diff options
| author |   Nicholas Piggin <npiggin@gmail.com> | 2021-06-30 17:46:18 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-06-30 22:21:20 +1000 |
| commit | 2b43dd7653cca47d297756980846ebbfe8887fa1 (patch) | |
| tree | 13dd6b66ea7376a0d2f6fb172b897d6ce55f3694 /arch | |
| parent | powerpc/64s/interrupt: preserve regs->softe for NMI interrupts (diff) | |
| download | linux-dev-2b43dd7653cca47d297756980846ebbfe8887fa1.tar.xz linux-dev-2b43dd7653cca47d297756980846ebbfe8887fa1.zip | |
powerpc/64: enable MSR[EE] in irq replay pt_regs
Similar to commit 2b48e96be2f9f ("powerpc/64: fix irq replay
pt_regs->softe value"), enable MSR_EE in pt_regs->msr. This makes the
regs look more normal. It also allows some extra debug checks to be
added to interrupt handler entry.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210630074621.2109197-7-npiggin@gmail.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/interrupt.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/interrupt.h b/arch/powerpc/include/asm/interrupt.h index 789311d1e283..d4bdf7d274ac 100644 --- a/arch/powerpc/include/asm/interrupt.h +++ b/arch/powerpc/include/asm/interrupt.h @@ -173,6 +173,8 @@ static inline void interrupt_enter_prepare(struct pt_regs *regs, struct interrup BUG_ON(search_kernel_restart_table(regs->nip)); #endif } + if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) + BUG_ON(!arch_irq_disabled_regs(regs) && !(regs->msr & MSR_EE)); #endif booke_restore_dbcr0(); @@ -268,6 +270,8 @@ static inline void interrupt_nmi_enter_prepare(struct pt_regs *regs, struct inte // arch_irq_disabled_regs(regs) behaves as expected. regs->softe = IRQS_ALL_DISABLED; } + if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) + BUG_ON(!arch_irq_disabled_regs(regs) && !(regs->msr & MSR_EE)); /* Don't do any per-CPU operations until interrupt state is fixed */ diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 8428caf3194e..91e63eac4e8f 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -121,6 +121,7 @@ void replay_soft_interrupts(void) ppc_save_regs(®s); regs.softe = IRQS_ENABLED; + regs.msr |= MSR_EE; again: if (IS_ENABLED(CONFIG_PPC_IRQ_SOFT_MASK_DEBUG)) |