[PATCH 0/8] powerpc: fast interrupt exit bug and misc fixes
Nicholas Piggin
npiggin at gmail.com
Mon Jun 28 17:49:24 AEST 2021
This is a bunch of fixes for powerpc next, mostly a nasty hole in fast
interrupt exit code found by Sachin and some other bits along the way
while looking at it.
So far this survives about 5 hours of stress testing with a workload
that would trigger it in a few seconds (guest 128 vcpus running kernel
compile loops with perf record -ag running in the background).
Thanks,
Nick
Nicholas Piggin (8):
powerpc/64e: fix CONFIG_RELOCATABLE build
powerpc/64e: remove implicit soft-masking and interrupt exit restart
logic
powerpc/64s: add a table of implicit soft-masked addresses
powerpc/64s/interrupt: preserve regs->softe for NMI interrupts
powerpc/64: enable MSR[EE] in irq replay pt_regs
powerpc/64/interrupts: add missing kprobe annotations on interrupt
exit symbols
powerpc/64s/interrupt: clean up interrupt return labels
powerpc/64s: move ret_from_fork etc above __end_soft_masked
arch/powerpc/include/asm/interrupt.h | 41 ++++++++++---
arch/powerpc/include/asm/ppc_asm.h | 7 +++
arch/powerpc/kernel/exceptions-64e.S | 23 +++----
arch/powerpc/kernel/exceptions-64s.S | 55 ++++++++++++++---
arch/powerpc/kernel/interrupt_64.S | 90 ++++++++++++++++++----------
arch/powerpc/kernel/irq.c | 1 +
arch/powerpc/kernel/vmlinux.lds.S | 9 +++
arch/powerpc/lib/restart_table.c | 26 ++++++++
8 files changed, 194 insertions(+), 58 deletions(-)
--
2.23.0
More information about the Linuxppc-dev
mailing list