diff options
| author | Will Deacon <[email protected]> | 2012-09-18 19:18:35 +0100 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2012-11-09 14:12:55 +0000 |
| commit | 864aa04cd02979c2c755cb28b5f4fe56039171c0 (patch) | |
| tree | 1f5fb36b17bc8a48341c0c039399e7c5a5d04ef4 /tools/perf/util/trace-event-scripting.c | |
| parent | 3d70f8c617a436c7146ecb81df2265b4626dfe89 (diff) | |
ARM: mm: use pteval_t to represent page protection values
When updating the page protection map after calculating the user_pgprot
value, the base protection map is temporarily stored in an unsigned long
type, causing truncation of the protection bits when LPAE is enabled.
This effectively means that calls to mprotect() will corrupt the upper
page attributes, clearing the XN bit unconditionally.
This patch uses pteval_t to store the intermediate protection values,
preserving the upper bits for 64-bit descriptors.
Cc: [email protected]
Acked-by: Nicolas Pitre <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions