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Marc Zyngier d3ec3a08fa arm64: KVM: Trap VM ops when ARM64_WORKAROUND_CAVIUM_TX2_219_TVM is set 
In order to workaround the TX2-219 erratum, it is necessary to trap
TTBRx_EL1 accesses to EL2. This is done by setting HCR_EL2.TVM on
guest entry, which has the side effect of trapping all the other
VM-related sysregs as well.

To minimize the overhead, a fast path is used so that we don't
have to go all the way back to the main sysreg handling code,
unless the rest of the hypervisor expects to see these accesses.

Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
 		2019-10-08 12:25:03 +01:00
..
Makefile KVM: arm/arm64: Move cc/it checks under hyp's Makefile to avoid instrumentation 2019-05-24 14:53:20 +01:00
debug-sr.c arm64: KVM: hyp: debug-sr: Mark expected switch fall-through 2019-07-29 11:01:37 +01:00
entry.S KVM: arm64: Skip more of the SError vaxorcism 2019-07-05 13:03:34 +01:00
fpsimd.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
hyp-entry.S KVM: arm64: Consume pending SError as early as possible 2019-07-05 13:03:29 +01:00
switch.c arm64: KVM: Trap VM ops when ARM64_WORKAROUND_CAVIUM_TX2_219_TVM is set 2019-10-08 12:25:03 +01:00
sysreg-sr.c KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s 2019-07-05 13:57:25 +01:00
tlb.c arm64: KVM: Replace hyp_alternate_select with has_vhe() 2019-09-09 18:16:32 +01:00
vgic-v2-cpuif-proxy.c KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s 2019-07-05 13:57:25 +01:00