Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=69b1415e934fc1a796a817e32d84162ae65962f5
Commit: 69b1415e934fc1a796a817e32d84162ae65962f5
Parent: 7bfeab9af95565e38a97fbcfb631e5b140241187
Author: Thomas Gleixner <[EMAIL PROTECTED]>
AuthorDate: Wed Feb 13 11:04:50 2008 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Thu Feb 14 23:30:20 2008 +0100
x86: cpa: ensure page alignment
the cpa API is page aligned - warn about any weird alignments.
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
arch/x86/mm/pageattr.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index bd61ed1..5d22594 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -688,6 +688,15 @@ static int change_page_attr_set_clr(unsigned long addr,
int numpages,
if (!pgprot_val(mask_set) && !pgprot_val(mask_clr))
return 0;
+ /* Ensure we are PAGE_SIZE aligned */
+ if (addr & ~PAGE_MASK) {
+ addr &= PAGE_MASK;
+ /*
+ * People should not be passing in unaligned addresses:
+ */
+ WARN_ON_ONCE(1);
+ }
+
cpa.vaddr = addr;
cpa.numpages = numpages;
cpa.mask_set = mask_set;
-
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