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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-05-09 12:59:38 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-05-14 22:58:52 +1000 |
| commit | 397d2300b08cdee052053e362018cdb6dd65eea2 (patch) | |
| tree | a6b19243288049b2e4dbda73bb7f3692bf1ba9de /arch/powerpc/mm | |
| parent | Merge tag 'powerpc-5.2-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (diff) | |
| download | linux-dev-397d2300b08cdee052053e362018cdb6dd65eea2.tar.xz linux-dev-397d2300b08cdee052053e362018cdb6dd65eea2.zip | |
powerpc/32s: fix flush_hash_pages() on SMP
flush_hash_pages() runs with data translation off, so current
task_struct has to be accesssed using physical address.
Fixes: f7354ccac844 ("powerpc/32: Remove CURRENT_THREAD_INFO and rename TI_CPU")
Cc: stable@vger.kernel.org # v5.1+
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/book3s32/hash_low.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/mm/book3s32/hash_low.S b/arch/powerpc/mm/book3s32/hash_low.S index e27792d0b744..8366c2abeafc 100644 --- a/arch/powerpc/mm/book3s32/hash_low.S +++ b/arch/powerpc/mm/book3s32/hash_low.S @@ -539,7 +539,8 @@ _GLOBAL(flush_hash_pages) #ifdef CONFIG_SMP lis r9, (mmu_hash_lock - PAGE_OFFSET)@ha addi r9, r9, (mmu_hash_lock - PAGE_OFFSET)@l - lwz r8,TASK_CPU(r2) + tophys (r8, r2) + lwz r8, TASK_CPU(r8) oris r8,r8,9 10: lwarx r0,0,r9 cmpi 0,r0,0 |