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| 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/kernel/cpu_setup_power.S | |
| parent | 7f664cf9e422105644818b180349e3b10a370de7 (diff) | |
| download | linux-45706bb53d118b5340a12926e26444d73b6491f9.tar.gz linux-45706bb53d118b5340a12926e26444d73b6491f9.tar.bz2 linux-45706bb53d118b5340a12926e26444d73b6491f9.zip | |
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/kernel/cpu_setup_power.S')
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_power.S | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index 46733535cc0b..9c9b7411b28b 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -137,15 +137,11 @@ __init_HFSCR: /* * Clear the TLB using the specified IS form of tlbiel instruction * (invalidate by congruence class). P7 has 128 CCs., P8 has 512. - * - * r3 = IS field */ __init_tlb_power7: - li r3,0xc00 /* IS field = 0b11 */ -_GLOBAL(__flush_tlb_power7) li r6,128 mtctr r6 - mr r7,r3 /* IS field */ + li r7,0xc00 /* IS field = 0b11 */ ptesync 2: tlbiel r7 addi r7,r7,0x1000 @@ -154,11 +150,9 @@ _GLOBAL(__flush_tlb_power7) 1: blr __init_tlb_power8: - li r3,0xc00 /* IS field = 0b11 */ -_GLOBAL(__flush_tlb_power8) li r6,512 mtctr r6 - mr r7,r3 /* IS field */ + li r7,0xc00 /* IS field = 0b11 */ ptesync 2: tlbiel r7 addi r7,r7,0x1000 |