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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-06-17 17:51:10 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-24 16:06:56 +0200 |
| commit | 9d1988ca87dd90ecf80a0601c7fd13071fbb1a83 (patch) | |
| tree | efef71434955ee8cfe2edd8414fde31434040d5f /arch/powerpc/kernel/interrupt_64.S | |
| parent | powerpc/64: interrupt soft-enable race fix (diff) | |
| download | linux-9d1988ca87dd90ecf80a0601c7fd13071fbb1a83.tar.xz linux-9d1988ca87dd90ecf80a0601c7fd13071fbb1a83.zip | |
powerpc/64: treat low kernel text as irqs soft-masked
Treat code below __end_soft_masked as soft-masked for the purpose
of alternate return. 64s already mostly does this for scv entry.
This will be used to exit from interrupts without disabling MSR[EE].
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210617155116.2167984-12-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kernel/interrupt_64.S')
| -rw-r--r-- | arch/powerpc/kernel/interrupt_64.S | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index ab6b99609d0e..33ee83791487 100644 --- a/arch/powerpc/kernel/interrupt_64.S +++ b/arch/powerpc/kernel/interrupt_64.S @@ -632,4 +632,8 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS) interrupt_return_macro srr #ifdef CONFIG_PPC_BOOK3S interrupt_return_macro hsrr -#endif +#endif /* CONFIG_PPC_BOOK3S */ + + .globl __end_soft_masked +__end_soft_masked: +DEFINE_FIXED_SYMBOL(__end_soft_masked) |