diff options
| author | Peter Zijlstra (Intel) <peterz@infradead.org> | 2025-06-03 14:14:44 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-27 11:13:34 +0100 |
| commit | 343e124308a48e66aef53d278d239870beda9af7 (patch) | |
| tree | b8a001a8ca61172a9c9f128f34f82b2de7a68290 /include/linux/execmem.h | |
| parent | 861ec3e8fbac6e70ada6596d05e90490f137ab31 (diff) | |
x86/its: explicitly manage permissions for ITS pages
commit a82b26451de126a5ae130361081986bc459afe9b upstream.
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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/execmem.h')
0 files changed, 0 insertions, 0 deletions