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authorIngo Molnar <mingo@elte.hu>2008-03-03 13:53:58 +0100
committerIngo Molnar <mingo@elte.hu>2008-03-03 14:18:27 +0100
commit902955fc13259dcec1321d45251a477977fcba39 (patch)
treee9812c743b2e0f601486c9bb64525f24d4ac0fc4
parent9b5cf48b06a52c04b85c88642c3b620db8e1d592 (diff)
x86: revert "x86: fix pmd_bad and pud_bad to support huge pages"
revert commit cded932b75ab0a5f9181ee3da34a0a488d1a14fd, "x86: fix pmd_bad and pud_bad to support huge pages", it causes a bootup hang, as reported and bisected by Arjan van de Ven. Bisected-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/asm-x86/pgtable_32.h4
-rw-r--r--include/asm-x86/pgtable_64.h6
2 files changed, 3 insertions, 7 deletions
diff --git a/include/asm-x86/pgtable_32.h b/include/asm-x86/pgtable_32.h
index b478efa971e..a842c7222b1 100644
--- a/include/asm-x86/pgtable_32.h
+++ b/include/asm-x86/pgtable_32.h
@@ -91,9 +91,7 @@ extern unsigned long pg0[];
/* To avoid harmful races, pmd_none(x) should check only the lower when PAE */
#define pmd_none(x) (!(unsigned long)pmd_val(x))
#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)
-#define pmd_bad(x) ((pmd_val(x) \
- & ~(PAGE_MASK | _PAGE_USER | _PAGE_PSE | _PAGE_NX)) \
- != _KERNPG_TABLE)
+#define pmd_bad(x) ((pmd_val(x) & (~PAGE_MASK & ~_PAGE_USER)) != _KERNPG_TABLE)
#define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h
index 0a9258333cb..0a0b77bc736 100644
--- a/include/asm-x86/pgtable_64.h
+++ b/include/asm-x86/pgtable_64.h
@@ -153,14 +153,12 @@ static inline unsigned long pgd_bad(pgd_t pgd)
static inline unsigned long pud_bad(pud_t pud)
{
- return pud_val(pud) &
- ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER | _PAGE_PSE | _PAGE_NX);
+ return pud_val(pud) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
}
static inline unsigned long pmd_bad(pmd_t pmd)
{
- return pmd_val(pmd) &
- ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER | _PAGE_PSE | _PAGE_NX);
+ return pmd_val(pmd) & ~(PTE_MASK | _KERNPG_TABLE | _PAGE_USER);
}
#define pte_none(x) (!pte_val(x))