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| author | Will Deacon <will.deacon@arm.com> | 2012-08-24 16:21:52 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-08-25 10:15:57 +0200 |
| commit | ae3790b8a916429be5fa61da95992929e6b34d64 (patch) | |
| tree | c3fb5e0b4ef1221412a50e34999e56ea6af38df7 | |
| parent | ARM: 7501/1: decompressor: reset ttbcr for VMSA ARMv7 cores (diff) | |
| download | linux-ae3790b8a916429be5fa61da95992929e6b34d64.tar.xz linux-ae3790b8a916429be5fa61da95992929e6b34d64.zip | |
ARM: 7502/1: contextidr: avoid using bfi instruction during notifier
The bfi instruction is not available on ARMv6, so instead use an and/orr
sequence in the contextidr_notifier. This gets rid of the assembler
error:
Assembler messages:
Error: selected processor does not support ARM mode `bfi r3,r2,#0,#8'
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mm/context.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 119bc52ab93e..4e07eec1270d 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -63,10 +63,11 @@ static int contextidr_notifier(struct notifier_block *unused, unsigned long cmd, pid = task_pid_nr(thread->task) << ASID_BITS; asm volatile( " mrc p15, 0, %0, c13, c0, 1\n" - " bfi %1, %0, #0, %2\n" - " mcr p15, 0, %1, c13, c0, 1\n" + " and %0, %0, %2\n" + " orr %0, %0, %1\n" + " mcr p15, 0, %0, c13, c0, 1\n" : "=r" (contextidr), "+r" (pid) - : "I" (ASID_BITS)); + : "I" (~ASID_MASK)); isb(); return NOTIFY_OK; |