KVM: x86/mmu: Skip invalid pages during zapping iff root_count is zero
Do not skip invalid shadow pages when zapping obsolete pages if the
pages' root_count has reached zero, in which case the page can be
immediately zapped and freed.
Update the comment accordingly.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86/mmu: Explicitly track only a single invalid mmu generation
Toggle mmu_valid_gen between '0' and '1' instead of blindly incrementing
the generation. Because slots_lock is held for the entire duration of
zapping obsolete pages, it's impossible for there to be multiple invalid
generations associated with shadow pages at any given time.
Toggling between the two generations (valid vs. invalid) allows changing
mmu_valid_gen from an unsigned long to a u8, which reduces the size of
struct kvm_mmu_page from 160 to 152 bytes on 64-bit KVM, i.e. reduces
KVM's memory footprint by 8 bytes per shadow page.
Set sp->mmu_valid_gen before it is added to active_mmu_pages.
Functionally this has no effect as kvm_mmu_alloc_page() has a single
caller that sets sp->mmu_valid_gen soon thereafter, but visually it is
jarring to see a shadow page being added to the list without its
mmu_valid_gen first being set.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Now that the fast invalidate mechanism has been reintroduced, restore
the performance tweaks for fast invalidation that existed prior to its
removal.
Paraphrasing the original changelog (commit 5ff0568374ed2 was itself a
partial revert):
Don't force reloading the remote mmu when zapping an obsolete page, as
a MMU_RELOAD request has already been issued by kvm_mmu_zap_all_fast()
immediately after incrementing mmu_valid_gen, i.e. after marking pages
obsolete.
Now that the fast invalidate mechanism has been reintroduced, restore
the performance tweaks for fast invalidation that existed prior to its
removal.
Paraphrashing the original changelog:
Introduce a per-VM list to track obsolete shadow pages, i.e. pages
which have been deleted from the mmu cache but haven't yet been freed.
When page reclaiming is needed, zap/free the deleted pages first.
KVM: x86/mmu: Revert "Revert "KVM: MMU: collapse TLB flushes when zap all pages""
Now that the fast invalidate mechanism has been reintroduced, restore
the performance tweaks for fast invalidation that existed prior to its
removal.
Paraphrashing the original changelog:
Reload the mmu on all vCPUs after updating the generation number so
that obsolete pages are not used by any vCPUs. This allows collapsing
all TLB flushes during obsolete page zapping into a single flush, as
there is no need to flush when dropping mmu_lock (to reschedule).
Note: a remote TLB flush is still needed before freeing the pages as
other vCPUs may be doing a lockless shadow page walk.
Opportunstically improve the comments restored by the revert (the
code itself is a true revert).
KVM: x86/mmu: Revert "Revert "KVM: MMU: zap pages in batch""
Now that the fast invalidate mechanism has been reintroduced, restore
the performance tweaks for fast invalidation that existed prior to its
removal.
Paraphrashing the original changelog:
Zap at least 10 shadow pages before releasing mmu_lock to reduce the
overhead associated with re-acquiring the lock.
Note: "10" is an arbitrary number, speculated to be high enough so
that a vCPU isn't stuck zapping obsolete pages for an extended period,
but small enough so that other vCPUs aren't starved waiting for
mmu_lock.
KVM: x86/mmu: Use fast invalidate mechanism to zap MMIO sptes
Use the fast invalidate mechasim to zap MMIO sptes on a MMIO generation
wrap. The fast invalidate flow was reintroduced to fix a livelock bug
in kvm_mmu_zap_all() that can occur if kvm_mmu_zap_all() is invoked when
the guest has live vCPUs. I.e. using kvm_mmu_zap_all() to handle the
MMIO generation wrap is theoretically susceptible to the livelock bug.
This effectively reverts commit 4771450c345dc ("Revert "KVM: MMU: drop
kvm_mmu_zap_mmio_sptes""), i.e. restores the behavior of commit a8eca9dcc656a ("KVM: MMU: drop kvm_mmu_zap_mmio_sptes").
Note, this actually fixes commit 571c5af06e303 ("KVM: x86/mmu:
Voluntarily reschedule as needed when zapping MMIO sptes"), but there
is no need to incrementally revert back to using fast invalidate, e.g.
doing so doesn't provide any bisection or stability benefits.
Fixes: 571c5af06e303 ("KVM: x86/mmu: Voluntarily reschedule as needed when zapping MMIO sptes") Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86/mmu: Treat invalid shadow pages as obsolete
Treat invalid shadow pages as obsolete to fix a bug where an obsolete
and invalid page with a non-zero root count could become non-obsolete
due to mmu_valid_gen wrapping. The bug is largely theoretical with the
current code base, as an unsigned long will effectively never wrap on
64-bit KVM, and userspace would have to deliberately stall a vCPU in
order to keep an obsolete invalid page on the active list while
simultaneously modifying memslots billions of times to trigger a wrap.
The obvious alternative is to use a 64-bit value for mmu_valid_gen,
but it's actually desirable to go in the opposite direction, i.e. using
a smaller 8-bit value to reduce KVM's memory footprint by 8 bytes per
shadow page, and relying on proper treatment of invalid pages instead of
preventing the generation from wrapping.
Note, "Fixes" points at a commit that was at one point reverted, but has
since been restored.
Fixes: 5304b8d37c2a5 ("KVM: MMU: fast invalidate all pages") Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tao Xu [Tue, 16 Jul 2019 06:55:51 +0000 (14:55 +0800)]
KVM: vmx: Introduce handle_unexpected_vmexit and handle WAITPKG vmexit
As the latest Intel 64 and IA-32 Architectures Software Developer's
Manual, UMWAIT and TPAUSE instructions cause a VM exit if the
RDTSC exiting and enable user wait and pause VM-execution
controls are both 1.
Because KVM never enable RDTSC exiting, the vm-exit for UMWAIT and TPAUSE
should never happen. Considering EXIT_REASON_XSAVES and
EXIT_REASON_XRSTORS is also unexpected VM-exit for KVM. Introduce a common
exit helper handle_unexpected_vmexit() to handle these unexpected VM-exit.
Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com> Co-developed-by: Jingqi Liu <jingqi.liu@intel.com> Signed-off-by: Jingqi Liu <jingqi.liu@intel.com> Signed-off-by: Tao Xu <tao3.xu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tao Xu [Tue, 16 Jul 2019 06:55:50 +0000 (14:55 +0800)]
KVM: vmx: Emulate MSR IA32_UMWAIT_CONTROL
UMWAIT and TPAUSE instructions use 32bit IA32_UMWAIT_CONTROL at MSR index
E1H to determines the maximum time in TSC-quanta that the processor can
reside in either C0.1 or C0.2.
This patch emulates MSR IA32_UMWAIT_CONTROL in guest and differentiate
IA32_UMWAIT_CONTROL between host and guest. The variable
mwait_control_cached in arch/x86/kernel/cpu/umwait.c caches the MSR value,
so this patch uses it to avoid frequently rdmsr of IA32_UMWAIT_CONTROL.
Co-developed-by: Jingqi Liu <jingqi.liu@intel.com> Signed-off-by: Jingqi Liu <jingqi.liu@intel.com> Signed-off-by: Tao Xu <tao3.xu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tao Xu [Tue, 16 Jul 2019 06:55:49 +0000 (14:55 +0800)]
KVM: x86: Add support for user wait instructions
UMONITOR, UMWAIT and TPAUSE are a set of user wait instructions.
This patch adds support for user wait instructions in KVM. Availability
of the user wait instructions is indicated by the presence of the CPUID
feature flag WAITPKG CPUID.0x07.0x0:ECX[5]. User wait instructions may
be executed at any privilege level, and use 32bit IA32_UMWAIT_CONTROL MSR
to set the maximum time.
The behavior of user wait instructions in VMX non-root operation is
determined first by the setting of the "enable user wait and pause"
secondary processor-based VM-execution control bit 26.
If the VM-execution control is 0, UMONITOR/UMWAIT/TPAUSE cause
an invalid-opcode exception (#UD).
If the VM-execution control is 1, treatment is based on the
setting of the “RDTSC exiting†VM-execution control. Because KVM never
enables RDTSC exiting, if the instruction causes a delay, the amount of
time delayed is called here the physical delay. The physical delay is
first computed by determining the virtual delay. If
IA32_UMWAIT_CONTROL[31:2] is zero, the virtual delay is the value in
EDX:EAX minus the value that RDTSC would return; if
IA32_UMWAIT_CONTROL[31:2] is not zero, the virtual delay is the minimum
of that difference and AND(IA32_UMWAIT_CONTROL,FFFFFFFCH).
Because umwait and tpause can put a (psysical) CPU into a power saving
state, by default we dont't expose it to kvm and enable it only when
guest CPUID has it.
Detailed information about user wait instructions can be found in the
latest Intel 64 and IA-32 Architectures Software Developer's Manual.
Co-developed-by: Jingqi Liu <jingqi.liu@intel.com> Signed-off-by: Jingqi Liu <jingqi.liu@intel.com> Signed-off-by: Tao Xu <tao3.xu@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Add comments to document various emulation types
Document the intended usage of each emulation type as each exists to
handle an edge case of one kind or another and can be easily
misinterpreted at first glance.
Cc: Liran Alon <liran.alon@oracle.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: VMX: Handle single-step #DB for EMULTYPE_SKIP on EPT misconfig
VMX's EPT misconfig flow to handle fast-MMIO path falls back to decoding
the instruction to determine the instruction length when running as a
guest (Hyper-V doesn't fill VMCS.VM_EXIT_INSTRUCTION_LEN because it's
technically not defined for EPT misconfigs). Rather than implement the
slow skip in VMX's generic skip_emulated_instruction(),
handle_ept_misconfig() directly calls kvm_emulate_instruction() with
EMULTYPE_SKIP, which intentionally doesn't do single-step detection, and
so handle_ept_misconfig() misses a single-step #DB.
Rework the EPT misconfig fallback case to route it through
kvm_skip_emulated_instruction() so that single-step #DBs and interrupt
shadow updates are handled automatically. I.e. make VMX's slow skip
logic match SVM's and have the SVM flow not intentionally avoid the
shadow update.
Alternatively, the handle_ept_misconfig() could manually handle single-
step detection, but that results in EMULTYPE_SKIP having split logic for
the interrupt shadow vs. single-step #DBs, and split emulator logic is
largely what led to this mess in the first place.
Modifying SVM to mirror VMX flow isn't really an option as SVM's case
isn't limited to a specific exit reason, i.e. handling the slow skip in
skip_emulated_instruction() is mandatory for all intents and purposes.
Drop VMX's skip_emulated_instruction() wrapper since it can now fail,
and instead WARN if it fails unexpectedly, e.g. if exit_reason somehow
becomes corrupted.
Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Fixes: d391f12070672 ("x86/kvm/vmx: do not use vm-exit instruction length for fast MMIO when running nested") Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Deferring emulation failure handling (in some cases) to the caller of
x86_emulate_instruction() has proven fragile, e.g. multiple instances of
KVM not setting run->exit_reason on EMULATE_FAIL, largely due to it
being difficult to discern what emulation types can return what result,
and which combination of types and results are handled where.
Now that x86_emulate_instruction() always handles emulation failure,
i.e. EMULATION_FAIL is only referenced in callers, remove the
emulation_result enums entirely. Per KVM's existing exit handling
conventions, return '0' and '1' for "exit to userspace" and "resume
guest" respectively. Doing so cleans up many callers, e.g. they can
return kvm_emulate_instruction() directly instead of having to interpret
its result.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: VMX: Remove EMULATE_FAIL handling in handle_invalid_guest_state()
Now that EMULATE_FAIL is completely unused, remove the last remaning
usage where KVM does something functional in response to EMULATE_FAIL.
Leave the check in place as a WARN_ON_ONCE to provide a better paper
trail when EMULATE_{DONE,FAIL,USER_EXIT} are completely removed.
Opportunistically remove the gotos in handle_invalid_guest_state().
With the EMULATE_FAIL handling gone there is no need to have a common
handler for emulation failure and the gotos only complicate things,
e.g. the signal_pending() check always returns '1', but this is far
from obvious when glancing through the code.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Move triple fault request into RM int injection
Request triple fault in kvm_inject_realmode_interrupt() instead of
returning EMULATE_FAIL and deferring to the caller. All existing
callers request triple fault and it's highly unlikely Real Mode is
going to acquire new features. While this consolidates a small amount
of code, the real goal is to remove the last reference to EMULATE_FAIL.
No functional change intended.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Handle emulation failure directly in kvm_task_switch()
Consolidate the reporting of emulation failure into kvm_task_switch()
so that it can return EMULATE_USER_EXIT. This helps pave the way for
removing EMULATE_FAIL altogether.
This also fixes a theoretical bug where task switch interception could
suppress an EMULATE_USER_EXIT return.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Exit to userspace on emulation skip failure
Kill a few birds with one stone by forcing an exit to userspace on skip
emulation failure. This removes a reference to EMULATE_FAIL, fixes a
bug in handle_ept_misconfig() where it would exit to userspace without
setting run->exit_reason, and fixes a theoretical bug in SVM's
task_switch_interception() where it would overwrite run->exit_reason on
a return of EMULATE_USER_EXIT.
Note, this technically doesn't fully fix task_switch_interception()
as it now incorrectly handles EMULATE_FAIL, but in practice there is no
bug as EMULATE_FAIL will never be returned for EMULTYPE_SKIP.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Move #UD injection for failed emulation into emulation code
Immediately inject a #UD and return EMULATE done if emulation fails when
handling an intercepted #UD. This helps pave the way for removing
EMULATE_FAIL altogether.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Add explicit flag for forced emulation on #UD
Add an explicit emulation type for forced #UD emulation and use it to
detect that KVM should unconditionally inject a #UD instead of falling
into its standard emulation failure handling.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Move #GP injection for VMware into x86_emulate_instruction()
Immediately inject a #GP when VMware emulation fails and return
EMULATE_DONE instead of propagating EMULATE_FAIL up the stack. This
helps pave the way for removing EMULATE_FAIL altogether.
Rename EMULTYPE_VMWARE to EMULTYPE_VMWARE_GP to document that the x86
emulator is called to handle VMware #GP interception, e.g. why a #GP
is injected on emulation failure for EMULTYPE_VMWARE_GP.
Drop EMULTYPE_NO_UD_ON_FAIL as a standalone type. The "no #UD on fail"
is used only in the VMWare case and is obsoleted by having the emulator
itself reinject #GP.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Reviewed-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Don't attempt VMWare emulation on #GP with non-zero error code
The VMware backdoor hooks #GP faults on IN{S}, OUT{S}, and RDPMC, none
of which generate a non-zero error code for their #GP. Re-injecting #GP
instead of attempting emulation on a non-zero error code will allow a
future patch to move #GP injection (for emulation failure) into
kvm_emulate_instruction() without having to plumb in the error code.
Reviewed-and-tested-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: Refactor kvm_vcpu_do_singlestep() to remove out param
Return the single-step emulation result directly instead of via an out
param. Presumably at some point in the past kvm_vcpu_do_singlestep()
could be called with *r==EMULATE_USER_EXIT, but that is no longer the
case, i.e. all callers are happy to overwrite their own return variable.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
When handling emulation failure, return the emulation result directly
instead of capturing it in a local variable. Future patches will move
additional cases into handle_emulation_failure(), clean up the cruft
before so there isn't an ugly mix of setting a local variable and
returning directly.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Move the stat.mmio_exits update into x86_emulate_instruction(). This is
both a bug fix, e.g. the current update flows will incorrectly increment
mmio_exits on emulation failure, and a preparatory change to set the
stage for eliminating EMULATE_DONE and company.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Krish Sadhukhan [Fri, 9 Aug 2019 19:26:19 +0000 (12:26 -0700)]
KVM: nVMX: Check Host Address Space Size on vmentry of nested guests
According to section "Checks Related to Address-Space Size" in Intel SDM
vol 3C, the following checks are performed on vmentry of nested guests:
If the logical processor is outside IA-32e mode (if IA32_EFER.LMA = 0)
at the time of VM entry, the following must hold:
- The "IA-32e mode guest" VM-entry control is 0.
- The "host address-space size" VM-exit control is 0.
If the logical processor is in IA-32e mode (if IA32_EFER.LMA = 1) at the
time of VM entry, the "host address-space size" VM-exit control must be 1.
If the "host address-space size" VM-exit control is 0, the following must
hold:
- The "IA-32e mode guest" VM-entry control is 0.
- Bit 17 of the CR4 field (corresponding to CR4.PCIDE) is 0.
- Bits 63:32 in the RIP field are 0.
If the "host address-space size" VM-exit control is 1, the following must
hold:
- Bit 5 of the CR4 field (corresponding to CR4.PAE) is 1.
- The RIP field contains a canonical address.
On processors that do not support Intel 64 architecture, checks are
performed to ensure that the "IA-32e mode guest" VM-entry control and the
"host address-space size" VM-exit control are both 0.
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com> Reviewed-by: Karl Heubaum <karl.heubaum@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: x86: hyper-v: set NoNonArchitecturalCoreSharing CPUID bit when SMT is impossible
Hyper-V 2019 doesn't expose MD_CLEAR CPUID bit to guests when it cannot
guarantee that two virtual processors won't end up running on sibling SMT
threads without knowing about it. This is done as an optimization as in
this case there is nothing the guest can do to protect itself against MDS
and issuing additional flush requests is just pointless. On bare metal the
topology is known, however, when Hyper-V is running nested (e.g. on top of
KVM) it needs an additional piece of information: a confirmation that the
exposed topology (wrt vCPU placement on different SMT threads) is
trustworthy.
NoNonArchitecturalCoreSharing (CPUID 0x40000004 EAX bit 18) is described in
TLFS as follows: "Indicates that a virtual processor will never share a
physical core with another virtual processor, except for virtual processors
that are reported as sibling SMT threads." From KVM we can give such
guarantee in two cases:
- SMT is unsupported or forcefully disabled (just 'disabled' doesn't work
as it can become re-enabled during the lifetime of the guest).
- vCPUs are properly pinned so the scheduler won't put them on sibling
SMT threads (when they're not reported as such).
This patch reports NoNonArchitecturalCoreSharing bit in to userspace in the
first case. The second case is outside of KVM's domain of responsibility
(as vCPU pinning is actually done by someone who manages KVM's userspace -
e.g. libvirt pinning QEMU threads).
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM needs to know if SMT is theoretically possible, this means it is
supported and not forcefully disabled ('nosmt=force'). Create and
export cpu_smt_possible() answering this question.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Wanpeng Li [Mon, 16 Sep 2019 07:42:32 +0000 (15:42 +0800)]
KVM: hyperv: Fix Direct Synthetic timers assert an interrupt w/o lapic_in_kernel
Reported by syzkaller:
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
RIP: 0010:__apic_accept_irq+0x46/0x740 arch/x86/kvm/lapic.c:1029
Call Trace:
kvm_apic_set_irq+0xb4/0x140 arch/x86/kvm/lapic.c:558
stimer_notify_direct arch/x86/kvm/hyperv.c:648 [inline]
stimer_expiration arch/x86/kvm/hyperv.c:659 [inline]
kvm_hv_process_stimers+0x594/0x1650 arch/x86/kvm/hyperv.c:686
vcpu_enter_guest+0x2b2a/0x54b0 arch/x86/kvm/x86.c:7896
vcpu_run+0x393/0xd40 arch/x86/kvm/x86.c:8152
kvm_arch_vcpu_ioctl_run+0x636/0x900 arch/x86/kvm/x86.c:8360
kvm_vcpu_ioctl+0x6cf/0xaf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2765
The testcase programs HV_X64_MSR_STIMERn_CONFIG/HV_X64_MSR_STIMERn_COUNT,
in addition, there is no lapic in the kernel, the counters value are small
enough in order that kvm_hv_process_stimers() inject this already-expired
timer interrupt into the guest through lapic in the kernel which triggers
the NULL deferencing. This patch fixes it by don't advertise direct mode
synthetic timers and discarding the inject when lapic is not in kernel.
KVM: x86: Manually flush collapsible SPTEs only when toggling flags
Zapping collapsible sptes, a.k.a. 4k sptes that can be promoted into a
large page, is only necessary when changing only the dirty logging flag
of a memory region. If the memslot is also being moved, then all sptes
for the memslot are zapped when it is invalidated. When a memslot is
being created, it is impossible for there to be existing dirty mappings,
e.g. KVM can have MMIO sptes, but not present, and thus dirty, sptes.
Note, the comment and logic are shamelessly borrowed from MIPS's version
of kvm_arch_commit_memory_region().
Fixes: 3ea3b7fa9af06 ("kvm: mmu: lazy collapse small sptes into large sptes") Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Remove the duplication code in run_test() of dirty_log_test because
after some reordering of functions now we can directly use the outcome
of vm_create().
Meanwhile, with the new VM_MODE_PXXV48_4K, we can safely revert b442324b58 too where we stick the x86_64 PA width to 39 bits for
dirty_log_test.
Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Peter Xu [Fri, 30 Aug 2019 01:36:18 +0000 (09:36 +0800)]
KVM: selftests: Introduce VM_MODE_PXXV48_4K
The naming VM_MODE_P52V48_4K is explicit but unclear when used on
x86_64 machines, because x86_64 machines are having various physical
address width rather than some static values. Here's some examples:
All of them are using 48 bits linear address width but with totally
different physical address width (and most of the old machines should
be less than 52 bits).
Let's create a new guest mode called VM_MODE_PXXV48_4K for current
x86_64 tests and make it as the default to replace the old naming of
VM_MODE_P52V48_4K because it shows more clearly that the PA width is
not really a constant. Meanwhile we also stop assuming all the x86
machines are having 52 bits PA width but instead we fetch the real
vm->pa_bits from CPUID 0x80000008 during runtime.
We currently make this exclusively used by x86_64 but no other arch.
As a slight touch up, moving DEBUG macro from dirty_log_test.c to
kvm_util.h so lib can use it too.
Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Peter Xu [Fri, 30 Aug 2019 01:36:17 +0000 (09:36 +0800)]
KVM: selftests: Create VM earlier for dirty log test
Since we've just removed the dependency of vm type in previous patch,
now we can create the vm much earlier. Note that to move it earlier
we used an approximation of number of extra pages but it should be
fine.
This prepares for the follow up patches to finally remove the
duplication of guest mode parsings.
Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Peter Xu [Fri, 30 Aug 2019 01:36:16 +0000 (09:36 +0800)]
KVM: selftests: Move vm type into _vm_create() internally
Rather than passing the vm type from the top level to the end of vm
creation, let's simply keep that as an internal of kvm_vm struct and
decide the type in _vm_create(). Several reasons for doing this:
- The vm type is only decided by physical address width and currently
only used in aarch64, so we've got enough information as long as
we're passing vm_guest_mode into _vm_create(),
- This removes a loop dependency between the vm->type and creation of
vms. That's why now we need to parse vm_guest_mode twice sometimes,
once in run_test() and then again in _vm_create(). The follow up
patches will move on to clean up that as well so we can have a
single place to decide guest machine types and so.
Note that this patch will slightly change the behavior of aarch64
tests in that previously most vm_create() callers will directly pass
in type==0 into _vm_create() but now the type will depend on
vm_guest_mode, however it shouldn't affect any user because all
vm_create() users of aarch64 will be using VM_MODE_DEFAULT guest
mode (which is VM_MODE_P40V48_4K) so at last type will still be zero.
Reviewed-by: Andrew Jones <drjones@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Vitaly Kuznetsov [Wed, 28 Aug 2019 07:59:05 +0000 (09:59 +0200)]
KVM: x86: announce KVM_CAP_HYPERV_ENLIGHTENED_VMCS support only when it is available
It was discovered that after commit 65efa61dc0d5 ("selftests: kvm: provide
common function to enable eVMCS") hyperv_cpuid selftest is failing on AMD.
The reason is that the commit changed _vcpu_ioctl() to vcpu_ioctl() in the
test and this one can't fail.
Instead of fixing the test is seems to make more sense to not announce
KVM_CAP_HYPERV_ENLIGHTENED_VMCS support if it is definitely missing
(on svm and in case kvm_intel.nested=0).
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Since commit 5158917c7b019 ("KVM: x86: nVMX: Allow nested_enable_evmcs to
be NULL") the code in x86.c is prepared to see nested_enable_evmcs being
NULL and in VMX case it actually is when nesting is disabled. Remove the
unneeded stub from SVM code.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Jim Mattson <jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Vitaly Kuznetsov [Thu, 22 Aug 2019 14:30:21 +0000 (22:30 +0800)]
KVM/Hyper-V/VMX: Add direct tlb flush support
Hyper-V provides direct tlb flush function which helps
L1 Hypervisor to handle Hyper-V tlb flush request from
L2 guest. Add the function support for VMX.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tianyu Lan [Thu, 22 Aug 2019 14:30:20 +0000 (22:30 +0800)]
KVM/Hyper-V: Add new KVM capability KVM_CAP_HYPERV_DIRECT_TLBFLUSH
Hyper-V direct tlb flush function should be enabled for
guest that only uses Hyper-V hypercall. User space
hypervisor(e.g, Qemu) can disable KVM identification in
CPUID and just exposes Hyper-V identification to make
sure the precondition. Add new KVM capability KVM_CAP_
HYPERV_DIRECT_TLBFLUSH for user space to enable Hyper-V
direct tlb function and this function is default to be
disabled in KVM.
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tianyu Lan [Thu, 22 Aug 2019 14:30:19 +0000 (22:30 +0800)]
x86/Hyper-V: Fix definition of struct hv_vp_assist_page
The struct hv_vp_assist_page was defined incorrectly.
The "vtl_control" should be u64[3], "nested_enlightenments
_control" should be a u64 and there are 7 reserved bytes
following "enlighten_vmentry". Fix the definition.
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Jim Mattson [Wed, 21 Aug 2019 18:20:04 +0000 (11:20 -0700)]
kvm: x86: Add Intel PMU MSRs to msrs_to_save[]
These MSRs should be enumerated by KVM_GET_MSR_INDEX_LIST, so that
userspace knows that these MSRs may be part of the vCPU state.
Signed-off-by: Jim Mattson <jmattson@google.com> Reviewed-by: Eric Hankland <ehankland@google.com> Reviewed-by: Peter Shier <pshier@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Merge tag 'mfd-next-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"New Drivers:
- Add support for Merrifield Basin Cove PMIC
New Device Support:
- Add support for Intel Tiger Lake to Intel LPSS PCI
- Add support for Intel Sky Lake to Intel LPSS PCI
- Add support for ST-Ericsson DB8520 to DB8500 PRCMU
New Functionality:
- Add RTC and PWRC support to MT6323
Bug Fixes:
- Clean-up resources; max77620
- Prevent input events being dropped on resume; intel-lpss-pci
- Prevent sleeping in IRQ context; ezx-pcap"
* tag 'mfd-next-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (48 commits)
mfd: mt6323: Add MT6323 RTC and PWRC
mfd: mt6323: Replace boilerplate resource code with DEFINE_RES_* macros
mfd: mt6397: Add mutex include
dt-bindings: mfd: mediatek: Add MT6323 Power Controller
dt-bindings: mfd: mediatek: Update RTC to include MT6323
dt-bindings: mfd: mediatek: mt6397: Change to relative paths
mfd: db8500-prcmu: Support the higher DB8520 ARMSS
mfd: intel-lpss: Use MODULE_SOFTDEP() instead of implicit request
mfd: htc-i2cpld: Drop check because i2c_unregister_device() is NULL safe
mfd: sm501: Include the GPIO driver header
mfd: intel-lpss: Add Intel Skylake ACPI IDs
mfd: intel-lpss: Consistently use GENMASK()
mfd: Add support for Merrifield Basin Cove PMIC
mfd: ezx-pcap: Replace mutex_lock with spin_lock
mfd: asic3: Include the right header
MAINTAINERS: altera-sysmgr: Fix typo in a filepath
mfd: mt6397: Extract IRQ related code from core driver
mfd: mt6397: Rename macros to something more readable
mfd: Remove dev_err() usage after platform_get_irq()
mfd: db8500-prcmu: Mark expected switch fall-throughs
...
Merge tag 'backlight-next-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Core Frameworks
- Obtain scale type through sysfs
New Functionality:
- Provide Device Tree functionality in rave-sp-backlight
- Calculate if scale type is (non-)linear in pwm_bl
Fix-ups:
- Simplify code in lm3630a_bl
- Trivial rename/whitespace/typo fixes in lms283gf05
- Remove superfluous NULL check in tosa_lcd
- Fix power state initialisation in gpio_backlight
- List supported file in MAINTAINERS
Bug Fixes:
- Kconfig - default to not building unless requested in
{LED,BACKLIGHT}_CLASS_DEVICE"
* tag 'backlight-next-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: pwm_bl: Set scale type for brightness curves specified in the DT
backlight: pwm_bl: Set scale type for CIE 1931 curves
backlight: Expose brightness curve type through sysfs
MAINTAINERS: Add entry for stable backlight sysfs ABI documentation
backlight: gpio-backlight: Correct initial power state handling
video: backlight: tosa_lcd: drop check because i2c_unregister_device() is NULL safe
video: backlight: Drop default m for {LCD,BACKLIGHT_CLASS_DEVICE}
backlight: lms283gf05: Fix a typo in the description passed to 'devm_gpio_request_one()'
backlight: lm3630a: Switch to use fwnode_property_count_uXX()
backlight: rave-sp: Leave initial state and register with correct device
Merge tag 'smack-for-5.4-rc1' of git://github.com/cschaufler/smack-next
Pull smack updates from Casey Schaufler:
"Four patches for v5.4. Nothing is major.
All but one are in response to mechanically detected potential issues.
The remaining patch cleans up kernel-doc notations"
* tag 'smack-for-5.4-rc1' of git://github.com/cschaufler/smack-next:
smack: use GFP_NOFS while holding inode_smack::smk_lock
security: smack: Fix possible null-pointer dereferences in smack_socket_sock_rcv_skb()
smack: fix some kernel-doc notations
Smack: Don't ignore other bprm->unsafe flags if LSM_UNSAFE_PTRACE is set
- Mark Layerscape endpoint BARs 2 and 4 as 64-bit (Xiaowei Bao)
- Add CONFIG_PCI_LAYERSCAPE_EP so EP/RC can be built separately (Xiaowei
Bao)
* remotes/lorenzo/pci/layerscape:
PCI: layerscape: Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately
PCI: layerscape: Add the bar_fixed_64bit property to the endpoint driver
- Fix Hyper-V use-after-free in pci_dev removal (Dexuan Cui)
- Fix Hyper-V build error in non-sysfs config (Randy Dunlap)
- Reallocate to avoid Hyper-V domain number collisions (Haiyang Zhang)
- Use Hyper-V instance ID bytes 4-5 to reduce domain collisions (Haiyang
Zhang)
* remotes/lorenzo/pci/hv:
PCI: hv: Use bytes 4 and 5 from instance ID as the PCI domain numbers
PCI: hv: Detect and fix Hyper-V PCI domain number collision
PCI: pci-hyperv: Fix build errors on non-SYSFS config
PCI: hv: Avoid use of hv_pci_dev->pci_slot after freeing it
- Make kirin_dw_pcie_ops constant (Nishka Dasgupta)
- Make DesignWare "num-lanes" property optional and remove from relevant
DTs (Hou Zhiqiang)
* remotes/lorenzo/pci/dwc:
arm64: dts: fsl: Remove num-lanes property from PCIe nodes
ARM: dts: ls1021a: Remove num-lanes property from PCIe nodes
PCI: dwc: Return directly when num-lanes is not found
dt-bindings: PCI: designware: Remove the num-lanes from Required properties
PCI: kirin: Make structure kirin_dw_pcie_ops constant
- Convert pci_resource_to_user() to a weak function to remove
HAVE_ARCH_PCI_RESOURCE_TO_USER #defines (Denis Efremov)
- Use PCI_SRIOV_NUM_BARS for idiomatic loop structure (Denis Efremov)
- Fix Resizable BAR size suspend/restore for 1MB BARs (Sumit Saxena)
- Correct "pci=resource_alignment" example in documentation (Alexey
Kardashevskiy)
* pci/resource:
PCI: Correct pci=resource_alignment parameter example
PCI: Restore Resizable BAR size bits correctly for 1MB BARs
PCI: Use PCI_SRIOV_NUM_BARS in loops instead of PCI_IOV_RESOURCE_END
PCI: Convert pci_resource_to_user() to a weak function
- Cleanup pciehp LED/indicator control with a new consolidated
pciehp_set_indicators() interface that controls both Attention and
Power Indicators (Denis Efremov)
* pci/pciehp:
PCI: pciehp: Refer to "Indicators" instead of "LEDs" in comments
PCI: pciehp: Remove pciehp_green_led_{on,off,blink}()
PCI: pciehp: Remove pciehp_set_attention_status()
PCI: pciehp: Combine adjacent indicator updates
PCI: pciehp: Add pciehp_set_indicators() to set both indicators
- Use devm_add_action_or_reset() helper (Fuqian Huang)
- Mark expected switch fall-through (Gustavo A. R. Silva)
- Convert sysfs device attributes from __ATTR() to DEVICE_ATTR() (Kelsey
Skunberg)
- Convert sysfs file permissions from S_IRUSR etc to octal (Kelsey
Skunberg)
- Move SR-IOV sysfs functions to iov.c (Kelsey Skunberg)
- Add pci_info_ratelimited() to ratelimit PCI messages separately
(Krzysztof Wilczynski)
- Fix "'static' not at beginning of declaration" warnings (Krzysztof
Wilczynski)
- Clean up resource_alignment parameter to not require static buffer
(Logan Gunthorpe)
- Add ACS quirk for iProc PAXB (Abhinav Ratna)
- Add pci_irq_vector() and other stubs for !CONFIG_PCI (Herbert Xu)
* pci/misc:
PCI: Add pci_irq_vector() and other stubs when !CONFIG_PCI
PCI: Add ACS quirk for iProc PAXB
PCI: Force trailing new line to resource_alignment_param in sysfs
PCI: Move pci_[get|set]_resource_alignment_param() into their callers
PCI: Clean up resource_alignment parameter to not require static buffer
PCI: Use static const struct, not const static struct
PCI: Add pci_info_ratelimited() to ratelimit PCI separately
PCI/IOV: Remove group write permission from sriov_numvfs, sriov_drivers_autoprobe
PCI/IOV: Move sysfs SR-IOV functions to iov.c
PCI: sysfs: Change permissions from symbolic to octal
PCI: sysfs: Change DEVICE_ATTR() to DEVICE_ATTR_WO()
PCI: sysfs: Define device attributes with DEVICE_ATTR*()
PCI: Mark expected switch fall-through
PCI: Use devm_add_action_or_reset()
- Consolidate _HPP & _HPX code in pci-acpi.h and remove unnecessary
struct hotplug_program_ops (Krzysztof Wilczynski)
- Fixup PCIe device types to remove the need for dev->has_secondary_link
(Mika Westerberg)
* pci/enumeration:
PCI: Get rid of dev->has_secondary_link flag
PCI: Make pcie_downstream_port() available outside of access.c
PCI/ACPI: Remove unnecessary struct hotplug_program_ops
PCI/ACPI: Move _HPP & _HPX functions to pci-acpi.c
PCI/ACPI: Rename _HPX structs from hpp_* to hpx_*
- Move many symbols from public linux/pci.h to subsystem-private
drivers/pci/pci.h (Kelsey Skunberg)
- Unexport pci_bus_get() and pci_bus_sem since they're not needed by
modules (Kelsey Skunberg)
- Remove unused pci_block_cfg_access() et al (Kelsey Skunberg)
* pci/encapsulate:
PCI: Make pci_set_of_node(), etc private
PCI: Make pci_enable_ptm() private
PCI: Make pcie_set_ecrc_checking(), pcie_ecrc_get_policy() private
PCI: Make pci_ats_init() private
PCI: Make pcie_update_link_speed() private
PCI: Make pci_bus_get(), pci_bus_put() private
PCI: Make pci_hotplug_io_size, mem_size, and bus_size private
PCI: Make pci_save_vc_state(), pci_restore_vc_state(), etc private
PCI: Make pci_get_host_bridge_device(), pci_put_host_bridge_device() private
PCI: Make pci_check_pme_status(), pci_pme_wakeup_bus() private
PCI: Make PCI_PM_* delay times private
PCI: Unexport pci_bus_sem
PCI: Unexport pci_bus_get() and pci_bus_put()
PCI: Remove pci_block_cfg_access() et al (unused)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID updates from Jiri Kosina:
- syzbot memory corruption fixes for hidraw, Prodikeys, Logitech and
Sony drivers from Alan Stern and Roderick Colenbrander
- stuck 'fn' key fix for hid-apple from Joao Moreno
- proper propagation of EPOLLOUT from hiddev and hidraw, from Fabian
Henneke
- fixes for handling power management for intel-ish devices with NO_D3
flag set, from Zhang Lixu
- extension of supported usage range for customer page, as some
Logitech devices are actually making use of it. From Olivier Gay.
- hid-multitouch is no longer filtering mice node creation, from
Benjamin Tissoires
- MobileStudio Pro 13 support, from Ping Cheng
- a few other device ID additions and assorted smaller fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (27 commits)
HID: core: fix dmesg flooding if report field larger than 32bit
HID: core: Add printk_once variants to hid_warn() etc
HID: core: reformat and reduce hid_printk macros
HID: prodikeys: Fix general protection fault during probe
HID: wacom: add new MobileStudio Pro 13 support
HID: sony: Fix memory corruption issue on cleanup.
HID: i2c-hid: modify quirks for weida's devices
HID: apple: Fix stuck function keys when using FN
HID: sb0540: add support for Creative SB0540 IR receivers
HID: Add quirk for HP X500 PIXART OEM mouse
HID: logitech-dj: Fix crash when initial logi_dj_recv_query_paired_devices fails
hid-logitech-dj: add the new Lightspeed receiver
HID: logitech-dj: add support of the G700(s) receiver
HID: multitouch: add support for the Smart Tech panel
HID: multitouch: do not filter mice nodes
HID: do not call hid_set_drvdata(hdev, NULL) in drivers
HID: wacom: do not call hid_set_drvdata(hdev, NULL)
HID: logitech: Fix general protection fault caused by Logitech driver
HID: hidraw: Fix invalid read in hidraw_ioctl
HID: wacom: support named keys on older devices
...
Merge tag 'safesetid-bugfix-5.4' of git://github.com/micah-morton/linux
Pull SafeSetID fix from Micah Morton:
"Jann Horn sent some patches to fix some bugs in SafeSetID for 5.3.
After he had done his testing there were a couple small code tweaks
that went in and caused this bug.
From what I can see SafeSetID is broken in 5.3 and crashes the kernel
every time during initialization if you try to use it. I came across
this bug when backporting Jann's changes for 5.3 to older kernels
(4.14 and 4.19). I've tested on a Chrome OS device with those kernels
and verified that this change fixes things.
It doesn't seem super useful to have this bake in linux-next, since it
is completely broken in 5.3 and nobody noticed"
* tag 'safesetid-bugfix-5.4' of git://github.com/micah-morton/linux:
LSM: SafeSetID: Stop releasing uninitialized ruleset
Merge tag 'selinux-pr-20190917' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux updates from Paul Moore:
- Add LSM hooks, and SELinux access control hooks, for dnotify,
fanotify, and inotify watches. This has been discussed with both the
LSM and fs/notify folks and everybody is good with these new hooks.
- The LSM stacking changes missed a few calls to current_security() in
the SELinux code; we fix those and remove current_security() for
good.
- Improve our network object labeling cache so that we always return
the object's label, even when under memory pressure. Previously we
would return an error if we couldn't allocate a new cache entry, now
we always return the label even if we can't create a new cache entry
for it.
- Convert the sidtab atomic_t counter to a normal u32 with
READ/WRITE_ONCE() and memory barrier protection.
- A few patches to policydb.c to clean things up (remove forward
declarations, long lines, bad variable names, etc)
* tag 'selinux-pr-20190917' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
lsm: remove current_security()
selinux: fix residual uses of current_security() for the SELinux blob
selinux: avoid atomic_t usage in sidtab
fanotify, inotify, dnotify, security: add security hook for fs notifications
selinux: always return a secid from the network caches if we find one
selinux: policydb - rename type_val_to_struct_array
selinux: policydb - fix some checkpatch.pl warnings
selinux: shuffle around policydb.c to get rid of forward declarations
Merge branch 'for-5.3/upstream-fixes' into for-linus
- syzbot memory corruption fixes for hidraw, Prodikeys, Logitech and Sony
drivers from Alan Stern and Roderick Colenbrander
- error handling fix for Logitech unifying receivers from Hans de Goede
Merge tag 'for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
"Core:
- Ensure HWMON devices are registered with valid names
- Fix device wakeup code
Drivers:
- bq25890_charger: Add BQ25895 support
- axp288_fuel_gauge: Add Minix Neo Z83-4 to blacklist
- sc27xx: improve battery calibration
- misc small fixes all over drivers"
* tag 'for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (24 commits)
power: supply: cpcap-charger: Enable vbus boost voltage
power: supply: sc27xx: Add POWER_SUPPLY_PROP_CALIBRATE attribute
power: supply: sc27xx: Optimize the battery capacity calibration
power: supply: sc27xx: Make sure the alarm capacity is larger than 0
power: supply: sc27xx: Fix the the accuracy issue of coulomb calculation
power: supply: sc27xx: Fix conditon to enable the FGU interrupt
power: supply: sc27xx: Add POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN attribute
power: supply: max77650: add MODULE_ALIAS()
power: supply: isp1704: remove redundant assignment to variable ret
power: supply: bq25890_charger: Add the BQ25895 part
power: supply: sc27xx: Replace devm_add_action() followed by failure action with devm_add_action_or_reset()
power: supply: sc27xx: Introduce local variable 'struct device *dev'
power: reset: reboot-mode: Fix author email format
power: supply: ab8500: remove set but not used variables 'vbup33_vrtcn' and 'bup_vch_range'
power: supply: max17042_battery: Fix a typo in function names
power: reset: gpio-restart: Fix typo when gpio reset is not found
power: supply: Init device wakeup after device_add()
power: supply: ab8500_charger: Mark expected switch fall-through
power: supply: sbs-battery: only return health when battery present
MAINTAINERS: N900: Remove isp1704_charger.h record
...
Merge tag 'hsi-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi
Pull HSI updates from Sebastian Reichel:
"Misc cleanups"
* tag 'hsi-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
HSI: Remove dev_err() usage after platform_get_irq()
HSI: ssi_protocol: Mark expected switch fall-throughs
firmware: bcm47xx_nvram: _really_ correct size_t printf format
Commit feb4eb060c3a ("firmware: bcm47xx_nvram: Correct size_t printf
format") was wrong, and changed a printout of 'header.len' - which is an
u32 type - to use '%zu'.
It apparently did pattern matching on the other case, where it printed
out 'nvram_len', which is indeed of type 'size_t'.
Rather than undoing the change, this just makes it use the variable that
the change seemed to expect to be used.
Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: Paul Burton <paul.burton@mips.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
modules: make MODULE_IMPORT_NS() work even when modular builds are disabled
It's an unusual configuration, and was apparently never tested, and not
caught in linux-next because of a combination of travels and it making
it into the tree too late.
The fix is to simply move the #define to outside the CONFIG_MODULE
section, since MODULE_INFO() will do the right thing.
Merge tag 'rtc-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"Two new drivers and the new pcf2127 feature make the bulk of the
additions. The rest are the usual fixes and new features.
Subsystem:
- add debug message when registration fails
New drivers:
- Amlogic Virtual Wake
- Freescale FlexTimer Module alarm
Drivers:
- remove superfluous error messages
- convert to i2c_new_dummy_device and devm_i2c_new_dummy_device
- Remove dev_err() usage after platform_get_irq()
- Set RTC range for: pcf2123, pcf8563, snvs.
- pcf2127: tamper detection and watchdog support
- pcf85363: fix regmap issue
- sun6i: H6 support
- remove w90x900/nuc900 driver"
* tag 'rtc-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (51 commits)
rtc: meson: mark PM functions as __maybe_unused
rtc: sc27xx: Remove clearing SPRD_RTC_POWEROFF_ALM_FLAG flag
dt-bindings: rtc: ds1307: add rx8130 compatible
rtc: sun6i: Allow using as wakeup source from suspend
rtc: pcf8563: let the core handle range offsetting
rtc: pcf8563: remove useless indirection
rtc: pcf8563: convert to devm_rtc_allocate_device
rtc: pcf8563: add Microcrystal RV8564 compatible
rtc: pcf8563: add Epson RTC8564 compatible
rtc: s35390a: convert to devm_i2c_new_dummy_device()
rtc: max77686: convert to devm_i2c_new_dummy_device()
rtc: pcf85363/pcf85263: fix regmap error in set_time
rtc: snvs: switch to rtc_time64_to_tm/rtc_tm_to_time64
rtc: snvs: set range
rtc: snvs: fix possible race condition
rtc: pcf2127: bugfix: watchdog build dependency
rtc: pcf2127: add tamper detection support
rtc: pcf2127: add watchdog feature support
rtc: pcf2127: bugfix: read rtc disables watchdog
rtc: pcf2127: cleanup register and bit defines
...
Merge tag 'rpmsg-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc
Pull rpmsg updates from Bjorn Andersson:
"This contains updates to make the rpmsg sample driver more useful,
fixes the naming of GLINK devices to avoid naming collisions and a few
minor bug fixes. It also updates MAINTAINERS to reflect the move to
kernel.org"
* tag 'rpmsg-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
rpmsg: glink-smem: Name the edge based on parent remoteproc
rpmsg: glink: Use struct_size() helper
rpmsg: virtio_rpmsg_bus: replace "%p" with "%pK"
MAINTAINERS: rpmsg: fix git tree location
rpmsg: core: fix comments
samples/rpmsg: Introduce a module parameter for message count
samples/rpmsg: Replace print_hex_dump() with print_hex_dump_debug()
Merge tag 'rproc-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc
Pull remoteproc updates from Bjorn Andersson:
"This exposes the remoteproc's name in sysfs, allows stm32 to enter
platform standby and provides bug fixes for stm32 and Qualcomm's modem
remoteproc drivers. Finally it updates MAINTAINERS to reflect the move
to kernel.org"
* tag 'rproc-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
MAINTAINERS: remoteproc: update git tree location
remoteproc: Remove dev_err() usage after platform_get_irq()
remoteproc: stm32: manage the get_irq probe defer case
remoteproc: stm32: clear MCU PDDS at firmware start
remoteproc: qcom: q6v5-mss: fixup q6v5_pds_enable error handling
remoteproc: Add a sysfs interface for name
remoteproc: qcom: Move glink_ssr notification after stop
Merge tag 'soundwire-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
"This includes DT support thanks to Srini and more work done by Intel
(Pierre) on improving cadence and intel support.
Summary:
- Add DT bindings and DT support in core
- Add debugfs support for soundwire properties
- Improvements on streaming handling to core
- Improved handling of Cadence module
- More updates and improvements to Intel driver"
* tag 'soundwire-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (30 commits)
soundwire: stream: make stream name a const pointer
soundwire: Add compute_params callback
soundwire: core: add device tree support for slave devices
dt-bindings: soundwire: add slave bindings
soundwire: bus: set initial value to port_status
soundwire: intel: handle disabled links
soundwire: intel: add debugfs register dump
soundwire: cadence_master: add debugfs register dump
soundwire: add debugfs support
soundwire: intel: remove unused variables
soundwire: intel: move shutdown() callback and don't export symbol
soundwire: cadence_master: add kernel parameter to override interrupt mask
soundwire: intel_init: add kernel module parameter to filter out links
soundwire: cadence_master: fix divider setting in clock register
soundwire: cadence_master: make use of mclk_freq property
soundwire: intel: read mclk_freq property from firmware
soundwire: add new mclk_freq field for properties
soundwire: stream: remove unnecessary variable initializations
soundwire: stream: fix disable sequence
soundwire: include mod_devicetable.h to avoid compiling warnings
...
Merge tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules updates from Jessica Yu:
"The main bulk of this pull request introduces a new exported symbol
namespaces feature. The number of exported symbols is increasingly
growing with each release (we're at about 31k exports as of 5.3-rc7)
and we currently have no way of visualizing how these symbols are
"clustered" or making sense of this huge export surface.
