Shannon Zhao d692b8ad6e arm64: KVM: Add access handler for PMUSERENR register ... This register resets as unknown in 64bit mode while it resets as zero in 32bit mode. Here we choose to reset it as zero for consistency. PMUSERENR_EL0 holds some bits which decide whether PMU registers can be accessed from EL0. Add some check helpers to handle the access from EL0. When these bits are zero, only reading PMUSERENR will trap to EL2 and writing PMUSERENR or reading/writing other PMU registers will trap to EL1 other than EL2 when HCR.TGE==0. To current KVM configuration (HCR.TGE==0) there is no way to get these traps. Here we write 0xf to physical PMUSERENR register on VM entry, so that it will trap PMU access from EL0 to EL2. Within the register access handler we check the real value of guest PMUSERENR register to decide whether this access is allowed. If not allowed, return false to inject UND to guest. Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>		2016-02-29 18:34:21 +00:00
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hyp	arm64: KVM: Add access handler for PMUSERENR register	2016-02-29 18:34:21 +00:00
debug.c	KVM: arm64: add trace points for guest_debug debug	2015-07-21 12:50:43 +01:00
emulate.c	arm64: kvm: move to ESR_ELx macros	2015-01-15 12:24:25 +00:00
guest.c	arm64: KVM: Turn system register numbers to an enum	2015-12-14 11:30:43 +00:00
handle_exit.c	arm64: KVM: Turn system register numbers to an enum	2015-12-14 11:30:43 +00:00
hyp-init.S	arm64: KVM: Switch to C-based stage2 init	2016-02-29 18:34:15 +00:00
hyp.S	arm64: KVM: VHE: Patch out use of HVC	2016-02-29 18:34:16 +00:00
inject_fault.c	arm64: KVM: Fix AArch64 guest userspace exception injection	2016-01-24 21:55:57 +00:00
Kconfig	arm64: KVM: Define PMU data structure for each vcpu	2016-02-29 18:34:19 +00:00
Makefile	arm64: KVM: Add access handler for event counter register	2016-02-29 18:34:20 +00:00
regmap.c	arm64: KVM: 32bit GP register access	2013-06-12 16:42:14 +01:00
reset.c	arm64/kvm: Make use of the system wide safe values	2015-10-21 15:35:59 +01:00
sys_regs_generic_v8.c	arm64: KVM: Correctly handle zero register in system register accesses	2015-12-04 16:29:54 +00:00
sys_regs.c	arm64: KVM: Add access handler for PMUSERENR register	2016-02-29 18:34:21 +00:00
sys_regs.h	arm64: KVM: Correctly handle zero register in system register accesses	2015-12-04 16:29:54 +00:00
trace.h	KVM: arm64: add trace points for guest_debug debug	2015-07-21 12:50:43 +01:00