diff options
| author | David S. Miller <davem@davemloft.net> | 2008-11-24 00:55:29 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-04 12:17:02 -0500 |
| commit | b4f4372f96e0573d752d9e45beda02fabf716cc8 (patch) | |
| tree | 641798dfe78c1407908c68b64427cd55cdc18b34 /arch/sparc64/kernel/head.S | |
| parent | c6afec5e4d323e7b88a7d6e291a5aa021a8fcb7d (diff) | |
sparc64: Make %pil level 15 a pseudo-NMI.
So that we can profile code even in a local_irq_disable() section,
only write 14 (instead of 15) into the %pil register to disable IRQs.
This allows PIL level 15 to serve as a pseudo NMI.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/head.S')
| -rw-r--r-- | arch/sparc64/kernel/head.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S index 353226fa0239..45830c35fc6d 100644 --- a/arch/sparc64/kernel/head.S +++ b/arch/sparc64/kernel/head.S | |||
| @@ -706,7 +706,7 @@ setup_trap_table: | |||
| 706 | andn %l0, PSTATE_IE, %o1 | 706 | andn %l0, PSTATE_IE, %o1 |
| 707 | wrpr %o1, 0x0, %pstate | 707 | wrpr %o1, 0x0, %pstate |
| 708 | rdpr %pil, %l1 | 708 | rdpr %pil, %l1 |
| 709 | wrpr %g0, 15, %pil | 709 | wrpr %g0, PIL_NORMAL_MAX, %pil |
| 710 | 710 | ||
| 711 | /* Make the firmware call to jump over to the Linux trap table. */ | 711 | /* Make the firmware call to jump over to the Linux trap table. */ |
| 712 | sethi %hi(is_sun4v), %o0 | 712 | sethi %hi(is_sun4v), %o0 |