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| author | Jason Baron <jbaron@redhat.com> | 2012-08-02 15:44:16 -0400 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2012-08-16 13:41:15 -0500 |
| commit | ddb97f1debbb6be8d871f3b565f7b8befebf0f4f (patch) | |
| tree | a81ce727e2c5f9d058d156b0754bdbaaafd00d25 /osdep.h | |
| parent | 3c4a4d0dcbf4269e125f92df06816db1c1e86d20 (diff) | |
| download | qemu-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 'osdep.h')
| -rw-r--r-- | osdep.h | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -103,6 +103,11 @@ void qemu_vfree(void *ptr); #else #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID #endif +#ifdef MADV_DONTDUMP +#define QEMU_MADV_DONTDUMP MADV_DONTDUMP +#else +#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID +#endif #elif defined(CONFIG_POSIX_MADVISE) @@ -110,6 +115,7 @@ void qemu_vfree(void *ptr); #define QEMU_MADV_DONTNEED POSIX_MADV_DONTNEED #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID +#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID #else /* no-op */ @@ -117,6 +123,7 @@ void qemu_vfree(void *ptr); #define QEMU_MADV_DONTNEED QEMU_MADV_INVALID #define QEMU_MADV_DONTFORK QEMU_MADV_INVALID #define QEMU_MADV_MERGEABLE QEMU_MADV_INVALID +#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID #endif |