linux/arch/arm64
Christoffer Dall db7dedd0de arm64: KVM: Handle traps of ICC_SRE_EL1 as RAZ/WI
When running on a system with a GICv3, we currenly don't allow the guest
to access the system register interface of the GICv3.  We do this by
clearing the ICC_SRE_EL2.Enable, which causes all guest accesses to
ICC_SRE_EL1 to trap to EL2 and causes all guest accesses to other ICC_
registers to cause an undefined exception in the guest.

However, we currently don't handle the trap of guest accesses to
ICC_SRE_EL1 and will spill out a warning.  The trap just needs to handle
the access as RAZ/WI, and a guest that tries to prod this register and
set ICC_SRE_EL1.SRE=1, must read back the value (which Linux already
does) to see if it succeeded, and will thus observe that ICC_SRE_EL1.SRE
was not set.

Add the simple trap handler in the sorted table of the system registers.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
[ardb: added cp15 handling]
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-11-26 14:40:43 +01:00
..
boot dtb: xgene: fix: Backward compatibility with older firmware 2014-11-04 17:08:42 -05:00
configs arm64: defconfig: update defconfig for 3.18 2014-11-05 17:07:58 +00:00
crypto arm64/crypto: remove redundant update of data 2014-08-26 11:42:22 +01:00
include arm64: ARCH_PFN_OFFSET should be unsigned long 2014-11-13 15:21:40 +00:00
kernel Correct the race condition in aarch64_insn_patch_text_sync() 2014-11-13 15:21:39 +00:00
kvm arm64: KVM: Handle traps of ICC_SRE_EL1 as RAZ/WI 2014-11-26 14:40:43 +01:00
lib arm64: __clear_user: handle exceptions on strb 2014-11-13 15:21:26 +00:00
mm arm64: Fix data type for physical address 2014-11-13 14:58:45 +00:00
net net: bpf: arm64: minor fix of type in jited 2014-10-20 17:47:04 +01:00
xen arm: xen: implement multicall hypercall support. 2014-04-24 13:09:46 +01:00
Kconfig arm64: ASLR: Don't randomise text when randomise_va_space == 0 2014-10-24 15:47:49 +01:00
Kconfig.debug arm64: Add CONFIG_DEBUG_SET_MODULE_RONX support 2014-09-08 14:39:18 +01:00
Makefile Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:22:26 +02:00