diff options
| author | Peter Zijlstra (Intel) <peterz@infradead.org> | 2025-06-03 14:14:44 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-06-11 11:20:52 +0200 |
| commit | a82b26451de126a5ae130361081986bc459afe9b (patch) | |
| tree | b6693dd1eb8882055be459afb294cbece4df350b /lib/mpi/mpi-scan.c | |
| parent | 0b0cae7119a0ec9449d7261b5e672a5fed765068 (diff) | |
x86/its: explicitly manage permissions for ITS pages
execmem_alloc() sets permissions differently depending on the kernel
configuration, CPU support for PSE and whether a page is allocated
before or after mark_rodata_ro().
Add tracking for pages allocated for ITS when patching the core kernel
and make sure the permissions for ITS pages are explicitly managed for
both kernel and module allocations.
Fixes: 872df34d7c51 ("x86/its: Use dynamic thunks for indirect branches")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Co-developed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20250603111446.2609381-5-rppt@kernel.org
Diffstat (limited to 'lib/mpi/mpi-scan.c')
0 files changed, 0 insertions, 0 deletions