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| author | Chris Metcalf <cmetcalf@tilera.com> | 2013-07-23 17:32:04 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-07-31 11:51:19 -0400 |
| commit | dd78bc11fb2050b6a3990d0421feca4c68ca4335 (patch) | |
| tree | 7147fe5e0b3815443eea608d3dd0950ba53bb47d /arch/tile/kernel | |
| parent | 7d937719e3c5c6c9ad00584f6b62230d2ef7f9f1 (diff) | |
| download | op-kernel-dev-dd78bc11fb2050b6a3990d0421feca4c68ca4335.zip op-kernel-dev-dd78bc11fb2050b6a3990d0421feca4c68ca4335.tar.gz | |
tile: convert uses of "inv" to "finv"
The "inv" (invalidate) instruction is generally less safe than "finv"
(flush and invalidate), as it will drop dirty data from the cache.
It turns out we have almost no need for "inv" (other than for the
older 32-bit architecture in some limited cases), so convert to
"finv" where possible and delete the extra "inv" infrastructure.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel')
| -rw-r--r-- | arch/tile/kernel/head_32.S | 2 | ||||
| -rw-r--r-- | arch/tile/kernel/head_64.S | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/tile/kernel/head_32.S b/arch/tile/kernel/head_32.S index ac11530..80cd407 100644 --- a/arch/tile/kernel/head_32.S +++ b/arch/tile/kernel/head_32.S @@ -64,7 +64,7 @@ ENTRY(_start) auli r0, r0, ha16(swapper_pg_dir - PAGE_OFFSET) } { - inv r6 + finv r6 move r1, zero /* high 32 bits of CPA is zero */ } { diff --git a/arch/tile/kernel/head_64.S b/arch/tile/kernel/head_64.S index 6093964..e23e5f7 100644 --- a/arch/tile/kernel/head_64.S +++ b/arch/tile/kernel/head_64.S @@ -77,7 +77,7 @@ ENTRY(_start) { /* After initializing swapper_pgprot, HV_PTE_GLOBAL is set. */ bfextu r7, r1, HV_PTE_INDEX_GLOBAL, HV_PTE_INDEX_GLOBAL - inv r4 + finv r4 } bnez r7, .Lno_write { |
