From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org
Subject: [PATCH 0/2] Fix GDT limit corruption on Intel
Date: Mon, 26 Jul 2010 18:32:37 +0300 [thread overview]
Message-ID: <1280158359-26593-1-git-send-email-avi@redhat.com> (raw)
Intel vmx does not restore GDT.LIMIT; this allows host userspace to look at
some host kernel bits by loading a segment register and looking whether a
trap happened or not.
Fix that by reloading GDT on heavyweight exits.
Avi Kivity (2):
KVM: VMX: Fix host GDT.LIMIT corruption
KVM: VMX: Use host_gdt variable wherever we need the host gdt
arch/x86/kvm/vmx.c | 19 ++++++++++---------
1 files changed, 10 insertions(+), 9 deletions(-)
next reply other threads:[~2010-07-26 15:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-26 15:32 Avi Kivity [this message]
2010-07-26 15:32 ` [PATCH 1/2] KVM: VMX: Fix host GDT.LIMIT corruption Avi Kivity
2010-07-26 15:32 ` [PATCH 2/2] KVM: VMX: Use host_gdt variable wherever we need the host gdt Avi Kivity
2010-07-28 0:25 ` [PATCH 0/2] Fix GDT limit corruption on Intel Marcelo Tosatti
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