diff options
| author | Joey Gouly <joey.gouly@arm.com> | 2023-06-06 15:58:51 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2023-06-06 16:52:41 +0100 |
| commit | 7c302cfbee1f6cc23d831be4b6cf42f331019e68 (patch) | |
| tree | 2ef10b9b6f56cf31bd749db63d11cb32649a9e10 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | f0af339fc408a55c9f48f5d9ca47059ef1eb36b8 (diff) | |
arm64: add PTE_WRITE to PROT_SECT_NORMAL
With PIE enabled, PROT_SECT_NORMAL would map onto PAGE_KERNEL_RO.
Add PTE_WRITE so that this maps onto PAGE_KERNEL, so that it is writable.
Without PIE, this should enable DBM for PROT_SECT_NORMAL. However PTE_RDONLY
is already cleared, so the DBM mechanism is not used, and it is always writable,
so this is functionally equivalent.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20230606145859.697944-13-joey.gouly@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions