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(parent: f569bd9) | patch
powerpc/64s/radix: prefetch user address in update_mmu_cache
authorNicholas Piggin <npiggin@gmail.com>
Fri, 1 Jun 2018 10:01:18 +0000 (20:01 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Sun, 3 Jun 2018 10:40:35 +0000 (20:40 +1000)
commit68662f85f3c3ea8a6fb61586a05955ab51bbb9e6
tree546d2ada5dd5d7e9fe1901285f23c9df67d0b224tree | snapshot
parentf569bd94efc821f485cb4742858fdfe16f03c201commit | diff
powerpc/64s/radix: prefetch user address in update_mmu_cache

Prefetch the faulting address in update_mmu_cache to give the page
table walker perhaps 100 cycles head start as locks are dropped and
the interrupt completed.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/mm/mem.c diff | blob | blame | history
arch/powerpc/mm/pgtable-book3s64.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)