From: Gleb Natapov <gleb@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: avi@redhat.com, kvm@vger.kernel.org, joerg.roedel@amd.com,
mingo@elte.hu, a.p.zijlstra@chello.nl
Subject: [PATCH 9/9] KVM, VMX: Check for automatic switch msr table overflow.
Date: Mon, 3 Oct 2011 15:49:55 +0200 [thread overview]
Message-ID: <1317649795-18259-10-git-send-email-gleb@redhat.com> (raw)
In-Reply-To: <1317649795-18259-1-git-send-email-gleb@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
arch/x86/kvm/vmx.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index fef7bd9..afa9aa3 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1281,7 +1281,11 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
if (m->guest[i].index == msr)
break;
- if (i == m->nr) {
+ if (i == NR_AUTOLOAD_MSRS) {
+ printk_once(KERN_WARNING"Not enough mst switch entries. "
+ "Can't add msr %x\n", msr);
+ return;
+ } else if (i == m->nr) {
++m->nr;
vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->nr);
vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->nr);
--
1.7.5.3
prev parent reply other threads:[~2011-10-03 13:51 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-03 13:49 [PATCH 0/9] perf support for x86 guest/host-only bits Gleb Natapov
2011-10-03 13:49 ` [PATCH 1/9] perf, core: Introduce attrs to count in either host or guest mode Gleb Natapov
2011-10-03 13:49 ` [PATCH 2/9] perf, amd: Use GO/HO bits in perf-ctr Gleb Natapov
2011-10-03 13:49 ` [PATCH 3/9] perf, tools: Add support for guest/host-only profiling Gleb Natapov
2011-10-03 13:49 ` [PATCH 4/9] perf, tools: Fix copy&paste error in perf-kvm option description Gleb Natapov
2011-10-03 13:49 ` [PATCH 5/9] perf, tools: Do guest-only counting in perf-kvm by default Gleb Natapov
2011-10-03 13:49 ` [PATCH 6/9] perf, intel: Use GO/HO bits in perf-ctr Gleb Natapov
2011-10-03 15:06 ` Avi Kivity
2011-10-03 15:41 ` Gleb Natapov
2011-10-04 9:21 ` Avi Kivity
2011-10-03 13:49 ` [PATCH 7/9] KVM, VMX: add support for switching of PERF_GLOBAL_CTRL Gleb Natapov
2011-10-04 9:32 ` Avi Kivity
2011-10-04 9:57 ` Gleb Natapov
2011-10-03 13:49 ` [PATCH 8/9] KVM, VMX: Add support for guest/host-only profiling Gleb Natapov
2011-10-03 15:00 ` Avi Kivity
2011-10-03 15:36 ` Gleb Natapov
2011-10-04 9:28 ` Avi Kivity
2011-10-04 9:56 ` Gleb Natapov
2011-10-04 11:10 ` Avi Kivity
2011-10-04 11:17 ` Gleb Natapov
2011-10-04 11:24 ` Avi Kivity
2011-10-04 12:12 ` Gleb Natapov
2011-10-03 13:49 ` Gleb Natapov [this message]
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