James Hogan 7ad26023ff MIPS: KVM: Fix modular KVM under QEMU ... commit 797179bc4f upstream. Copy __kvm_mips_vcpu_run() into unmapped memory, so that we can never get a TLB refill exception in it when KVM is built as a module. This was observed to happen with the host MIPS kernel running under QEMU, due to a not entirely transparent optimisation in the QEMU TLB handling where TLB entries replaced with TLBWR are copied to a separate part of the TLB array. Code in those pages continue to be executable, but those mappings persist only until the next ASID switch, even if they are marked global. An ASID switch happens in __kvm_mips_vcpu_run() at exception level after switching to the guest exception base. Subsequent TLB mapped kernel instructions just prior to switching to the guest trigger a TLB refill exception, which enters the guest exception handlers without updating EPC. This appears as a guest triggered TLB refill on a host kernel mapped (host KSeg2) address, which is not handled correctly as user (guest) mode accesses to kernel (host) segments always generate address error exceptions. 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: kvm@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-07-27 09:47:30 -07:00
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alchemy	pcmcia: db1xxx_ss: fix last irq_to_gpio user	2016-04-20 15:42:09 +09:00
ar7
ath25
ath79	MIPS: ath79: make bootconsole wait for both THRE and TEMT	2016-06-07 18:14:31 -07:00
bcm47xx
bcm63xx
bmips
boot	MIPS: ath79: Fix the size of the MISC INTC registers in ar9132.dtsi	2015-11-20 12:14:27 +01:00
cavium-octeon
cobalt
configs
dec
emma
fw
include	MIPS: KVM: Fix modular KVM under QEMU	2016-07-27 09:47:30 -07:00
jazz
jz4740
kernel	MIPS: Fix sigreturn via VDSO on microMIPS kernel	2016-06-07 18:14:31 -07:00
kvm	MIPS: KVM: Fix modular KVM under QEMU	2016-07-27 09:47:30 -07:00
lantiq
lasat
lib	MIPS: lib: Mark intrinsics notrace	2016-06-07 18:14:32 -07:00
loongson32
loongson64	MIPS: Loongson-3: Reserve 32MB for RS780E integrated GPU	2016-06-07 18:14:31 -07:00
math-emu	MIPS: math-emu: Fix jalr emulation when rd == $0	2016-06-07 18:14:30 -07:00
mm	MIPS: Sync icache & dcache in set_pte_at	2016-06-07 18:14:31 -07:00
mti-malta
mti-sead3
net	net: filter: make JITs zero A for SKF_AD_ALU_XOR_X	2016-01-06 00:43:52 -05:00
netlogic
oprofile
paravirt
pci	MIPS: Fix build error due to unused variables.	2015-12-22 15:21:18 +01:00
pistachio
pmcs-msp71xx	MIPS: Fix build error due to unused variables.	2015-12-22 15:21:18 +01:00
pnx833x
power
ralink
rb532
sgi-ip22
sgi-ip27
sgi-ip32
sibyte
sni	MIPS: Fix build error due to unused variables.	2015-12-22 15:21:18 +01:00
txx9
vdso	MIPS: VDSO: Build with `-fno-strict-aliasing'	2016-06-07 18:14:32 -07:00
vr41xx
xilfpga
Kbuild
Kbuild.platforms
Kconfig	MIPS: Fix build error when SMP is used without GIC	2016-03-16 08:43:01 -07:00
Kconfig.debug
Makefile