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authorIngo Molnar <mingo@kernel.org>2015-05-08 13:33:33 +0200
committerIngo Molnar <mingo@kernel.org>2015-05-08 13:33:33 +0200
commit7ae383be81781c5e1347f71c3eb0d53ce5188200 (patch)
treed2dfedb78cf4ee2bc9cc460af3be106b08e01050 /arch/arm64/mm/proc-macros.S
parent2a4e90b18c256d52a7f3f77d58114f6d4e4a7f9f (diff)
parent3e0283a53f7d2f2dae7bc4aa7f3104cb5988018f (diff)
Merge branch 'linus' into x86/asm, before applying dependent patch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/mm/proc-macros.S')
-rw-r--r--arch/arm64/mm/proc-macros.S10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/mm/proc-macros.S b/arch/arm64/mm/proc-macros.S
index 005d29e2977d..4c4d93c4bf65 100644
--- a/arch/arm64/mm/proc-macros.S
+++ b/arch/arm64/mm/proc-macros.S
@@ -52,3 +52,13 @@
mov \reg, #4 // bytes per word
lsl \reg, \reg, \tmp // actual cache line size
.endm
+
+/*
+ * tcr_set_idmap_t0sz - update TCR.T0SZ so that we can load the ID map
+ */
+ .macro tcr_set_idmap_t0sz, valreg, tmpreg
+#ifndef CONFIG_ARM64_VA_BITS_48
+ ldr_l \tmpreg, idmap_t0sz
+ bfi \valreg, \tmpreg, #TCR_T0SZ_OFFSET, #TCR_TxSZ_WIDTH
+#endif
+ .endm