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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-09 16:12:22 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:12:05 -0800 |
| commit | aa9143b9719c07fb6f1f6207790c9c5086ae07e7 (patch) | |
| tree | 74d56ecc53ed0542f200d6c6257c8f051095111c /include | |
| parent | 12816ab38adddc9d7e9b3315d1739655dedc7c9f (diff) | |
| download | blackbird-obmc-linux-aa9143b9719c07fb6f1f6207790c9c5086ae07e7.tar.gz blackbird-obmc-linux-aa9143b9719c07fb6f1f6207790c9c5086ae07e7.zip | |
[SPARC64]: Implement sun4v TSB miss handlers.
When we register a TSB with the hypervisor, so that it or hardware can
handle TLB misses and do the TSB walk for us, the hypervisor traps
down to these trap when it incurs a TSB miss.
Processing is simple, we load the missing virtual address and context,
and do a full page table walk.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-sparc64/ttable.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-sparc64/ttable.h b/include/asm-sparc64/ttable.h index f912f52c0c7f..972f913709a3 100644 --- a/include/asm-sparc64/ttable.h +++ b/include/asm-sparc64/ttable.h @@ -180,6 +180,26 @@ #define KPROBES_TRAP(lvl) TRAP_ARG(bad_trap, lvl) #endif +#define SUN4V_ITSB_MISS \ + mov SCRATCHPAD_CPUID, %g1; \ + ldxa [%g1] ASI_SCRATCHPAD, %g2; \ + ldxa [%g1 + %g1] ASI_SCRATCHPAD, %g1;\ + sethi %hi(trap_block), %g5; \ + sllx %g2, TRAP_BLOCK_SZ_SHIFT, %g2; \ + or %g5, %lo(trap_block), %g5; \ + ba,pt %xcc, sun4v_itsb_miss; \ + add %g5, %g2, %g5; + +#define SUN4V_DTSB_MISS \ + mov SCRATCHPAD_CPUID, %g1; \ + ldxa [%g1] ASI_SCRATCHPAD, %g2; \ + ldxa [%g1 + %g1] ASI_SCRATCHPAD, %g1;\ + sethi %hi(trap_block), %g5; \ + sllx %g2, TRAP_BLOCK_SZ_SHIFT, %g2; \ + or %g5, %lo(trap_block), %g5; \ + ba,pt %xcc, sun4v_dtsb_miss; \ + add %g5, %g2, %g5; + /* Before touching these macros, you owe it to yourself to go and * see how arch/sparc64/kernel/winfixup.S works... -DaveM * |
