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authorDavid S. Miller <davem@sunset.davemloft.net>2007-12-13 06:13:38 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2007-12-13 06:13:38 -0800
commit8f361453d8e9a67c85b2cf9b93c642c2d8fe0462 (patch)
tree79c021106e2c3f708d085285680a29bb665c0b37 /arch/sparc64/kernel/entry.S
parentda8cadb31b82c9d41fc593c8deab6aa20b162d6b (diff)
downloadop-kernel-dev-8f361453d8e9a67c85b2cf9b93c642c2d8fe0462.zip
op-kernel-dev-8f361453d8e9a67c85b2cf9b93c642c2d8fe0462.tar.gz
[SPARC64]: Fix two kernel linear mapping setup bugs.
This was caught and identified by Greg Onufer. Since we setup the 256M/4M bitmap table after taking over the trap table, it's possible for some 4M mapping to get loaded in the TLB beforhand which later will be 256M mappings. This can cause illegal TLB multiple-match conditions. Fix this by setting up the bitmap before we take over the trap table. Next, __flush_tlb_all() was not doing anything on hypervisor platforms. Fix by adding sun4v_mmu_demap_all() and calling it. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/entry.S')
-rw-r--r--arch/sparc64/kernel/entry.S12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index c9b0d7a..ea257e8 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -2593,3 +2593,15 @@ sun4v_mmustat_info:
retl
nop
.size sun4v_mmustat_info, .-sun4v_mmustat_info
+
+ .globl sun4v_mmu_demap_all
+ .type sun4v_mmu_demap_all,#function
+sun4v_mmu_demap_all:
+ clr %o0
+ clr %o1
+ mov HV_MMU_ALL, %o2
+ mov HV_FAST_MMU_DEMAP_ALL, %o5
+ ta HV_FAST_TRAP
+ retl
+ nop
+ .size sun4v_mmu_demap_all, .-sun4v_mmu_demap_all
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