Messages in this thread Patch in this message |  | | Date | Mon, 16 Jun 2008 14:54:46 -0700 | From | Jeremy Fitzhardinge <> | Subject | [PATCH 1/3] xen: reserve Xen-specific memory in e820 map |
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Make sure that the start_info and pfn->mfn translation array are reserved.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> --- arch/x86/xen/setup.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
=================================================================== --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -40,8 +40,21 @@ max_pfn = min(MAX_DOMAIN_PAGES, max_pfn); e820.nr_map = 0; + e820_add_region(0, LOWMEMSIZE(), E820_RAM); e820_add_region(HIGH_MEMORY, PFN_PHYS(max_pfn)-HIGH_MEMORY, E820_RAM); + + /* + * Reserve Xen bits: + * - mfn_list + * - xen_start_info + * See comment above "struct start_info" in <xen/interface/xen.h> + */ + e820_add_region(__pa(xen_start_info->mfn_list), + xen_start_info->pt_base - xen_start_info->mfn_list, + E820_RESERVED); + + sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map); return "Xen"; }
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