From: Alexander Graf Date: Thu, 29 Jul 2010 12:47:52 +0000 (+0200) Subject: KVM: PPC: Make PAM a define X-Git-Tag: v2.6.37-rc1~142^2~245 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=28e83b4fa7f8bd114940fa933ac8cbe80969eba2;p=linux.git KVM: PPC: Make PAM a define On PowerPC it's very normal to not support all of the physical RAM in real mode. To check if we're matching on the shared page or not, we need to know the limits so we can restrain ourselves to that range. So let's make it a define instead of open-coding it. And while at it, let's also increase it. Signed-off-by: Alexander Graf v2 -> v3: - RMO -> PAM (non-magic page) Signed-off-by: Avi Kivity --- diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 221cf85e9a6e..1674da8134cb 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -48,6 +48,9 @@ #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE) #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG) +/* Physical Address Mask - allowed range of real mode RAM access */ +#define KVM_PAM 0x0fffffffffffffffULL + struct kvm; struct kvm_run; struct kvm_vcpu; diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 06229fec5c9f..0ed5376df82c 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -465,7 +465,7 @@ static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data, r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data); } else { pte->eaddr = eaddr; - pte->raddr = eaddr & 0xffffffff; + pte->raddr = eaddr & KVM_PAM; pte->vpage = VSID_REAL | eaddr >> 12; pte->may_read = true; pte->may_write = true; @@ -579,7 +579,7 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, pte.may_execute = true; pte.may_read = true; pte.may_write = true; - pte.raddr = eaddr & 0xffffffff; + pte.raddr = eaddr & KVM_PAM; pte.eaddr = eaddr; pte.vpage = eaddr >> 12; }