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authorDavid S. Miller <davem@davemloft.net>2011-08-05 00:53:57 -0700
committerDavid S. Miller <davem@davemloft.net>2011-08-05 00:53:57 -0700
commit9076d0e7e02b98f7a65df10d1956326c8d8ba61a (patch)
treeef7d3b694a7365ad8be871c2e892c7454c4b31c2 /arch/sparc/kernel
parenta61b582954183e93a3dc3a5cf6bfd2e2c3b40aba (diff)
sparc: Access kernel TSB using physical addressing when possible.
On sun4v this is basically required since we point the hypervisor and the TSB walking hardware at these tables using physical addressing too. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel')
-rw-r--r--arch/sparc/kernel/ktlb.S24
-rw-r--r--arch/sparc/kernel/vmlinux.lds.S10
2 files changed, 22 insertions, 12 deletions
diff --git a/arch/sparc/kernel/ktlb.S b/arch/sparc/kernel/ktlb.S
index 1d361477d7d6..79f310364849 100644
--- a/arch/sparc/kernel/ktlb.S
+++ b/arch/sparc/kernel/ktlb.S
@@ -47,16 +47,16 @@ kvmap_itlb_tsb_miss:
kvmap_itlb_vmalloc_addr:
KERN_PGTABLE_WALK(%g4, %g5, %g2, kvmap_itlb_longpath)
- KTSB_LOCK_TAG(%g1, %g2, %g7)
+ TSB_LOCK_TAG(%g1, %g2, %g7)
/* Load and check PTE. */
ldxa [%g5] ASI_PHYS_USE_EC, %g5
mov 1, %g7
sllx %g7, TSB_TAG_INVALID_BIT, %g7
brgez,a,pn %g5, kvmap_itlb_longpath
- KTSB_STORE(%g1, %g7)
+ TSB_STORE(%g1, %g7)
- KTSB_WRITE(%g1, %g5, %g6)
+ TSB_WRITE(%g1, %g5, %g6)
/* fallthrough to TLB load */
@@ -102,9 +102,9 @@ kvmap_itlb_longpath:
kvmap_itlb_obp:
OBP_TRANS_LOOKUP(%g4, %g5, %g2, %g3, kvmap_itlb_longpath)
- KTSB_LOCK_TAG(%g1, %g2, %g7)
+ TSB_LOCK_TAG(%g1, %g2, %g7)
- KTSB_WRITE(%g1, %g5, %g6)
+ TSB_WRITE(%g1, %g5, %g6)
ba,pt %xcc, kvmap_itlb_load
nop
@@ -112,17 +112,17 @@ kvmap_itlb_obp:
kvmap_dtlb_obp:
OBP_TRANS_LOOKUP(%g4, %g5, %g2, %g3, kvmap_dtlb_longpath)
- KTSB_LOCK_TAG(%g1, %g2, %g7)
+ TSB_LOCK_TAG(%g1, %g2, %g7)
- KTSB_WRITE(%g1, %g5, %g6)
+ TSB_WRITE(%g1, %g5, %g6)
ba,pt %xcc, kvmap_dtlb_load
nop
.align 32
kvmap_dtlb_tsb4m_load:
- KTSB_LOCK_TAG(%g1, %g2, %g7)
- KTSB_WRITE(%g1, %g5, %g6)
+ TSB_LOCK_TAG(%g1, %g2, %g7)
+ TSB_WRITE(%g1, %g5, %g6)
ba,pt %xcc, kvmap_dtlb_load
nop
@@ -222,16 +222,16 @@ kvmap_linear_patch:
kvmap_dtlb_vmalloc_addr:
KERN_PGTABLE_WALK(%g4, %g5, %g2, kvmap_dtlb_longpath)
- KTSB_LOCK_TAG(%g1, %g2, %g7)
+ TSB_LOCK_TAG(%g1, %g2, %g7)
/* Load and check PTE. */
ldxa [%g5] ASI_PHYS_USE_EC, %g5
mov 1, %g7
sllx %g7, TSB_TAG_INVALID_BIT, %g7
brgez,a,pn %g5, kvmap_dtlb_longpath
- KTSB_STORE(%g1, %g7)
+ TSB_STORE(%g1, %g7)
- KTSB_WRITE(%g1, %g5, %g6)
+ TSB_WRITE(%g1, %g5, %g6)
/* fallthrough to TLB load */
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 94a954892d3f..0e1605697b49 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -107,6 +107,16 @@ SECTIONS
*(.sun4v_2insn_patch)
__sun4v_2insn_patch_end = .;
}
+ .swapper_tsb_phys_patch : {
+ __swapper_tsb_phys_patch = .;
+ *(.swapper_tsb_phys_patch)
+ __swapper_tsb_phys_patch_end = .;
+ }
+ .swapper_4m_tsb_phys_patch : {
+ __swapper_4m_tsb_phys_patch = .;
+ *(.swapper_4m_tsb_phys_patch)
+ __swapper_4m_tsb_phys_patch_end = .;
+ }
.popc_3insn_patch : {
__popc_3insn_patch = .;
*(.popc_3insn_patch)