Nicholas Piggin 08685be776 powerpc/64s: fix scv entry fallback flush vs interrupt ... The L1D flush fallback functions are not recoverable vs interrupts, yet the scv entry flush runs with MSR[EE]=1. This can result in a timer (soft-NMI) or MCE or SRESET interrupt hitting here and overwriting the EXRFI save area, which ends up corrupting userspace registers for scv return. Fix this by disabling RI and EE for the scv entry fallback flush. Fixes: f79643787e ("powerpc/64s: flush L1D on kernel entry") Cc: stable@vger.kernel.org # 5.9+ which also have flush L1D patch backport Reported-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210111062408.287092-1-npiggin@gmail.com		2021-01-20 15:58:19 +11:00
..
boot	powerpc/boot: Fix build of dts/fsl	2020-12-21 22:06:09 +11:00
configs	powerpc updates for 5.11	2020-12-17 13:34:25 -08:00
crypto
include	powerpc/64s: fix scv entry fallback flush vs interrupt	2021-01-20 15:58:19 +11:00
kernel	powerpc/64s: fix scv entry fallback flush vs interrupt	2021-01-20 15:58:19 +11:00
kexec
kvm	powerpc updates for 5.11	2020-12-17 13:34:25 -08:00
lib	powerpc/64s: fix scv entry fallback flush vs interrupt	2021-01-20 15:58:19 +11:00
math-emu
mm	powerpc updates for 5.11	2020-12-17 13:34:25 -08:00
net
oprofile
perf	powerpc updates for 5.11	2020-12-17 13:34:25 -08:00
platforms	dma-mapping updates for 5.11:	2020-12-22 13:19:43 -08:00
purgatory
sysdev	powerpc/xive: Improve error reporting of OPAL calls	2020-12-11 09:53:11 +11:00
tools
xmon	powerpc/xmon: Change printk() to pr_cont()	2020-12-04 21:56:30 +11:00
Kbuild
Kconfig	dma-mapping updates for 5.11:	2020-12-22 13:19:43 -08:00
Kconfig.debug
Makefile	powerpc updates for 5.11	2020-12-17 13:34:25 -08:00
Makefile.postlink