diff options
| author | Olaf Hering <olaf@aepfle.de> | 2012-10-01 21:18:01 +0200 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-04 11:30:30 -0400 |
| commit | 34b6f01a79bd65fbd06511d2cb7b28e33a506246 (patch) | |
| tree | 68adb1dad56bf5e11971a8344e4d3cbb09052a54 /arch/x86/xen/vdso.h | |
| parent | 9b6934a3b449266850149b717597408354039e95 (diff) | |
xen pv-on-hvm: add pfn_is_ram helper for kdump
Register pfn_is_ram helper speed up reading /proc/vmcore in the kdump
kernel. See commit message of 997c136f518c ("fs/proc/vmcore.c: add hook
to read_from_oldmem() to check for non-ram pages") for details.
It makes use of a new hvmop HVMOP_get_mem_type which was introduced in
xen 4.2 (23298:26413986e6e0) and backported to 4.1.1.
The new function is currently only enabled for reading /proc/vmcore.
Later it will be used also for the kexec kernel. Since that requires
more changes in the generic kernel make it static for the time being.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen/vdso.h')
0 files changed, 0 insertions, 0 deletions