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| author | James Hogan <james.hogan@imgtec.com> | 2016-05-11 12:50:52 (GMT) |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2016-05-13 13:30:25 (GMT) |
| commit | f18bdfa191df3947879f93519ce4a4985e5f5fce (patch) | |
| tree | cd76367f5217d0c81d43af9b1d451a54dd6faf59 /arch/mips/include/asm/cpu-features.h | |
| parent | e06a1548f3043febb658b58ec5ccbc7d03a785af (diff) | |
| download | linux-f18bdfa191df3947879f93519ce4a4985e5f5fce.tar.xz | |
MIPS: Add defs & probing of [X]ContextConfig
The CP0_[X]ContextConfig registers are present if CP0_Config3.CTXTC or
CP0_Config3.SM are set, and provide more control over which bits of
CP0_[X]Context are set to the faulting virtual address on a TLB
exception.
KVM/VZ will need to be able to save and restore these registers in the
guest context, so add the relevant definitions and probing of the
ContextConfig feature in the root context first.
[ralf@linux-mips.org: resolve merge conflict.]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13225/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/cpu-features.h')
| -rw-r--r-- | arch/mips/include/asm/cpu-features.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index 5d82b01..7962b25 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -450,4 +450,8 @@ # define cpu_has_badinstrp (cpu_data[0].options & MIPS_CPU_BADINSTRP) #endif +#ifndef cpu_has_contextconfig +# define cpu_has_contextconfig (cpu_data[0].options & MIPS_CPU_CTXTC) +#endif + #endif /* __ASM_CPU_FEATURES_H */ |