diff options
| author | Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> | 2014-12-19 08:41:05 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-03-17 07:52:48 +1100 |
| commit | 45706bb53d118b5340a12926e26444d73b6491f9 (patch) | |
| tree | b88f88494c7fd725987973c83b3cbf4cb1760911 /arch/powerpc/include/asm/cputable.h | |
| parent | 7f664cf9e422105644818b180349e3b10a370de7 (diff) | |
| download | linux-45706bb53d118b5340a12926e26444d73b6491f9.tar.bz2 | |
powerpc/book3s: Fix flush_tlb cpu_spec hook to take a generic argument.
The flush_tlb hook in cpu_spec was introduced as a generic function hook
to invalidate TLBs. But the current implementation of flush_tlb hook
takes IS (invalidation selector) as an argument which is architecture
dependent. Hence, It is not right to have a generic routine where caller
has to pass non-generic argument.
This patch fixes this and makes flush_tlb hook as high level API.
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/cputable.h')
| -rw-r--r-- | arch/powerpc/include/asm/cputable.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 5cf5a6d10685..6367b8347dad 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -100,7 +100,7 @@ struct cpu_spec { /* * Processor specific routine to flush tlbs. */ - void (*flush_tlb)(unsigned long inval_selector); + void (*flush_tlb)(unsigned int action); }; @@ -114,6 +114,12 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start, extern const char *powerpc_base_platform; +/* TLB flush actions. Used as argument to cpu_spec.flush_tlb() hook */ +enum { + TLB_INVAL_SCOPE_GLOBAL = 0, /* invalidate all TLBs */ + TLB_INVAL_SCOPE_LPID = 1, /* invalidate TLBs for current LPID */ +}; + #endif /* __ASSEMBLY__ */ /* CPU kernel features */ |