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authorThomas Gleixner <tglx@linutronix.de>2008-02-04 16:48:08 +0100
committerIngo Molnar <mingo@elte.hu>2008-02-04 16:48:08 +0100
commit64f351d197d9ae8ad9624998afa8ee18e696ca44 (patch)
tree62673c9ecb52e390fb1c936cc1ad75a7da706b28 /arch/x86/mm/pageattr-test.c
parent07cf89c05f2bbafa002401ac4e09ac31678513e4 (diff)
x86: cpa selftest, skip non present entries
pud and pmd entries in the RAM area might be marked as non present. Do not try to modify them in the selftest. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/pageattr-test.c')
-rw-r--r--arch/x86/mm/pageattr-test.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c
index 7573e786d2f..398f3a578dd 100644
--- a/arch/x86/mm/pageattr-test.c
+++ b/arch/x86/mm/pageattr-test.c
@@ -137,7 +137,8 @@ static __init int exercise_pageattr(void)
for (k = 0; k < len[i]; k++) {
pte = lookup_address(addr[i] + k*PAGE_SIZE, &level);
- if (!pte || pgprot_val(pte_pgprot(*pte)) == 0) {
+ if (!pte || pgprot_val(pte_pgprot(*pte)) == 0 ||
+ !(pte_val(*pte) & _PAGE_PRESENT)) {
addr[i] = 0;
break;
}