diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2024-08-20 19:23:54 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-08-30 21:29:54 +1000 |
| commit | 2f2b9a3adc66e978a1248ffb38df8477e8e97c57 (patch) | |
| tree | d6c479a0f24ca2426994bd881471a13136919e6d /arch/powerpc/mm | |
| parent | ac9f97ff8b324905d457f2694490c63b9deccbc6 (diff) | |
powerpc/32s: Reduce default size of module/execmem area
book3s/32 platforms have usually more memory than 8xx, but it is still
not worth reserving a full segment (256 Mbytes) for module text.
64Mbytes should be far enough.
Also fix TASK_SIZE when EXECMEM is not selected, and add a build
verification for overlap of module execmem space with user segments.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/c1f6a4e47f177d919561c6e97d31af5564923cf6.1724173828.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/book3s32/mmu.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s32/mmu.c b/arch/powerpc/mm/book3s32/mmu.c index 625fe7d08e06..2db167f4233f 100644 --- a/arch/powerpc/mm/book3s32/mmu.c +++ b/arch/powerpc/mm/book3s32/mmu.c @@ -223,6 +223,8 @@ int mmu_mark_initmem_nx(void) update_bats(); + BUILD_BUG_ON(ALIGN_DOWN(MODULES_VADDR, SZ_256M) < TASK_SIZE); + for (i = TASK_SIZE >> 28; i < 16; i++) { /* Do not set NX on VM space for modules */ if (is_module_segment(i << 28)) |