From 8426097258c8092f8f3f7a5c420d3809e99b0769 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Mon, 4 Jul 2016 19:35:15 +0100 Subject: [PATCH] MIPS: KVM: Emulate generic QEMU machine on r6 T&E MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Default the guest PRId register to represent a generic QEMU machine instead of a 24kc on MIPSr6. 24kc isn't supported by r6 Linux kernels. Signed-off-by: James Hogan Cc: Paolo Bonzini Cc: Radim KrÄmář Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by: Paolo Bonzini --- arch/mips/kvm/trap_emul.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/mips/kvm/trap_emul.c b/arch/mips/kvm/trap_emul.c index 00e8dc3d36cb..091553942bcb 100644 --- a/arch/mips/kvm/trap_emul.c +++ b/arch/mips/kvm/trap_emul.c @@ -431,9 +431,15 @@ static int kvm_trap_emul_vcpu_setup(struct kvm_vcpu *vcpu) /* * Arch specific stuff, set up config registers properly so that the - * guest will come up as expected, for now we simulate a MIPS 24kc + * guest will come up as expected */ +#ifndef CONFIG_CPU_MIPSR6 + /* r2-r5, simulate a MIPS 24kc */ kvm_write_c0_guest_prid(cop0, 0x00019300); +#else + /* r6+, simulate a generic QEMU machine */ + kvm_write_c0_guest_prid(cop0, 0x00010000); +#endif /* * Have config1, Cacheable, noncoherent, write-back, write allocate. * Endianness, arch revision & virtually tagged icache should match -- 2.45.2