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e8ec032b18
linux/arch/arm64/kvm
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James Morse e8ec032b18 KVM: arm64: Restore host physical timer access on hyp_panic() 
When KVM panics, it hurridly restores the host context and parachutes
into the host's panic() code. At some point panic() touches the physical
timer/counter. Unless we are an arm64 system with VHE, this traps back
to EL2. If we're lucky, we panic again.

Add a __timer_save_state() call to KVMs hyp_panic() path, this saves the
guest registers and disables the traps for the host.

Fixes: 53fd5b6487 ("arm64: KVM: Add panic handling")
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
2017-05-16 09:54:25 +02:00
..
hyp KVM: arm64: Restore host physical timer access on hyp_panic() 2017-05-16 09:54:25 +02:00
debug.c arm64: KVM: Save/restore the host SPE state when entering/leaving a VM 2017-02-02 18:33:01 +00:00
guest.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
handle_exit.c arm64: KVM: Survive unknown traps from guests 2017-03-07 14:50:46 +00:00
hyp-init.S arm64: hyp-stub: Zero x0 on successful stub handling 2017-04-09 07:49:35 -07:00
hyp.S arm64: hyp-stub/KVM: Kill __hyp_get_vectors 2017-04-09 07:49:34 -07:00
inject_fault.c arm64: KVM: Add Virtual Abort injection helper 2016-09-08 12:53:00 +02:00
irq.h KVM: arm/arm64: Enable irqchip routing 2016-07-22 18:52:01 +01:00
Kconfig ARM: KVM: Support vGICv3 ITS 2016-11-14 10:32:54 +00:00
Makefile KVM: arm/arm64: Move shared files to virt/kvm/arm 2017-05-04 13:57:26 +02:00
regmap.c arm64: KVM: 32bit GP register access 2013-06-12 16:42:14 +01:00
reset.c arm64: cpufeature: Make ID reg accessor naming less counterintuitive 2017-04-04 16:55:41 +01:00
sys_regs_generic_v8.c KVM: arm64: Use common sysreg definitions 2017-03-22 18:38:26 +00:00
sys_regs.c Second round of KVM/ARM Changes for v4.12. 2017-05-09 12:51:49 +02:00
sys_regs.h Merge remote-tracking branch 'rutland/kvm/common-sysreg' into next-fix 2017-04-09 07:50:34 -07:00
trace.h KVM: arm64: add trace points for guest_debug debug 2015-07-21 12:50:43 +01:00
vgic-sys-reg-v3.c KVM: arm/arm64: vgic: Implement VGICv3 CPU interface access 2017-01-30 13:47:25 +00:00