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authorJames Morse <james.morse@arm.com>2017-11-02 12:12:40 +0000
committerWill Deacon <will.deacon@arm.com>2017-11-02 15:55:41 +0000
commit746647c75afb5a1706426c2563ff02884a15530d (patch)
tree863d92b61cfd92f82f5c66f306d127b83e081c61 /arch/arm64/include/asm/assembler.h
parentb55a5a1b0a7d4f51b6c8eec0d4d78ace8f5fa2b3 (diff)
arm64: entry.S convert el0_sync
el0_sync also unmasks exceptions on a case-by-case basis, debug exceptions are enabled, unless this was a debug exception. Irqs are unmasked for some exception types but not for others. el0_dbg should run with everything masked to prevent us taking a debug exception from do_debug_exception. For the other cases we can unmask everything. This changes the behaviour of fpsimd_{acc,exc} and el0_inv which previously ran with irqs masked. This patch removed the last user of enable_dbg_and_irq, remove it. Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Julien Thierry <julien.thierry@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/assembler.h')
-rw-r--r--arch/arm64/include/asm/assembler.h9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h
index 1886b8b44672..90d1f01d602f 100644
--- a/arch/arm64/include/asm/assembler.h
+++ b/arch/arm64/include/asm/assembler.h
@@ -98,15 +98,6 @@
.endm
/*
- * Enable both debug exceptions and interrupts. This is likely to be
- * faster than two daifclr operations, since writes to this register
- * are self-synchronising.
- */
- .macro enable_dbg_and_irq
- msr daifclr, #(8 | 2)
- .endm
-
-/*
* SMP data memory barrier
*/
.macro smp_dmb, opt