Patch "KVM: VMX: use correct vmcs_read/write for guest segment selector/base" has been added to the 4.9-stable tree

Patch "KVM: VMX: use correct vmcs_read/write for guest segment selector/base" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    KVM: VMX: use correct vmcs_read/write for guest segment selector/base

to the 4.9-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-vmx-use-correct-vmcs_read-write-for-guest-segment-selector-base.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 96794e4ed4d758272c486e1529e431efb7045265 Mon Sep 17 00:00:00 2001
From: Chao Peng <chao.p.peng@linux.intel.com>
Date: Tue, 21 Feb 2017 03:50:01 -0500
Subject: KVM: VMX: use correct vmcs_read/write for guest segment selector/base

From: Chao Peng <chao.p.peng@linux.intel.com>

commit 96794e4ed4d758272c486e1529e431efb7045265 upstream.

Guest segment selector is 16 bit field and guest segment base is natural
width field. Fix two incorrect invocations accordingly.

Without this patch, build fails when aggressive inlining is used with ICC.

Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kvm/vmx.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3693,7 +3693,7 @@ static void fix_rmode_seg(int seg, struc
 	}
 
 	vmcs_write16(sf->selector, var.selector);
-	vmcs_write32(sf->base, var.base);
+	vmcs_writel(sf->base, var.base);
 	vmcs_write32(sf->limit, var.limit);
 	vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(&var));
 }
@@ -8202,7 +8202,7 @@ static void kvm_flush_pml_buffers(struct
 static void vmx_dump_sel(char *name, uint32_t sel)
 {
 	pr_err("%s sel=0x%04x, attr=0x%05x, limit=0x%08x, base=0x%016lx\n",
-	       name, vmcs_read32(sel),
+	       name, vmcs_read16(sel),
 	       vmcs_read32(sel + GUEST_ES_AR_BYTES - GUEST_ES_SELECTOR),
 	       vmcs_read32(sel + GUEST_ES_LIMIT - GUEST_ES_SELECTOR),
 	       vmcs_readl(sel + GUEST_ES_BASE - GUEST_ES_SELECTOR));


Patches currently in stable-queue which might be from chao.p.peng@linux.intel.com are

queue-4.9/kvm-vmx-use-correct-vmcs_read-write-for-guest-segment-selector-base.patch