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authorJason Baron <jbaron@redhat.com>2012-08-02 15:44:16 -0400
committerAnthony Liguori <aliguori@us.ibm.com>2012-08-16 13:41:15 -0500
commitddb97f1debbb6be8d871f3b565f7b8befebf0f4f (patch)
treea81ce727e2c5f9d058d156b0754bdbaaafd00d25 /qemu-options.hx
parent3c4a4d0dcbf4269e125f92df06816db1c1e86d20 (diff)
downloadqemu-arm-ddb97f1debbb6be8d871f3b565f7b8befebf0f4f.tar.gz
memory: add -machine dump-guest-core=on|off
Add a new '[,dump-guest-core=on|off]' option to the '-machine' option. When 'dump-guest-core=off' is specified, guest memory is omitted from the core dump. The default behavior continues to be to include guest memory when a core dump is triggered. In my testing, this brought the core dump size down from 384MB to 6MB on a 2GB guest. Is anything additional required to preserve this setting for migration or savevm? I don't believe so. Changelog: v3: Eliminate globals as per Anthony's suggestion set no dump from qemu_ram_remap() as well v2: move the option from -m to -machine, rename option dump -> dump-guest-core Signed-off-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'qemu-options.hx')
-rw-r--r--qemu-options.hx5
1 files changed, 4 insertions, 1 deletions
diff --git a/qemu-options.hx b/qemu-options.hx
index 47cb5bd311..6aeef6a845 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -37,7 +37,8 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \
" property accel=accel1[:accel2[:...]] selects accelerator\n"
" supported accelerators are kvm, xen, tcg (default: tcg)\n"
" kernel_irqchip=on|off controls accelerated irqchip support\n"
- " kvm_shadow_mem=size of KVM shadow MMU\n",
+ " kvm_shadow_mem=size of KVM shadow MMU\n"
+ " dump-guest-core=on|off include guest memory in a core dump (default=on)\n",
QEMU_ARCH_ALL)
STEXI
@item -machine [type=]@var{name}[,prop=@var{value}[,...]]
@@ -54,6 +55,8 @@ to initialize.
Enables in-kernel irqchip support for the chosen accelerator when available.
@item kvm_shadow_mem=size
Defines the size of the KVM shadow MMU.
+@item dump-guest-core=on|off
+Include guest memory in a core dump. The default is on.
@end table
ETEXI