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| author | Nicholas Piggin <npiggin@gmail.com> | 2019-06-23 12:41:52 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-07-03 07:19:35 +0200 |
| commit | 6c46fcce39f0eb4830078c5f1db289dd7196f84a (patch) | |
| tree | f22e81131e6077f2687ab6c776be8eb5c057783e /arch/powerpc/include/asm/ppc-opcode.h | |
| parent | powerpc/64s: Rename PPC_INVALIDATE_ERAT to PPC_ISA_3_0_INVALIDATE_ERAT (diff) | |
| download | linux-6c46fcce39f0eb4830078c5f1db289dd7196f84a.tar.xz linux-6c46fcce39f0eb4830078c5f1db289dd7196f84a.zip | |
powerpc/64s/radix: keep kernel ERAT over local process/guest invalidates
ISA v3.0 radix modes provide SLBIA variants which can invalidate ERAT
for effPID!=0 or for effLPID!=0, which allows user and guest
invalidations to retain kernel/host ERAT entries.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/ppc-opcode.h')
| -rw-r--r-- | arch/powerpc/include/asm/ppc-opcode.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 14f43b6cf7ec..971bdf84f6fc 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -591,7 +591,16 @@ #define PPC_SLBIA(IH) stringify_in_c(.long PPC_INST_SLBIA | \ ((IH & 0x7) << 21)) + +/* + * These may only be used on ISA v3.0 or later (aka. CPU_FTR_ARCH_300, radix + * implies CPU_FTR_ARCH_300). USER/GUEST invalidates may only be used by radix + * mode (on HPT these would also invalidate various SLBEs which may not be + * desired). + */ #define PPC_ISA_3_0_INVALIDATE_ERAT PPC_SLBIA(7) +#define PPC_RADIX_INVALIDATE_ERAT_USER PPC_SLBIA(3) +#define PPC_RADIX_INVALIDATE_ERAT_GUEST PPC_SLBIA(6) #define VCMPEQUD_RC(vrt, vra, vrb) stringify_in_c(.long PPC_INST_VCMPEQUD | \ ___PPC_RT(vrt) | ___PPC_RA(vra) | \ |