diff options
| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-07-10 20:36:37 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-11 10:22:33 +0200 |
| commit | f302a5bbe5eb95f3d4227d5bd0e9b92b1b125f4f (patch) | |
| tree | 876a3611b657898ea197c686e6aa4ab779541dd5 /arch | |
| parent | 69a7704d7a80b2563278a0c55c2ca6d6202280dc (diff) | |
x86: reserve SLIT
save the SLIT, in case we are using fixmap to read it, and that fixmap
could be cleared by others.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/srat_64.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c index 0fd67b81a8b..1b4763e26ea 100644 --- a/arch/x86/mm/srat_64.c +++ b/arch/x86/mm/srat_64.c @@ -100,7 +100,19 @@ static __init inline int srat_disabled(void) /* Callback for SLIT parsing */ void __init acpi_numa_slit_init(struct acpi_table_slit *slit) { - acpi_slit = slit; + unsigned length; + unsigned long phys; + + length = slit->header.length; + phys = find_e820_area(0, max_pfn_mapped<<PAGE_SHIFT, length, + PAGE_SIZE); + + if (phys == -1L) + panic(" Can not save slit!\n"); + + acpi_slit = __va(phys); + memcpy(acpi_slit, slit, length); + reserve_early(phys, phys + length, "ACPI SLIT"); } /* Callback for Proximity Domain -> LAPIC mapping */ |