| Message ID | 20200502111347.541836-5-aneesh.kumar@linux.ibm.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | powerpc/book3s/64/pkeys: Simplify the code | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (1bc92fe3175eb26ff37e580c0383d7a9abe06835) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 11 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/mm/book3s64/pkeys.c b/arch/powerpc/mm/book3s64/pkeys.c index 1199fc2bfaec..d60e6bfa3e03 100644 --- a/arch/powerpc/mm/book3s64/pkeys.c +++ b/arch/powerpc/mm/book3s64/pkeys.c @@ -124,7 +124,10 @@ static int pkey_initialize(void) #else os_reserved = 0; #endif - /* Bits are in LE format. */ + /* + * key 1 is recommended not to be used. PowerISA(3.0) page 1015, + * programming note. + */ reserved_allocation_mask = (0x1 << 1) | (0x1 << execute_only_key); /* register mask is in BE format */
This explains the details w.r.t key 1. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> --- arch/powerpc/mm/book3s64/pkeys.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)