Aneesh Kumar K.V ae11e9fddd powerpc/mm: Fixup tlbie vs mtpidr/mtlpidr ordering issue on POWER9 ... commit 047e6575ae upstream. On POWER9, under some circumstances, a broadcast TLB invalidation will fail to invalidate the ERAT cache on some threads when there are parallel mtpidr/mtlpidr happening on other threads of the same core. This can cause stores to continue to go to a page after it's unmapped. The workaround is to force an ERAT flush using PID=0 or LPID=0 tlbie flush. This additional TLB flush will cause the ERAT cache invalidation. Since we are using PID=0 or LPID=0, we don't get filtered out by the TLB snoop filtering logic. We need to still follow this up with another tlbie to take care of store vs tlbie ordering issue explained in commit: a5d4b5891c ("powerpc/mm: Fixup tlbie vs store ordering issue on POWER9"). The presence of ERAT cache implies we can still get new stores and they may miss store queue marking flush. Cc: stable@vger.kernel.org # v4.14 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190924035254.24612-3-aneesh.kumar@linux.ibm.com [sandipan: Backported to v4.14] Signed-off-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-11-10 11:25:42 +01:00
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alpha	alpha: Fix Eiger NR_IRQS to 128	2019-02-20 10:20:53 +01:00
arc	ARC: hide unused function unw_hdr_alloc	2019-07-21 09:04:41 +02:00
arm	ARM: 8926/1: v7m: remove register save to stack before svc	2019-11-10 11:25:16 +01:00
arm64	arm64: dts: Fix gpio to pinmux mapping	2019-11-10 11:25:04 +01:00
blackfin
c6x
cris
frv
h8300	h8300: use cc-cross-prefix instead of hardcoding h8300-unknown-linux-	2019-04-05 22:31:25 +02:00
hexagon
ia64	ia64:unwind: fix double free for mod->arch.init_unw_table	2019-10-05 12:47:48 +02:00
m32r
m68k	m68k: Add -ffreestanding to CFLAGS	2019-03-23 14:35:21 +01:00
metag
microblaze
mips	MIPS: bmips: mark exception vectors as char arrays	2019-11-10 11:25:18 +01:00
mn10300
nios2
openrisc
parisc	parisc: Fix vmap memory leak in ioremap()/iounmap()	2019-10-29 09:17:40 +01:00
powerpc	powerpc/mm: Fixup tlbie vs mtpidr/mtlpidr ordering issue on POWER9	2019-11-10 11:25:42 +01:00
s390	s390/idle: fix cpu idle time calculation	2019-11-06 12:43:35 +01:00
score
sh	sh: kernel: hw_breakpoint: Fix missing break in switch statement	2019-08-25 10:50:01 +02:00
sparc	bpf: get rid of pure_initcall dependency to enable jits	2019-08-25 10:50:02 +02:00
tile
um	um: Silence lockdep complaint about mmap_sem	2019-07-31 07:28:53 +02:00
unicore32
x86	perf/x86/amd: Change/fix NMI latency mitigation to use a timestamp	2019-11-06 12:43:16 +01:00
xtensa	xtensa: drop EXPORT_SYMBOL for outs*/ins*	2019-10-29 09:17:40 +01:00
.gitignore
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