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James Hogan 2790075f08 KVM: MIPS: Drop other CPU ASIDs on guest MMU changes 
commit 91e4f1b607 upstream.

When a guest TLB entry is replaced by TLBWI or TLBWR, we only invalidate
TLB entries on the local CPU. This doesn't work correctly on an SMP host
when the guest is migrated to a different physical CPU, as it could pick
up stale TLB mappings from the last time the vCPU ran on that physical
CPU.

Therefore invalidate both user and kernel host ASIDs on other CPUs,
which will cause new ASIDs to be generated when it next runs on those
CPUs.

We're careful only to do this if the TLB entry was already valid, and
only for the kernel ASID where the virtual address it mapped is outside
of the guest user address range.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
[james.hogan@imgtec.com: Backport to 3.10..3.16]
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
History 2016-11-20 01:17:40 +00:00
..
alchemy MIPS: Replace obsolete strict_strto call with kstrto 2014-06-04 22:50:40 +02:00
ar7 MIPS: Restore init.h usage to arch/mips/ar7/time.c 2014-03-26 23:09:23 +01:00
ath79 MIPS: ath79: make bootconsole wait for both THRE and TEMT 2016-08-22 22:37:53 +01:00
bcm47xx Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-06-12 14:27:40 -07:00
bcm63xx MIPS: Use current_cpu_type() instead of c->cputype 2014-03-31 18:17:12 +02:00
boot MIPS: ZBOOT: add missing <linux/string.h> include 2014-10-05 13:41:02 -07:00
cavium-octeon MIPS: OCTEON: make get_system_type() thread-safe 2014-09-17 09:22:04 -07:00
cobalt MIPS: Cobalt: Move to 8250/16550 serial early printk driver 2013-10-29 21:24:38 +01:00
configs Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
dec Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
emma MIPS: Remove panic_timeout settings 2013-11-26 12:12:27 +01:00
fw MIPS: DEC/SNI: O32 wrapper stack switching fixes 2014-05-13 00:29:35 +02:00
include mips: copy_from_user() must zero the destination on access_ok() failure 2016-11-20 01:17:28 +00:00
jazz Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2013-03-02 07:44:16 -08:00
jz4740 ASoC: qi_lb60: Use GPIO descriptor API 2014-04-23 12:18:36 +01:00
kernel KEYS: 64-bit MIPS needs to use compat_sys_keyctl for 32-bit userspace 2016-11-20 01:16:59 +00:00
kvm KVM: MIPS: Drop other CPU ASIDs on guest MMU changes 2016-11-20 01:17:40 +00:00
lantiq Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
lasat MIPS: Lasat: Replace del_timer by del_timer_sync 2014-03-31 18:17:12 +02:00
lib MIPS: uaccess: Take EVA into account in [__]clear_user 2016-01-25 10:43:31 +00:00
loongson MIPS: Loongson-3: Add IRQF_NO_SUSPEND to Cascade irqaction 2015-05-05 11:09:31 +01:00
loongson1 MIPS: Disable MIPS16/microMIPS crap for platforms not supporting these ASEs. 2014-05-23 15:12:37 +02:00
math-emu MIPS: math-emu: Fix jalr emulation when rd == $0 2016-08-22 22:37:58 +01:00
mm MIPS: RM7000: Double locking bug in rm7k_tc_disable() 2016-11-20 01:16:56 +00:00
mti-malta MIPS: Malta: Fix IOCU disable switch read for MIPS64 2016-11-20 01:17:36 +00:00
mti-sead3 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
net bpf, mips: fix off-by-one in ctx offset allocation 2016-11-20 01:16:56 +00:00
netlogic Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
oprofile MIPS: oprofile: Fix backtrace on 64-bit kernel 2014-12-01 10:26:05 +00:00
paravirt mips: Update the email address of Geert Uytterhoeven 2014-06-02 16:34:41 +02:00
pci Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-06-09 18:10:34 -07:00
pmcs-msp71xx MIPS: MT: Remove SMTC support 2014-05-24 00:07:01 +02:00
pnx833x MIPS: PNX833x: Remove checks for CONFIG_I2C_PNX0105 2014-05-23 15:12:39 +02:00
power nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2015-05-06 10:24:18 +01:00
ralink DeviceTree for 3.16: 2014-06-04 10:02:38 -07:00
rb532 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sgi-ip22 MIPS: IP22/IP28: Improve GIO support 2014-06-04 22:50:42 +02:00
sgi-ip27 MIPS: IP27: Fix __node_distances undefined error 2014-12-01 10:26:04 +00:00
sgi-ip32 MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
sibyte MIPS: SMP: Remove plat_smp_ops cpus_done method. 2014-05-27 11:06:42 +02:00
sni MIPS: Cleanup CP0 PRId and CP1 FPIR register access masks 2013-09-18 20:25:19 +02:00
txx9 MIPS: Replace calls to obsolete strict_strto call with kstrto* equivalents. 2014-06-04 22:50:41 +02:00
vr41xx MIPS: Idle: Consolidate all declarations in <asm/idle.h>. 2013-05-22 01:34:27 +02:00
Kbuild MIPS: net: Add BPF JIT 2014-05-30 16:10:20 +02:00
Kbuild.platforms MIPS: Enable build for new system 'paravirt' 2014-06-02 12:34:20 +02:00
Kconfig MIPS: Lasat: Fix build error if CRC32 is not enabled. 2014-06-26 14:43:01 +01:00
Kconfig.debug MIPS: MT: Remove SMTC support 2014-05-24 00:07:01 +02:00
Makefile Merge branch '3.15-fixes' into mips-for-linux-next 2014-06-04 22:53:02 +02:00