linux/arch/arm64/kvm
Marc Zyngier 2072d29c46 arm64: KVM: allows discrimination of AArch32 sysreg access
The current handling of AArch32 trapping is slightly less than
perfect, as it is not possible (from a handler point of view)
to distinguish it from an AArch64 access, nor to tell a 32bit
from a 64bit access either.

Fix this by introducing two additional flags:
- is_aarch32: true if the access was made in AArch32 mode
- is_32bit: true if is_aarch32 == true and a MCR/MRC instruction
  was used to perform the access (as opposed to MCRR/MRRC).

This allows a handler to cover all the possible conditions in which
a system register gets trapped.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-03-03 01:15:21 +00:00
..
emulate.c arm64: KVM: 32bit conditional execution emulation 2013-06-12 16:42:15 +01:00
guest.c arm64: KVM: Support X-Gene guest VCPU on APM X-Gene host 2013-12-28 10:28:50 +00:00
handle_exit.c First round of KVM updates for 3.14; PPC parts will come next week. 2014-01-22 21:40:43 -08:00
hyp-init.S arm64: KVM: initialize HYP mode following the kernel endianness 2013-11-06 10:10:01 +00:00
hyp.S arm/arm64: KVM: detect CPU reset on CPU_PM_EXIT 2014-02-27 19:27:10 +01:00
inject_fault.c arm64: KVM: 32bit guest fault injection 2013-06-12 16:42:18 +01:00
Kconfig arm64: KVM: Add Kconfig option for max VCPUs per-Guest 2013-12-28 10:28:50 +00:00
Makefile arm64: KVM: 32bit conditional execution emulation 2013-06-12 16:42:15 +01:00
regmap.c arm64: KVM: 32bit GP register access 2013-06-12 16:42:14 +01:00
reset.c arm64: KVM: enable initialization of a 32bit vcpu 2013-06-12 16:42:18 +01:00
sys_regs_generic_v8.c arm64: KVM: Support X-Gene guest VCPU on APM X-Gene host 2013-12-28 10:28:50 +00:00
sys_regs.c arm64: KVM: allows discrimination of AArch32 sysreg access 2014-03-03 01:15:21 +00:00
sys_regs.h arm64: KVM: allows discrimination of AArch32 sysreg access 2014-03-03 01:15:21 +00:00