diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2007-03-16 17:20:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-03-16 17:20:28 -0700 |
| commit | d1acb4210aaa9bdc413d276dbc96d0a23ada97ba (patch) | |
| tree | b0ca2efd2b34e319aeb09c451d89fd1c9dc47ba3 /arch/sparc64/kernel | |
| parent | db98e0b434a6265c451ffe94ec0a29b8d0aaf587 (diff) | |
| download | blackbird-obmc-linux-d1acb4210aaa9bdc413d276dbc96d0a23ada97ba.tar.gz blackbird-obmc-linux-d1acb4210aaa9bdc413d276dbc96d0a23ada97ba.zip | |
[SPARC64]: Get DEBUG_PAGEALLOC working again.
We have to make sure to use base-pagesize TLB entries even during the
early transition period where we need TLB miss handling but don't have
the kernel page tables setup yet for the linear region.
Also, it is necessary therefore to not use the 4MB TSB for these
translations, and instead use the normal kernel TSB. This allows us
to also get rid of the 4MB tsb for debug builds which shrinks the
kernel a little bit.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel')
| -rw-r--r-- | arch/sparc64/kernel/ktlb.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/ktlb.S b/arch/sparc64/kernel/ktlb.S index e492db845ea3..d4024ac0d619 100644 --- a/arch/sparc64/kernel/ktlb.S +++ b/arch/sparc64/kernel/ktlb.S @@ -138,9 +138,15 @@ kvmap_dtlb_4v: brgez,pn %g4, kvmap_dtlb_nonlinear nop +#ifdef CONFIG_DEBUG_PAGEALLOC + /* Index through the base page size TSB even for linear + * mappings when using page allocation debugging. + */ + KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load) +#else /* Correct TAG_TARGET is already in %g6, check 4mb TSB. */ KERN_TSB4M_LOOKUP_TL1(%g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load) - +#endif /* TSB entry address left in %g1, lookup linear PTE. * Must preserve %g1 and %g6 (TAG). */ |
