Oliver Upton 57b5be2bd1 KVM: arm64: Reject 32bit user PSTATE on asymmetric systems ...

[ Upstream commit b10d86fb8e ]

KVM does not support AArch32 EL0 on asymmetric systems. To that end,
prevent userspace from configuring a vCPU in such a state through
setting PSTATE.

It is already ABI that KVM rejects such a write on a system where
AArch32 EL0 is unsupported. Though the kernel's definition of a 32bit
system changed in commit 2122a83331 ("arm64: Allow mismatched
32-bit EL0 support"), KVM's did not.

Fixes: 2122a83331 ("arm64: Allow mismatched 32-bit EL0 support")
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220816192554.1455559-3-oliver.upton@linux.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-08-25 11:40:29 +02:00

..

boot

arm64: dts: qcom: qcs404: Fix incorrect USB2 PHYs assignment

2022-08-17 14:23:14 +02:00

configs

arm64: defconfig: build imx-sdma as a module

2022-04-08 14:24:00 +02:00

crypto

crypto: arm64/gcm - Select AEAD for GHASH_ARM64_CE

2022-08-17 14:23:26 +02:00

hyperv

arm64: hyperv: Initialize hypervisor on boot

2021-08-04 16:54:36 +00:00

include

KVM: arm64: Treat PMCR_EL1.LC as RES1 on asymmetric systems

2022-08-25 11:40:29 +02:00

kernel

arm64: cpufeature: Allow different PMU versions in ID_DFR0_EL1

2022-08-17 14:23:08 +02:00

kvm

KVM: arm64: Reject 32bit user PSTATE on asymmetric systems

2022-08-25 11:40:29 +02:00

lib

arm64: mte: DC {GVA,GZVA} shouldn't be used when DCZID_EL0.DZP == 1

2022-01-27 11:03:28 +01:00

mm

arm64: kasan: Revert "arm64: mte: reset the page tag in page->flags"

2022-08-17 14:23:00 +02:00

net

bpf, arm64: Use emit_addr_mov_i64() for BPF_PSEUDO_FUNC

2022-07-12 16:34:54 +02:00

tools

arm64: Mitigate spectre style branch history side channels

2022-03-11 12:22:35 +01:00

xen

…

Kbuild

arm64: hyperv: Add Hyper-V hypercall and register access utilities

2021-08-04 16:54:36 +00:00

Kconfig

arm64: select TRACE_IRQFLAGS_NMI_SUPPORT

2022-08-17 14:23:08 +02:00

Kconfig.debug

…

Kconfig.platforms

irqchip/exiu: Fix acknowledgment of edge triggered interrupts

2022-06-09 10:22:54 +02:00

Makefile

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2021-09-01 15:04:29 -07:00