Marc Zyngier 0225fd5e0a KVM: arm64: Fix 32bit PC wrap-around ... In the unlikely event that a 32bit vcpu traps into the hypervisor on an instruction that is located right at the end of the 32bit range, the emulation of that instruction is going to increment PC past the 32bit range. This isn't great, as userspace can then observe this value and get a bit confused. Conversly, userspace can do things like (in the context of a 64bit guest that is capable of 32bit EL0) setting PSTATE to AArch64-EL0, set PC to a 64bit value, change PSTATE to AArch32-USR, and observe that PC hasn't been truncated. More confusion. Fix both by: - truncating PC increments for 32bit guests - sanitizing all 32bit regs every time a core reg is changed by userspace, and that PSTATE indicates a 32bit mode. Cc: stable@vger.kernel.org Acked-by: Will Deacon <will@kernel.org> Signed-off-by: Marc Zyngier <maz@kernel.org>		2020-05-01 09:51:08 +01:00
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hyp	KVM: arm64: Save/restore sp_el0 as part of __guest_enter	2020-04-30 12:01:35 +01:00
debug.c
fpsimd.c
guest.c	KVM: arm64: Fix 32bit PC wrap-around	2020-05-01 09:51:08 +01:00
handle_exit.c
hyp-init.S
hyp.S
inject_fault.c
irq.h
Kconfig
Makefile
pmu.c
regmap.c
reset.c
sys_regs_generic_v8.c
sys_regs.c
sys_regs.h
trace.h
va_layout.c
vgic-sys-reg-v3.c