Nicholas Piggin 6ffe2c6e6d KVM: PPC: Book3S HV P9: Reduce irq_work vs guest decrementer races ...

irq_work's use of the DEC SPR is racy with guest<->host switch and guest
entry which flips the DEC interrupt to guest, which could lose a host
work interrupt.

This patch closes one race, and attempts to comment another class of
races.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210528090752.3542186-11-npiggin@gmail.com

2021-06-10 22:12:13 +10:00

..

asm

KVM: PPC: Book3S HV P9: Reduce irq_work vs guest decrementer races

2021-06-10 22:12:13 +10:00

uapi/asm

powerpc: fix EDEADLOCK redefinition error in uapi/asm/errno.h

2021-04-17 10:40:51 +10:00