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| author | James Morse <james.morse@arm.com> | 2017-11-02 15:12:40 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-11-02 18:55:41 +0300 |
| commit | 746647c75afb5a1706426c2563ff02884a15530d (patch) | |
| tree | 863d92b61cfd92f82f5c66f306d127b83e081c61 /arch/arm64/include/asm/assembler.h | |
| parent | b55a5a1b0a7d4f51b6c8eec0d4d78ace8f5fa2b3 (diff) | |
| download | linux-746647c75afb5a1706426c2563ff02884a15530d.tar.xz | |
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.h | 9 |
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 |