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| author | smh22@firebug.cl.cam.ac.uk <smh22@firebug.cl.cam.ac.uk> | 2005-11-21 16:40:16 +0100 |
|---|---|---|
| committer | smh22@firebug.cl.cam.ac.uk <smh22@firebug.cl.cam.ac.uk> | 2005-11-21 16:40:16 +0100 |
| commit | 7cdf0f64076d05bab8edaac9aa02ddfef510afb5 (patch) | |
| tree | 547d0fa7c7a4d710771432de4e1edf77cf9124dc /tools/libxc/xg_save_restore.h | |
| parent | daee19a8a758c6f4add816b3f127a9cba04de1ce (diff) | |
| download | xen-7cdf0f64076d05bab8edaac9aa02ddfef510afb5.tar.gz xen-7cdf0f64076d05bab8edaac9aa02ddfef510afb5.tar.bz2 xen-7cdf0f64076d05bab8edaac9aa02ddfef510afb5.zip | |
Fix 'belt + braces' check in xc_linux_save and improve error handling
for live migrate (this includes making shadow enable idempotent).
Signed-off-by: Steven Hand <steven@xensource.com>
Diffstat (limited to 'tools/libxc/xg_save_restore.h')
| -rw-r--r-- | tools/libxc/xg_save_restore.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/libxc/xg_save_restore.h b/tools/libxc/xg_save_restore.h index d4eba303c3..c735deab41 100644 --- a/tools/libxc/xg_save_restore.h +++ b/tools/libxc/xg_save_restore.h @@ -125,6 +125,12 @@ static int get_platform_info(int xc_handle, uint32_t dom, /* Number of entries in the pfn_to_mfn_frame_list_list */ #define P2M_FLL_ENTRIES (((max_pfn)+(ulpp*ulpp)-1)/(ulpp*ulpp)) +/* Current guests allow 8MB 'slack' in their P2M */ +#define NR_SLACK_ENTRIES ((8 * 1024 * 1024) / PAGE_SIZE) + +/* Is the given PFN within the 'slack' region at the top of the P2M? */ +#define IS_REAL_PFN(_pfn) ((max_pfn - (_pfn)) > NR_SLACK_ENTRIES) + /* Returns TRUE if the PFN is currently mapped */ #define is_mapped(pfn_type) (!((pfn_type) & 0x80000000UL)) |