diff options
| author |   Magnus Lindholm <linmag7@gmail.com> | 2026-07-06 18:56:44 +0200 |
|---|---|---|
| committer | Magnus Lindholm <linmag7@gmail.com> | 2026-07-19 13:15:55 +0200 |
| commit | 05dc12d664f54cd23dad1e13c2fadbbd73f08450 (patch) | |
| tree | b020f77205f597e7c93756cc95cb88fc907db560 | |
| parent | alpha: add ARCH_STACKWALK-based stacktrace support (diff) | |
alpha: make irqflags helpers operate on IPL state
Alpha interrupt masking is controlled by the PAL IPL value, not by the
full processor status word. Make arch_local_save_flags() return the
current IPL directly, and make arch_local_irq_restore() and
arch_irqs_disabled_flags() treat their argument as IPL state.
Mask the low IPL bits in the restore and test helpers so callers which
still pass a saved PS value continue to behave as expected.
This prepares the irqflags helpers for lockdep IRQ-state tracking, where
the saved flags value is used to determine whether hard IRQs are enabled
or disabled.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Tested-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>
Link: https://lore.kernel.org/r/20260706170019.2941459-4-linmag7@gmail.com
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>
| -rw-r--r-- | arch/alpha/include/asm/irqflags.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/alpha/include/asm/irqflags.h b/arch/alpha/include/asm/irqflags.h index 9f25d4e0d37e..f207544f52de 100644 --- a/arch/alpha/include/asm/irqflags.h +++ b/arch/alpha/include/asm/irqflags.h @@ -26,7 +26,7 @@ extern int __min_ipl; static inline unsigned long arch_local_save_flags(void) { - return rdps(); + return getipl(); } static inline void arch_local_irq_disable(void) @@ -51,13 +51,13 @@ static inline void arch_local_irq_enable(void) static inline void arch_local_irq_restore(unsigned long flags) { barrier(); - setipl(flags); + setipl(flags & 7); barrier(); } static inline bool arch_irqs_disabled_flags(unsigned long flags) { - return flags == IPL_MAX; + return (flags & 7) == IPL_MAX; } static inline bool arch_irqs_disabled(void) |