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| author | Justin Hibbits <jhibbits@FreeBSD.org> | 2019-03-02 20:59:18 +0000 |
|---|---|---|
| committer | Justin Hibbits <jhibbits@FreeBSD.org> | 2019-03-02 20:59:18 +0000 |
| commit | 5b4c63b781ce9294eead6a9e08339b7125a45a1f (patch) | |
| tree | 2c9487fc3cdac835e42a4c7571c52be12dfe30af /sys/powerpc/booke/locore.S | |
| parent | d4249d08d980df9425b62bcb11e960c2132fac36 (diff) | |
| download | src-5b4c63b781ce9294eead6a9e08339b7125a45a1f.tar.gz src-5b4c63b781ce9294eead6a9e08339b7125a45a1f.zip | |
powerpc/booke: Depessimize MAS register updates even more
Remove isyncs between MAS register updates in the TLB miss handler, since
it's only needed before the TLB update instructions.
Notes
Notes:
svn path=/head/; revision=344729
Diffstat (limited to 'sys/powerpc/booke/locore.S')
| -rw-r--r-- | sys/powerpc/booke/locore.S | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/powerpc/booke/locore.S b/sys/powerpc/booke/locore.S index c0aa309bb713..0eecc1f3c9c3 100644 --- a/sys/powerpc/booke/locore.S +++ b/sys/powerpc/booke/locore.S @@ -252,6 +252,7 @@ __start: isync bl zero_mas7 bl zero_mas8 + isync tlbwe isync msync @@ -505,6 +506,7 @@ bp_kernload: isync bl zero_mas7 bl zero_mas8 + isync tlbwe isync msync @@ -695,6 +697,7 @@ tlb1_temp_mapping_as1: bl zero_mas7 bl zero_mas8 mtlr %r3 + isync tlbwe isync msync @@ -742,7 +745,6 @@ zero_mas7: li %r20, 0 mtspr SPR_MAS7, %r20 - isync 1: blr @@ -759,7 +761,6 @@ zero_mas8: 1: li %r20, 0 mtspr SPR_MAS8, %r20 - isync blr #endif |