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| author | Matt Turner <mattst88@gmail.com> | 2026-09-05 15:29:33 -0400 |
|---|---|---|
| committer | Magnus Lindholm <linmag7@gmail.com> | 2026-10-18 00:44:41 +0200 |
| commit | 7ab5de838dfcb39322417253e69a7be67bae9e68 (patch) | |
| tree | 380e69b2440678cb216e1276bf8e27437e6040c9 /tools/perf/scripts/python | |
| parent | 965341a655ef564b98b095b3e329063c34c796d3 (diff) | |
| download | linux-7ab5de838dfcb39322417253e69a7be67bae9e68.tar.gz linux-7ab5de838dfcb39322417253e69a7be67bae9e68.zip | |
alpha: add ARCH_HAS_PTE_SPECIAL support
Add _PAGE_SPECIAL using bit 19 (0x80000), which is unused in the Alpha
PTE layout. This enables pte_special()/pte_mkspecial() for marking PTEs
that are not backed by struct page (VDSO mappings, zero page,
io_remap_pfn_range, etc.).
Include _PAGE_SPECIAL in _PAGE_CHG_MASK so it is preserved across
pte_modify() calls.
Also mark Alpha as "ok" in the pte_special feature matrix.
Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Matt Turner <mattst88@gmail.com>
Tested-by: Magnus Lindholm <linmag7@gmail.com>
Reviewed-by: Magnus Lindholm <linmag7@gmail.com>
Link: https://lore.kernel.org/r/20260905-arch-kconfig-options-v2-v2-12-83e8245761a2@gmail.com
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions