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 v2 9/9] KVM, VMX: Check for automatic switch msr table overflow.
Date: Wed, 5 Oct 2011 14:01:24 +0200 [thread overview]
Message-ID: <1317816084-18026-10-git-send-email-gleb@redhat.com> (raw)
In-Reply-To: <1317816084-18026-1-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 d0d4afa..6e28d58 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1280,7 +1280,11 @@ 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
next prev parent reply other threads:[~2011-10-05 12:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-05 12:01 [PATCH v2 0/9] perf support for x86 guest/host-only bits Gleb Natapov
2011-10-05 12:01 ` [PATCH v2 1/9] perf, core: Introduce attrs to count in either host or guest mode Gleb Natapov
2011-10-05 12:01 ` [PATCH v2 2/9] perf, amd: Use GO/HO bits in perf-ctr Gleb Natapov
2011-10-05 12:01 ` [PATCH v2 3/9] perf, tools: Add support for guest/host-only profiling Gleb Natapov
2011-10-05 12:01 ` [PATCH v2 4/9] perf, tools: Fix copy&paste error in perf-kvm option description Gleb Natapov
2012-01-04 15:27 ` [tip:perf/core] perf kvm: Fix copy & paste error in description tip-bot for Joerg Roedel
2011-10-05 12:01 ` [PATCH v2 5/9] perf, tools: Do guest-only counting in perf-kvm by default Gleb Natapov
2011-10-05 12:01 ` [PATCH v2 6/9] perf, intel: Use GO/HO bits in perf-ctr Gleb Natapov
2011-10-05 14:18 ` Peter Zijlstra
2011-10-05 12:01 ` [PATCH v2 7/9] KVM, VMX: add support for switching of PERF_GLOBAL_CTRL Gleb Natapov
2011-10-05 12:01 ` [PATCH v2 8/9] KVM, VMX: Add support for guest/host-only profiling Gleb Natapov
2011-10-05 14:19 ` Peter Zijlstra
2011-10-05 15:29 ` Gleb Natapov
2011-10-05 15:34 ` Peter Zijlstra
2011-10-05 12:01 ` Gleb Natapov [this message]
2011-10-05 13:48 ` [PATCH v2 0/9] perf support for x86 guest/host-only bits Avi Kivity
2011-10-05 14:22 ` Peter Zijlstra
2011-10-10 10:34 ` Roedel, Joerg
2011-11-02 12:47 ` 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=1317816084-18026-10-git-send-email-gleb@redhat.com \
--to=gleb@redhat.com \
--cc=a.p.zijlstra@chello.nl \
--cc=avi@redhat.com \
--cc=joerg.roedel@amd.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®