Namespacing exported symbols allows kernel developers to more
explicitly partition and categorize exported symbols, as well as more
easily limiting the availability of namespaced symbols to other parts
of the kernel. For starters, we have introduced the USB_STORAGE
namespace to demonstrate the API's usage. I have briefly summarized
the feature and its main motivations in the tag below.
Summary:
- Introduce exported symbol namespaces.
This new feature allows subsystem maintainers to partition and
categorize their exported symbols into explicit namespaces. Module
authors are now required to import the namespaces they need.
Some of the main motivations of this feature include: allowing
kernel developers to better manage the export surface, allow
subsystem maintainers to explicitly state that usage of some
exported symbols should only be limited to certain users (think:
inter-module or inter-driver symbols, debugging symbols, etc), as
well as more easily limiting the availability of namespaced symbols
to other parts of the kernel.
With the module import requirement, it is also easier to spot the
misuse of exported symbols during patch review.
Two new macros are introduced: EXPORT_SYMBOL_NS() and
EXPORT_SYMBOL_NS_GPL(). The API is thoroughly documented in
Documentation/kbuild/namespaces.rst.
- Some small code and kbuild cleanups here and there"
* tag 'modules-for-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: Remove leftover '#undef' from export header
module: remove unneeded casts in cmp_name()
module: move CONFIG_UNUSED_SYMBOLS to the sub-menu of MODULES
module: remove redundant 'depends on MODULES'
module: Fix link failure due to invalid relocation on namespace offset
usb-storage: export symbols in USB_STORAGE namespace
usb-storage: remove single-use define for debugging
docs: Add documentation for Symbol Namespaces
scripts: Coccinelle script for namespace dependencies.
modpost: add support for generating namespace dependencies
export: allow definition default namespaces in Makefiles or sources
module: add config option MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS
modpost: add support for symbol namespaces
module: add support for symbol namespaces.
export: explicitly align struct kernel_symbol
module: support reading multiple values per modinfo tag
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
- fix various clang build and cppcheck issues
- switch ARM to use new common outgoing-CPU-notification code
- add some additional explanation about the boot code
- kbuild "make clean" fixes
- get rid of another "(____ptrval____)", this time for the VDSO code
- avoid treating cache maintenance faults as a write
- add a frame pointer unwinder implementation for clang
- add EDAC support for Aurora L2 cache
- improve robustness of adjust_lowmem_bounds() finding the bounds of
lowmem.
- add reset control for AMBA primecell devices
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (24 commits)
ARM: 8906/1: drivers/amba: add reset control to amba bus probe
ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer
ARM: 8904/1: skip nomap memblocks while finding the lowmem/highmem boundary
ARM: 8903/1: ensure that usable memory in bank 0 starts from a PMD-aligned address
ARM: 8891/1: EDAC: armada_xp: Add support for more SoCs
ARM: 8888/1: EDAC: Add driver for the Marvell Armada XP SDRAM and L2 cache ECC
ARM: 8892/1: EDAC: Add missing debugfs_create_x32 wrapper
ARM: 8890/1: l2x0: add marvell,ecc-enable property for aurora
ARM: 8889/1: dt-bindings: document marvell,ecc-enable binding
ARM: 8886/1: l2x0: support parity-enable/disable on aurora
ARM: 8885/1: aurora-l2: add defines for parity and ECC registers
ARM: 8887/1: aurora-l2: add prefix to MAX_RANGE_SIZE
ARM: 8902/1: l2c: move cache-aurora-l2.h to asm/hardware
ARM: 8900/1: UNWINDER_FRAME_POINTER implementation for Clang
ARM: 8898/1: mm: Don't treat faults reported from cache maintenance as writes
ARM: 8896/1: VDSO: Don't leak kernel addresses
ARM: 8895/1: visit mach-* and plat-* directories when cleaning
ARM: 8894/1: boot: Replace open-coded nop with macro
ARM: 8893/1: boot: Explain the 8 nops
ARM: 8876/1: fix O= building with CONFIG_FPE_FASTFPE
...
Merge tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Paul Burton:
"Main MIPS changes:
- boot_mem_map is removed, providing a nice cleanup made possible by
the recent removal of bootmem.
- Some fixes to atomics, in general providing compiler barriers for
smp_mb__{before,after}_atomic plus fixes specific to Loongson CPUs
or MIPS32 systems using cmpxchg64().
- Conversion to the new generic VDSO infrastructure courtesy of
Vincenzo Frascino.
- Removal of undefined behavior in set_io_port_base(), fixing the
behavior of some MIPS kernel configurations when built with recent
clang versions.
- Initial MIPS32 huge page support, functional on at least Ingenic
SoCs.
- pte_special() is now supported for some configurations, allowing
among other things generic fast GUP to be used.
- Miscellaneous fixes & cleanups.
And platform specific changes:
- Major improvements to Ingenic SoC support from Paul Cercueil,
mostly enabled by the inclusion of the new TCU (timer-counter unit)
drivers he's spent a very patient year or so working on. Plus some
fixes for X1000 SoCs from Zhou Yanjie.
- Netgear R6200 v1 systems are now supported by the bcm47xx platform.
- DT updates for BMIPS, Lantiq & Microsemi Ocelot systems"
* tag 'mips_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (89 commits)
MIPS: Detect bad _PFN_SHIFT values
MIPS: Disable pte_special() for MIPS32 with RiXi
MIPS: ralink: deactivate PCI support for SOC_MT7621
mips: compat: vdso: Use legacy syscalls as fallback
MIPS: Drop Loongson _CACHE_* definitions
MIPS: tlbex: Remove cpu_has_local_ebase
MIPS: tlbex: Simplify r3k check
MIPS: Select R3k-style TLB in Kconfig
MIPS: PCI: refactor ioc3 special handling
mips: remove ioremap_cachable
mips/atomic: Fix smp_mb__{before,after}_atomic()
mips/atomic: Fix loongson_llsc_mb() wreckage
mips/atomic: Fix cmpxchg64 barriers
MIPS: Octeon: remove duplicated include from dma-octeon.c
firmware: bcm47xx_nvram: Allow COMPILE_TEST
firmware: bcm47xx_nvram: Correct size_t printf format
MIPS: Treat Loongson Extensions as ASEs
MIPS: Remove dev_err() usage after platform_get_irq()
MIPS: dts: mscc: describe the PTP ready interrupt
MIPS: dts: mscc: describe the PTP register range
...
Merge tag 'gfs2-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Use asynchronous glocks and timeouts to recover from deadlocks during
rename and exchange: the lock ordering constraints the vfs uses are
not sufficient to prevent deadlocks across multiple nodes.
- Add support for IOMAP_ZERO and use iomap_zero_range to replace gfs2
specific code.
- Various other minor fixes and cleanups.
* tag 'gfs2-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: clear buf_in_tr when ending a transaction in sweep_bh_for_rgrps
gfs2: Improve mmap write vs. truncate consistency
gfs2: Use async glocks for rename
gfs2: create function gfs2_glock_update_hold_time
gfs2: separate holder for rgrps in gfs2_rename
gfs2: Delete an unnecessary check before brelse()
gfs2: Minor PAGE_SIZE arithmetic cleanups
gfs2: Fix recovery slot bumping
gfs2: Fix possible fs name overflows
gfs2: untangle the logic in gfs2_drevalidate
gfs2: Always mark inode dirty in fallocate
gfs2: Minor gfs2_alloc_inode cleanup
gfs2: implement gfs2_block_zero_range using iomap_zero_range
gfs2: Add support for IOMAP_ZERO
gfs2: gfs2_iomap_begin cleanup
Merge tag 'f2fs-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, we introduced casefolding support in f2fs, and fixed
various bugs in individual features such as IO alignment,
checkpoint=disable, quota, and swapfile.
