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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 12:51:43 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 13:08:57 +0300 |
| commit | 9581991a60817abe311c2581ae4554b28bfa32f1 (patch) | |
| tree | c5766a37f856a44f1077b87093771c0d9b3e87ad /arch/powerpc/include/asm | |
| parent | 4ebbd075bcde7884e078d4360510b989f559bfec (diff) | |
| download | linux-9581991a60817abe311c2581ae4554b28bfa32f1.tar.xz | |
KVM: PPC: Book3S HV P9: Use large decrementer for HDEC
On processors that don't suppress the HDEC exceptions when LPCR[HDICE]=0,
this could help reduce needless guest exits due to leftover exceptions on
entering the guest.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-6-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/time.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/time.h b/arch/powerpc/include/asm/time.h index fd09b4797fd7..69b6be617772 100644 --- a/arch/powerpc/include/asm/time.h +++ b/arch/powerpc/include/asm/time.h @@ -18,6 +18,8 @@ #include <asm/vdso/timebase.h> /* time.c */ +extern u64 decrementer_max; + extern unsigned long tb_ticks_per_jiffy; extern unsigned long tb_ticks_per_usec; extern unsigned long tb_ticks_per_sec; |