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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-07-19 14:49:06 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-02 13:11:06 +1000 |
| commit | 424de9c6e3f89399fc11afc1f53f89c5329132da (patch) | |
| tree | 1f2427b3c5e2994c5735d18238ea84057f3c6c15 /arch/powerpc/mm/pgtable-radix.c | |
| parent | a46cc7a90fd8d95bfbb2b27080efe872a1a51db4 (diff) | |
| download | linux-424de9c6e3f89399fc11afc1f53f89c5329132da.tar.gz linux-424de9c6e3f89399fc11afc1f53f89c5329132da.tar.bz2 linux-424de9c6e3f89399fc11afc1f53f89c5329132da.zip | |
powerpc/mm/radix: Avoid flushing the PWC on every flush_tlb_range
We do that because it's used by THP pmd collapsing, so use
instead a dedicated flush function.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm/pgtable-radix.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 5cc50d47ce3f..5d05245208ee 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -804,9 +804,12 @@ pmd_t radix__pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long addre */ pmd = *pmdp; pmd_clear(pmdp); + /*FIXME!! Verify whether we need this kick below */ kick_all_cpus_sync(); - flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE); + + radix__flush_tlb_collapsed_pmd(vma->vm_mm, address); + return pmd; } |