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| author | Thomas Gleixner <tglx@linutronix.de> | 2023-06-26 12:05:49 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2023-06-26 12:05:49 +0300 |
| commit | f121ab7f4ac32ed2aa51035534926f9507a8308b (patch) | |
| tree | d17cd6dc29b64e6d681caa70424f3beacce21f14 /arch/m68k/kernel/signal.c | |
| parent | 721255b9826bd11c7a38b585905fc2dd0fb94e52 (diff) | |
| parent | a82f3119d543406ed5b242deabf83cdecb9fe523 (diff) | |
| download | linux-f121ab7f4ac32ed2aa51035534926f9507a8308b.tar.xz | |
Merge tag 'irqchip-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core
Pull irqchip updates from Marc Zyngier:
- A number of Loogson/Loogarch fixes
- Allow the core code to retrigger an interrupt that has
fired while the same interrupt is being handled on another
CPU, papering over a GICv3 architecture issue
- Work around an integration problem on ASR8601, where the CPU
numbering isn't representable in the GIC implementation...
- Add some missing interrupt to the STM32 irqchip
- A bunch of warning squashing triggered by W=1 builds
Link: https://lore.kernel.org/r/20230623224345.3577134-1-maz@kernel.org
Diffstat (limited to 'arch/m68k/kernel/signal.c')
| -rw-r--r-- | arch/m68k/kernel/signal.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c index b9f6908a31bc..ba468b5f3f0b 100644 --- a/arch/m68k/kernel/signal.c +++ b/arch/m68k/kernel/signal.c @@ -858,11 +858,17 @@ static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs * } static inline void __user * -get_sigframe(struct ksignal *ksig, size_t frame_size) +get_sigframe(struct ksignal *ksig, struct pt_regs *tregs, size_t frame_size) { unsigned long usp = sigsp(rdusp(), ksig); + unsigned long gap = 0; - return (void __user *)((usp - frame_size) & -8UL); + if (CPU_IS_020_OR_030 && tregs->format == 0xb) { + /* USP is unreliable so use worst-case value */ + gap = 256; + } + + return (void __user *)((usp - gap - frame_size) & -8UL); } static int setup_frame(struct ksignal *ksig, sigset_t *set, @@ -880,7 +886,7 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set, return -EFAULT; } - frame = get_sigframe(ksig, sizeof(*frame) + fsize); + frame = get_sigframe(ksig, tregs, sizeof(*frame) + fsize); if (fsize) err |= copy_to_user (frame + 1, regs + 1, fsize); @@ -952,7 +958,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, return -EFAULT; } - frame = get_sigframe(ksig, sizeof(*frame)); + frame = get_sigframe(ksig, tregs, sizeof(*frame)); if (fsize) err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize); |