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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-07 08:44:37 +0100 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 10:11:52 +0100 |
| commit | d257d5da39a78b32721ca84b2ba7f461f2f7ed7f (patch) | |
| tree | ac28d377688ebe13a4d38e05f4ff65ba73d8652a /arch/sparc64/kernel/ktlb.S | |
| parent | [SPARC64]: Add missing memory barriers to instruction patching functions. (diff) | |
| download | linux-d257d5da39a78b32721ca84b2ba7f461f2f7ed7f.tar.xz linux-d257d5da39a78b32721ca84b2ba7f461f2f7ed7f.zip | |
[SPARC64]: Initial sun4v TLB miss handling infrastructure.
Things are a little tricky because, unlike sun4u, we have
to:
1) do a hypervisor trap to do the TLB load.
2) do the TSB lookup calculations by hand
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/ktlb.S')
| -rw-r--r-- | arch/sparc64/kernel/ktlb.S | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/sparc64/kernel/ktlb.S b/arch/sparc64/kernel/ktlb.S index c1335432124e..2e55084a0c12 100644 --- a/arch/sparc64/kernel/ktlb.S +++ b/arch/sparc64/kernel/ktlb.S @@ -16,12 +16,16 @@ .text .align 32 - .globl kvmap_itlb kvmap_itlb: /* g6: TAG TARGET */ mov TLB_TAG_ACCESS, %g4 ldxa [%g4] ASI_IMMU, %g4 + /* sun4v_itlb_miss branches here with the missing virtual + * address already loaded into %g4 + */ +kvmap_itlb_4v: + kvmap_itlb_nonlinear: /* Catch kernel NULL pointer calls. */ sethi %hi(PAGE_SIZE), %g5 @@ -94,11 +98,15 @@ kvmap_dtlb_obp: nop .align 32 - .globl kvmap_dtlb kvmap_dtlb: /* %g6: TAG TARGET */ mov TLB_TAG_ACCESS, %g4 ldxa [%g4] ASI_DMMU, %g4 + + /* sun4v_dtlb_miss branches here with the missing virtual + * address already loaded into %g4 + */ +kvmap_dtlb_4v: brgez,pn %g4, kvmap_dtlb_nonlinear nop |