Messages in this thread Patch in this message | | | Date | Tue, 15 Jan 2008 18:39:57 -0800 | From | venkatesh.pallipadi@intel ... | Subject | [patch 2/4] x86: PAT followup - Remove KERNPG_TABLE from pte entry |
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KERNPG_TABLE was a bug in earlier patch. Remove it from pte. pte_val() check is redundant as this routine is called immediately after a ptepage is allocated afresh.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Index: linux-2.6.git/arch/x86/mm/init_64.c =================================================================== --- linux-2.6.git.orig/arch/x86/mm/init_64.c 2008-01-15 11:02:23.000000000 -0800 +++ linux-2.6.git/arch/x86/mm/init_64.c 2008-01-15 11:06:37.000000000 -0800 @@ -541,9 +541,6 @@ if (address >= end) break; - if (pte_val(*pte)) - continue; - /* Nothing to map. Map the null page */ if (!(address & (~PAGE_MASK)) && (address + PAGE_SIZE <= end) && @@ -561,9 +558,9 @@ } if (exec) - entry = _PAGE_NX|_KERNPG_TABLE|_PAGE_GLOBAL|address; + entry = _PAGE_NX|_PAGE_GLOBAL|address; else - entry = _KERNPG_TABLE|_PAGE_GLOBAL|address; + entry = _PAGE_GLOBAL|address; entry &= __supported_pte_mask; set_pte(pte, __pte(entry)); } --
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