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(parent: 21c84d9) | patch
powerpc/64: treat low kernel text as irqs soft-masked
authorNicholas Piggin <npiggin@gmail.com>
Thu, 17 Jun 2021 15:51:10 +0000 (01:51 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Thu, 24 Jun 2021 14:06:56 +0000 (00:06 +1000)
commitc62ab722c7667f0f8bc4326f0b5b5388cbe87851
treeefef71434955ee8cfe2edd8414fde31434040d5ftree | snapshot
parent21c84d9692a8787aa96c54b346af3dfeadcd3bc0commit | diff
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
arch/powerpc/include/asm/interrupt.h diff | blob | history
arch/powerpc/kernel/exceptions-64e.S diff | blob | history
arch/powerpc/kernel/exceptions-64s.S diff | blob | history
arch/powerpc/kernel/interrupt_64.S diff | blob | history
Linux Kernel Source Tree.