From 9d88fca71a99a65c37cbfe481b4aa4e91a27ff13 Mon Sep 17 00:00:00 2001 From: Nadav Amit Date: Sun, 2 Nov 2014 11:54:52 +0200 Subject: KVM: x86: MOV to CR3 can set bit 63 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Although Intel SDM mentions bit 63 is reserved, MOV to CR3 can have bit 63 set. As Intel SDM states in section 4.10.4 "Invalidation of TLBs and Paging-Structure Caches": " MOV to CR3. ... If CR4.PCIDE = 1 and bit 63 of the instruction’s source operand is 0 ..." In other words, bit 63 is not reserved. KVM emulator currently consider bit 63 as reserved. Fix it. Signed-off-by: Nadav Amit Signed-off-by: Paolo Bonzini --- arch/x86/include/asm/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/x86/include') diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 904535fe825e..dc932d388c43 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -51,6 +51,7 @@ | X86_CR0_NW | X86_CR0_CD | X86_CR0_PG)) #define CR3_L_MODE_RESERVED_BITS 0xFFFFFF0000000000ULL +#define CR3_PCID_INVD (1UL << 63) #define CR4_RESERVED_BITS \ (~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\ | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \ -- cgit v1.2.1