Enhancement:
- support casefolding w/ enhancement in ext4
- support fiemap for directory
- support FS_IO_GET|SET_FSLABEL
Bug fix:
- fix IO stuck during checkpoint=disable
- avoid infinite GC loop
- fix panic/overflow related to IO alignment feature
- fix livelock in swap file
- fix discard command leak
- disallow dio for atomic_write"
* tag 'f2fs-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (51 commits)
f2fs: add a condition to detect overflow in f2fs_ioc_gc_range()
f2fs: fix to add missing F2FS_IO_ALIGNED() condition
f2fs: fix to fallback to buffered IO in IO aligned mode
f2fs: fix to handle error path correctly in f2fs_map_blocks
f2fs: fix extent corrupotion during directIO in LFS mode
f2fs: check all the data segments against all node ones
f2fs: Add a small clarification to CONFIG_FS_F2FS_FS_SECURITY
f2fs: fix inode rwsem regression
f2fs: fix to avoid accessing uninitialized field of inode page in is_alive()
f2fs: avoid infinite GC loop due to stale atomic files
f2fs: Fix indefinite loop in f2fs_gc()
f2fs: convert inline_data in prior to i_size_write
f2fs: fix error path of f2fs_convert_inline_page()
f2fs: add missing documents of reserve_root/resuid/resgid
f2fs: fix flushing node pages when checkpoint is disabled
f2fs: enhance f2fs_is_checkpoint_ready()'s readability
f2fs: clean up __bio_alloc()'s parameter
f2fs: fix wrong error injection path in inc_valid_block_count()
f2fs: fix to writeout dirty inode during node flush
f2fs: optimize case-insensitive lookups
...
Merge tag 'for_v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull ext2, quota, udf fixes and cleanups from Jan Kara:
- two small quota fixes (in grace time handling and possible missed
accounting of preallocated blocks beyond EOF).
- some ext2 cleanups
- udf fixes for better compatibility with Windows 10 generated media
(named streams, write-protection using domain-identifier, placement
of volume recognition sequence)
- some udf cleanups
* tag 'for_v5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: fix wrong condition in is_quota_modification()
fs-udf: Delete an unnecessary check before brelse()
ext2: Delete an unnecessary check before brelse()
udf: Drop forward function declarations
udf: Verify domain identifier fields
udf: augment UDF permissions on new inodes
udf: Use dynamic debug infrastructure
udf: reduce leakage of blocks related to named streams
udf: prevent allocation beyond UDF partition
quota: fix condition for resetting time limit in do_set_dqblk()
ext2: code cleanup for ext2_free_blocks()
ext2: fix block range in ext2_data_block_valid()
udf: support 2048-byte spacing of VRS descriptors on 4K media
udf: refactor VRS descriptor identification
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Added new ext4 debugging ioctls to allow userspace to get information
about the state of the extent status cache.
Dropped workaround for pre-1970 dates which were encoded incorrectly
in pre-4.4 kernels. Since both the kernel correctly generates, and
e2fsck detects and fixes this issue for the past four years, it'e time
to drop the workaround. (Also, it's not like files with dates in the
distant past were all that common in the first place.)
A lot of miscellaneous bug fixes and cleanups, including some ext4
Documentation fixes. Also included are two minor bug fixes in
fs/unicode"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
unicode: make array 'token' static const, makes object smaller
unicode: Move static keyword to the front of declarations
ext4: add missing bigalloc documentation.
ext4: fix kernel oops caused by spurious casefold flag
ext4: fix integer overflow when calculating commit interval
ext4: use percpu_counters for extent_status cache hits/misses
ext4: fix potential use after free after remounting with noblock_validity
jbd2: add missing tracepoint for reserved handle
ext4: fix punch hole for inline_data file systems
ext4: rework reserved cluster accounting when invalidating pages
ext4: documentation fixes
ext4: treat buffers with write errors as containing valid data
ext4: fix warning inside ext4_convert_unwritten_extents_endio
ext4: set error return correctly when ext4_htree_store_dirent fails
ext4: drop legacy pre-1970 encoding workaround
ext4: add new ioctl EXT4_IOC_GET_ES_CACHE
ext4: add a new ioctl EXT4_IOC_GETSTATE
ext4: add a new ioctl EXT4_IOC_CLEAR_ES_CACHE
jbd2: flush_descriptor(): Do not decrease buffer head's ref count
ext4: remove unnecessary error check
...
Merge tag 'upstream-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull UBI, UBIFS and JFFS2 updates from Richard Weinberger:
"UBI:
- Be less stupid when placing a fastmap anchor
- Try harder to get an empty PEB in case of contention
- Make ubiblock to warn if image is not a multiple of 512
UBIFS:
- Various fixes in error paths
JFFS2:
- Various fixes in error paths"
* tag 'upstream-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
jffs2: Fix memory leak in jffs2_scan_eraseblock() error path
jffs2: Remove jffs2_gc_fetch_page and jffs2_gc_release_page
jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to_fragtree()
ubi: block: Warn if volume size is not multiple of 512
ubifs: Fix memory leak bug in alloc_ubifs_info() error path
ubifs: Fix memory leak in __ubifs_node_verify_hmac error path
ubifs: Fix memory leak in read_znode() error path
ubi: ubi_wl_get_peb: Increase the number of attempts while getting PEB
ubi: Don't do anchor move within fastmap area
ubifs: Remove redundant assignment to pointer fname
Merge tag 'mtd/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD updates from Richard Weinberger:
"MTD core changes:
- add debugfs nodes for querying the flash name and id
- mtd parser reorganization
SPI NOR core changes:
- always use bounce buffer for register read/writes
- move m25p80 code in spi-nor.c
- rework hwcaps selection for the spi-mem case
- rework the core in order to move the manufacturer specific code out
of it:
- regroup flash parameters in 'struct spi_nor_flash_parameter'
- add default_init() and post_sfdp() hooks to tweak the flash
parameters
- introduce the ->set_4byte(), ->convert_addr() and ->setup()
methods, to deal with manufacturer specific code
- rework the SPI NOR lock/unlock logic
- fix an error code in spi_nor_read_raw()
- fix a memory leak bug
- enable the debugfs for the partname and partid
- add support for few flashes
SPI NOR controller drivers changes:
- intel-spi:
- Whitelist 4B read commands
- Add support for Intel Tiger Lake SPI serial flash
- aspeed-smc: Add of_node_put()
- hisi-sfc: add of_node_put()
- cadence-quadspi: Fix QSPI RCU Schedule Stall
NAND core:
- Fixing typos
- Adding missing of_node_put() in various drivers
Raw NAND controller drivers:
- Macronix: new controller driver
- Omap2: fix the number of bitflips returned
- Brcmnand: fix a pointer not iterating over all the page chunks
- W90x900: driver removed
- Onenand: fix a memory leak
- Sharpsl: missing include guard
- STM32: avoid warnings when building with W=1
- Ingenic: fix a coccinelle warning
- r852: call a helper to simplify the code
CFI core:
- Kill useless initializer in mtd_do_chip_probe()
- Fix a rare write failure seen on some cfi_cmdset_0002 compliant
Parallel NORs
- Bunch of cleanups for cfi_cmdset_0002 driver's write functions by
Tokunori Ikegami"
* tag 'mtd/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (77 commits)
mtd: pmc551: Remove set but not used variable 'soff_lo'
mtd: cfi_cmdset_0002: Fix do_erase_chip() to get chip as erasing mode
mtd: sm_ftl: Fix memory leak in sm_init_zone() error path
mtd: parsers: Move CMDLINE parser
mtd: parsers: Move OF parser
mtd: parsers: Move BCM63xx parser
mtd: parsers: Move BCM47xx parser
mtd: parsers: Move TI AR7 parser
mtd: pismo: Simplify getting the adapter of a client
mtd: phram: Module parameters add writable permissions
mtd: pxa2xx: Use ioremap_cache insted of ioremap_cached
mtd: spi-nor: Rename "n25q512a" to "mt25qu512a (n25q512a)"
mtd: spi-nor: Add support for mt35xu02g
mtd: rawnand: omap2: Fix number of bitflips reporting with ELM
mtd: rawnand: brcmnand: Fix ecc chunk calculation for erased page bitfips
mtd: spi-nor: remove superfluous pass of nor->info->sector_size
mtd: spi-nor: enable the debugfs for the partname and partid
mtd: mtdcore: add debugfs nodes for querying the flash name and id
mtd: spi-nor: hisi-sfc: Add of_node_put() before break
mtd: spi-nor: aspeed-smc: Add of_node_put()
...
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