LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Avi Kivity <avi@qumranet.com>
To: kvm-devel@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org, mingo@elte.hu
Subject: [PATCH 1/5] KVM: SVM: Fix SVM idt confusion
Date: Tue, 23 Jan 2007 14:32:04 -0000	[thread overview]
Message-ID: <20070123143204.3639F250136@il.qumranet.com> (raw)
In-Reply-To: <45B61C09.5020501@qumranet.com>

From: Leonard Norrgard <leonard.norrgard@refactor.fi>

There's an obvious typo in svm_{get,set}_idt, causing it to access the ldt
instead.

Because these functions are only called for save/load on AMD, the bug does not
impact normal operation.  With the fix, save/load works as expected on AMD
hosts.

Signed-off-by: Uri Lublin <uril@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

Index: linux-2.6/drivers/kvm/svm.c
===================================================================
--- linux-2.6.orig/drivers/kvm/svm.c
+++ linux-2.6/drivers/kvm/svm.c
@@ -680,14 +680,14 @@ static void svm_get_cs_db_l_bits(struct 
 
 static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 {
-	dt->limit = vcpu->svm->vmcb->save.ldtr.limit;
-	dt->base = vcpu->svm->vmcb->save.ldtr.base;
+	dt->limit = vcpu->svm->vmcb->save.idtr.limit;
+	dt->base = vcpu->svm->vmcb->save.idtr.base;
 }
 
 static void svm_set_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)
 {
-	vcpu->svm->vmcb->save.ldtr.limit = dt->limit;
-	vcpu->svm->vmcb->save.ldtr.base = dt->base ;
+	vcpu->svm->vmcb->save.idtr.limit = dt->limit;
+	vcpu->svm->vmcb->save.idtr.base = dt->base ;
 }
 
 static void svm_get_gdt(struct kvm_vcpu *vcpu, struct descriptor_table *dt)

  reply	other threads:[~2007-01-23 14:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-23 14:30 [PATCH 0/5] KVM fixes for 2.6.20 Avi Kivity
2007-01-23 14:32 ` Avi Kivity [this message]
2007-01-23 14:33 ` [PATCH 2/5] KVM: Emulate IA32_MISC_ENABLE msr Avi Kivity
2007-01-23 14:34 ` [PATCH 3/5] KVM: MMU: Perform access checks in walk_addr() Avi Kivity
2007-01-23 14:35 ` [PATCH 4/5] KVM: MMU: Report nx faults to the guest Avi Kivity
2007-01-23 14:36 ` [PATCH 5/5] KVM: SVM: Propagate cpu shutdown events to userspace Avi Kivity

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20070123143204.3639F250136@il.qumranet.com \
    --to=avi@qumranet.com \
    --cc=akpm@osdl.org \
    --cc=kvm-devel@lists.sourceforge.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --subject='Re: [PATCH 1/5] KVM: SVM: Fix SVM idt confusion' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).