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| author | Mark Rutland <mark.rutland@arm.com> | 2019-10-25 17:42:14 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-10-28 11:22:49 +0000 |
| commit | 582f95835a8fc812cd38dce0447fe9386b78913e (patch) | |
| tree | 07a404a950fae7f1d0cbb4a1a9cd0295f7e359c3 /arch/arm64/include/asm/asm-uaccess.h | |
| parent | ed3768db588291ddb5dc794daed12cc751373566 (diff) | |
| download | linux-582f95835a8fc812cd38dce0447fe9386b78913e.tar.bz2 | |
arm64: entry: convert el0_sync to C
This is largely a 1-1 conversion of asm to C, with a couple of caveats.
The el0_sync{_compat} switches explicitly handle all the EL0 debug
cases, so el0_dbg doesn't have to try to bail out for unexpected EL1
debug ESR values. This also means that an unexpected vector catch from
AArch32 is routed to el0_inv.
We *could* merge the native and compat switches, which would make the
diffstat negative, but I've tried to stay as close to the existing
assembly as possible for the moment.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
[split out of a bigger series, added nokprobes. removed irq trace
calls as the C helpers do this. renamed el0_dbg's use of FAR]
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Cc: Julien Thierry <julien.thierry.kdev@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/asm-uaccess.h')
| -rw-r--r-- | arch/arm64/include/asm/asm-uaccess.h | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/arm64/include/asm/asm-uaccess.h b/arch/arm64/include/asm/asm-uaccess.h index f74909ba29bd..a70575edae8e 100644 --- a/arch/arm64/include/asm/asm-uaccess.h +++ b/arch/arm64/include/asm/asm-uaccess.h @@ -74,14 +74,4 @@ alternative_if ARM64_ALT_PAN_NOT_UAO SET_PSTATE_PAN(0) alternative_else_nop_endif .endm - -/* - * Remove the address tag from a virtual address, if present. - */ - .macro clear_address_tag, dst, addr - tst \addr, #(1 << 55) - bic \dst, \addr, #(0xff << 56) - csel \dst, \dst, \addr, eq - .endm - #endif |