Suzuki K Poulose fa0c0dce58 KVM: arm64: Hide system instruction access to Trace registers ... [ Upstream commit 1d676673d6 ] Currently we advertise the ID_AA6DFR0_EL1.TRACEVER for the guest, when the trace register accesses are trapped (CPTR_EL2.TTA == 1). So, the guest will get an undefined instruction, if trusts the ID registers and access one of the trace registers. Lets be nice to the guest and hide the feature to avoid unexpected behavior. Even though this can be done at KVM sysreg emulation layer, we do this by removing the TRACEVER from the sanitised feature register field. This is fine as long as the ETM drivers can handle the individual trace units separately, even when there are differences among the CPUs. Cc: Will Deacon <will@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20210323120647.454211-2-suzuki.poulose@arm.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-04-16 11:43:19 +02:00
..
boot	arm64: dts: imx8mm/q: Fix pad control of SD1_DATA0	2021-04-14 08:42:07 +02:00
configs	arm64: defconfig: Build in CONFIG_GPIO_MXC by default	2020-10-26 15:48:58 +08:00
crypto	crypto: arm64/sha - add missing module aliases	2021-03-04 11:38:31 +01:00
include	KVM: arm64: Fix nVHE hyp panic host context restore	2021-03-17 17:06:37 +01:00
kernel	KVM: arm64: Hide system instruction access to Trace registers	2021-04-16 11:43:19 +02:00
kvm	KVM: arm64: Fix nVHE hyp panic host context restore	2021-03-17 17:06:37 +01:00
lib	arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S	2020-10-30 08:32:31 +00:00
mm	arm64: mm: correct the inside linear map range during hotplug check	2021-04-07 15:00:03 +02:00
net	arm64: bpf: Fix branch offset in JIT	2020-09-17 12:05:36 +01:00
xen
Kbuild
Kconfig	arm64: Make CPU_BIG_ENDIAN depend on ld.bfd or ld.lld 13.0.0+	2021-03-11 14:17:22 +01:00
Kconfig.debug
Kconfig.platforms	arm64: berlin: Select DW_APB_TIMER_OF	2020-10-26 10:45:03 +01:00
Makefile	arm64: link with -z norelro for LLD or aarch64-elf	2021-01-12 20:18:24 +01:00