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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-09-25 20:31:15 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-10-09 13:37:31 +0200 |
| commit | 5d9cea8a552ee122e21fbd5a3c5d4eb85f648e06 (patch) | |
| tree | ac52c4515bcd1d871b87731a876554b367be03a0 /sound | |
| parent | powerpc/pseries: Remove unused r0 in the hcall tracing code (diff) | |
| download | linux-5d9cea8a552ee122e21fbd5a3c5d4eb85f648e06.tar.xz linux-5d9cea8a552ee122e21fbd5a3c5d4eb85f648e06.zip | |
powerpc/8xx: Fix pte_access_permitted() for PAGE_NONE
On 8xx, PAGE_NONE is handled by setting _PAGE_NA instead of clearing
_PAGE_USER.
But then pte_user() returns 1 also for PAGE_NONE.
As _PAGE_NA prevent reads, add a specific version of pte_read()
that returns 0 when _PAGE_NA is set instead of always returning 1.
Fixes: 351750331fc1 ("powerpc/mm: Introduce _PAGE_NA")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/57bcfbe578e43123f9ed73e040229b80f1ad56ec.1695659959.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions