[PATCH] Workaround segfault when qemu-kvm runs inside a VM

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This was discussed here before so I'll just link to that earlier
discussion:

http://www.mail-archive.com/kvm@xxxxxxxxxxxxxxx/msg19890.html

The attached patch is a bit of a hack, but at least it stops qemu-kvm
from segfaulting when hardware virtualization isn't available.

Rich.

-- 
Richard Jones, Emerging Technologies, Red Hat  http://et.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
http://et.redhat.com/~rjones/virt-df/
>From add286b6e753f14e4ae0ab6b831441aea0d35497 Mon Sep 17 00:00:00 2001
From: Richard Jones <rjones@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 20 Aug 2009 13:52:20 +0100
Subject: [PATCH] Workaround segfault when qemu-kvm runs inside a VM (RHBZ#516543).

Regression was introduced by this commit:
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commitdiff;h=b8083e930efc1ee85a7ad7e700dbd0f52ebb32dd

Upstream discussion:
http://www.mail-archive.com/kvm@xxxxxxxxxxxxxxx/msg19890.html

Note: NOT UPSTREAM and this is something of a hack.  Upstream are
still debating how they really want to fix this.
---
 exec.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/exec.c b/exec.c
index 705bcf2..2091516 100644
--- a/exec.c
+++ b/exec.c
@@ -422,9 +422,6 @@ static uint8_t static_code_gen_buffer[DEFAULT_CODE_GEN_BUFFER_SIZE];
 
 static void code_gen_alloc(unsigned long tb_size)
 {
-    if (kvm_enabled())
-        return;
-
 #ifdef USE_STATIC_CODE_GEN_BUFFER
     code_gen_buffer = static_code_gen_buffer;
     code_gen_buffer_size = DEFAULT_CODE_GEN_BUFFER_SIZE;
-- 
1.6.4


[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux