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linux/arch/mips
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James Hogan f3a8603f09 KVM: MIPS/TLB: Fix off-by-one in TLB invalidate 
kvm_mips_host_tlb_inv() uses the TLBP instruction to probe the host TLB
for an entry matching the given guest virtual address, and determines
whether a match was found based on whether CP0_Index > 0. This is
technically incorrect as an index of 0 (with the high bit clear) is a
perfectly valid TLB index.

This is harmless at the moment due to the use of at least 1 wired TLB
entry for the KVM commpage, however we will soon be ridding ourselves of
that particular wired entry so lets fix the condition in case the entry
needing invalidation does land at TLB index 0.

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
2017-02-03 15:20:53 +00:00
..
alchemy clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
ar7 MIPS: ar7: use gpiochip data pointer 2016-02-19 09:51:43 +01:00
ath25 genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
ath79 MIPS: ath79: Fix test for error return of clk_register_fixed_factor(). 2016-09-13 14:13:26 +02:00
bcm47xx MIPS: BCM47xx: Make serial explicitly non-modular 2016-10-04 16:13:57 +02:00
bcm63xx MIPS: BCM63xx: Let clk_disable() return immediately if clk is NULL 2016-10-04 16:13:57 +02:00
bmips MIPS: BMIPS: Support APPENDED_DTB 2016-10-06 17:31:02 +02:00
boot RTC for 4.10 2016-12-18 18:18:03 -08:00
cavium-octeon clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
cobalt MIPS: Cobalt: Fix typo 2016-08-03 08:16:30 +02:00
configs MIPS: generic: Convert SEAD-3 to a generic board 2016-10-06 18:04:20 +02:00
dec Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
emma
fw MIPS: Fix misspellings in comments. 2016-04-03 12:32:09 +02:00
generic MIPS: generic: Fix KASLR for generic kernel. 2016-11-04 00:32:06 +01:00
include KVM: MIPS: Add fast path TLB refill handler 2017-02-03 15:20:53 +00:00
jazz Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
jz4740 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
kernel Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-25 14:30:04 -08:00
kvm KVM: MIPS/TLB: Fix off-by-one in TLB invalidate 2017-02-03 15:20:53 +00:00
lantiq MIPS: Lantiq: Fix mask of GPE frequency 2016-12-11 11:20:25 +01:00
lasat mips: separate extable.h, switch module.h to it 2016-10-05 18:36:18 -04:00
lib MIPS: dump_tlb: Fix printk continuations 2016-11-04 01:04:32 +01:00
loongson32 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
loongson64 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm MIPS: Export some tlbex internals for KVM to use 2017-02-03 15:19:01 +00:00
mti-malta clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
net treewide: remove redundant #include <linux/kconfig.h> 2016-10-11 15:06:33 -07:00
netlogic clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
oprofile Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-25 14:05:56 -08:00
paravirt
pci MIPS: Sanitise coherentio semantics 2016-10-06 18:01:28 +02:00
pic32 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
pistachio Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
pmcs-msp71xx MIPS: MSP71xx: Use __flush_cache_all instead of flush_cache_all. 2016-05-13 14:01:38 +02:00
pnx833x MIPS: Squash lines for simple wrapper functions 2016-10-04 16:13:57 +02:00
power
ralink MIPS: ralink: Make timer explicitly non-modular 2016-10-04 16:13:57 +02:00
rb532 MIPS: rb532: use gpiochip data pointer 2016-02-19 09:51:44 +01:00
sgi-ip22 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sgi-ip27 clocksource: Use a plain u64 instead of cycle_t 2016-12-25 11:04:12 +01:00
sgi-ip32 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sibyte Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sni char/genrtc: remove asm-generic/rtc.h from mips 2016-06-04 00:23:36 +02:00
txx9 MIPS: PCI: Reduce stack frame usage 2016-10-04 16:13:57 +02:00
vdso MIPS: VDSO: Drop duplicated -I*/-E* aflags 2016-10-11 15:07:30 +02:00
vr41xx MIPS: VR41xx: Fix typo 2016-05-28 12:35:09 +02:00
xilfpga mips: Remove unnecessary of_platform_populate with default match table 2016-06-23 15:00:29 -05:00
Kbuild MIPS: Initial implementation of a VDSO 2015-11-11 08:36:36 +01:00
Kbuild.platforms MIPS: generic: Convert SEAD-3 to a generic board 2016-10-06 18:04:20 +02:00
Kconfig Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-10-15 09:26:12 -07:00
Kconfig.debug MIPS: Remove compact branch policy Kconfig entries 2016-09-13 14:14:50 +02:00
Makefile MIPS: Fix build of compressed image 2016-11-04 00:37:15 +01:00