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| author | Thomas Gleixner <tglx@linutronix.de> | 2021-02-10 00:40:51 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-02-10 23:34:16 +0100 |
| commit | 624db9eabc74597f682c0651047a25b54f7260a1 (patch) | |
| tree | ff8d74fd46fa59d8424244026fdda562fcb21128 /arch/x86/Kconfig | |
| parent | x86/softirq: Remove indirection in do_softirq_own_stack() (diff) | |
| download | linux-624db9eabc74597f682c0651047a25b54f7260a1.tar.xz linux-624db9eabc74597f682c0651047a25b54f7260a1.zip | |
x86: Select CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK
Now that all invocations of irq_exit_rcu() happen on the irq stack, turn on
CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK which causes the core code to invoke
__do_softirq() directly without going through do_softirq_own_stack().
That means do_softirq_own_stack() is only invoked from task context which
means it can't be on the irq stack. Remove the conditional from
run_softirq_on_irqstack_cond() and rename the function accordingly.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210210002513.068033456@linutronix.de
Diffstat (limited to 'arch/x86/Kconfig')
| -rw-r--r-- | arch/x86/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 21f851179ff0..e17ce871bb19 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -187,6 +187,7 @@ config X86 select HAVE_HW_BREAKPOINT select HAVE_IDE select HAVE_IOREMAP_PROT + select HAVE_IRQ_EXIT_ON_IRQ_STACK if X86_64 select HAVE_IRQ_TIME_ACCOUNTING select HAVE_KERNEL_BZIP2 select HAVE_KERNEL_GZIP |