This is a note to let you know that I've just added the patch titled
KVM/x86: Fix wrong macro references of X86_CR0_PG_BIT and X86_CR4_PAE_BIT in kvm_valid_sregs()
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-x86-fix-wrong-macro-references-of-x86_cr0_pg_bit-and-x86_cr4_pae_bit-in-kvm_valid_sregs.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 37b95951c58fdf08dc10afa9d02066ed9f176fb5 Mon Sep 17 00:00:00 2001
From: Tianyu Lan <lantianyu1986@xxxxxxxxx>
Date: Tue, 16 Jan 2018 17:34:07 +0800
Subject: KVM/x86: Fix wrong macro references of X86_CR0_PG_BIT and X86_CR4_PAE_BIT in kvm_valid_sregs()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Tianyu Lan <lantianyu1986@xxxxxxxxx>
commit 37b95951c58fdf08dc10afa9d02066ed9f176fb5 upstream.
kvm_valid_sregs() should use X86_CR0_PG and X86_CR4_PAE to check bit
status rather than X86_CR0_PG_BIT and X86_CR4_PAE_BIT. This patch is
to fix it.
Fixes: f29810335965a(KVM/x86: Check input paging mode when cs.l is set)
Reported-by: Jeremi Piotrowski <jeremi.piotrowski@xxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx>
Signed-off-by: Tianyu Lan <Tianyu.Lan@xxxxxxxxxxxxx>
Signed-off-by: Radim Krčmář <rkrcmar@xxxxxxxxxx>
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kvm/x86.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7482,13 +7482,13 @@ EXPORT_SYMBOL_GPL(kvm_task_switch);
int kvm_valid_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
{
- if ((sregs->efer & EFER_LME) && (sregs->cr0 & X86_CR0_PG_BIT)) {
+ if ((sregs->efer & EFER_LME) && (sregs->cr0 & X86_CR0_PG)) {
/*
* When EFER.LME and CR0.PG are set, the processor is in
* 64-bit mode (though maybe in a 32-bit code segment).
* CR4.PAE and EFER.LMA must be set.
*/
- if (!(sregs->cr4 & X86_CR4_PAE_BIT)
+ if (!(sregs->cr4 & X86_CR4_PAE)
|| !(sregs->efer & EFER_LMA))
return -EINVAL;
} else {
Patches currently in stable-queue which might be from lantianyu1986@xxxxxxxxx are
queue-4.14/kvm-x86-fix-wrong-macro-references-of-x86_cr0_pg_bit-and-x86_cr4_pae_bit-in-kvm_valid_sregs.patch