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| author |   Nicholas Piggin <npiggin@gmail.com> | 2018-09-15 01:30:46 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-09-19 21:59:41 +1000 |
| commit | 505ea82eabd2dfc69ca7a50c2996dbe969a89bec (patch) | |
| tree | 525df5e9073b23b4cd0e3068a13bebda2fd3e330 /arch/powerpc/mm/slb.c | |
| parent | powerpc/64s/hash: Fix stab_rr off by one initialization (diff) | |
| download | linux-dev-505ea82eabd2dfc69ca7a50c2996dbe969a89bec.tar.xz linux-dev-505ea82eabd2dfc69ca7a50c2996dbe969a89bec.zip | |
powerpc/64s/hash: avoid the POWER5 < DD2.1 slb invalidate workaround on POWER8/9
I only have POWER8/9 to test, so just remove it for those.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/mm/slb.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/mm/slb.c b/arch/powerpc/mm/slb.c index 07ece013856b..0656d20d59ec 100644 --- a/arch/powerpc/mm/slb.c +++ b/arch/powerpc/mm/slb.c @@ -326,9 +326,11 @@ void switch_slb(struct task_struct *tsk, struct mm_struct *mm) __slb_flush_and_rebolt(); } - /* Workaround POWER5 < DD2.1 issue */ - if (offset == 1 || offset > SLB_CACHE_ENTRIES) - asm volatile("slbie %0" : : "r" (slbie_data)); + if (!cpu_has_feature(CPU_FTR_ARCH_207S)) { + /* Workaround POWER5 < DD2.1 issue */ + if (offset == 1 || offset > SLB_CACHE_ENTRIES) + asm volatile("slbie %0" : : "r" (slbie_data)); + } get_paca()->slb_cache_ptr = 0; copy_mm_to_paca(mm); |