WSL2-Linux-Kernel/arch/arm64/kvm
James Morse 8979720ac6 arm64: Use the clearbhb instruction in mitigations
commit 228a26b912 upstream.

Future CPUs may implement a clearbhb instruction that is sufficient
to mitigate SpectreBHB. CPUs that implement this instruction, but
not CSV2.3 must be affected by Spectre-BHB.

Add support to use this instruction as the BHB mitigation on CPUs
that support it. The instruction is in the hint space, so it will
be treated by a NOP as older CPUs.

Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-11 12:22:35 +01:00
..
hyp arm64: Use the clearbhb instruction in mitigations 2022-03-11 12:22:35 +01:00
vgic KVM: arm64: vgic: Read HW interrupt pending state from the HW 2022-03-08 19:12:30 +01:00
Kconfig Merge branch kvm-arm64/generic-entry into kvmarm-master/next 2021-08-20 12:23:09 +01:00
Makefile KVM: stats: Add fd-based API to read binary stats data 2021-06-24 11:47:57 -04:00
arch_timer.c KVM: arm64: timer: Add support for SW-based deactivation 2021-06-01 10:46:00 +01:00
arm.c KVM: arm64: Allow indirect vectors to be used without SPECTRE_V3A 2022-03-11 12:22:33 +01:00
debug.c KVM: arm64: MDCR_EL2 is a 64-bit register 2021-08-20 11:12:17 +01:00
fpsimd.c KVM: arm64: Save/restore SVE state for nVHE 2021-03-18 14:23:12 +00:00
guest.c KVM/arm64 updates for 5.15 2021-09-06 06:34:48 -04:00
handle_exit.c KVM: arm64: Stop handle_exit() from handling HVC twice when an SError occurs 2022-02-08 18:34:06 +01:00
hypercalls.c KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated 2022-03-11 12:22:35 +01:00
inject_fault.c KVM: arm64: Move AArch32 exceptions over to AArch64 sysregs 2020-11-10 11:22:51 +00:00
irq.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
mmio.c KVM: arm64: Make kvm_skip_instr() and co private to HYP 2020-11-10 08:34:24 +00:00
mmu.c KVM: arm64: Release mmap_lock when using VM_SHARED with MTE 2021-10-05 13:22:45 +01:00
perf.c KVM: arm64: Fix PMU probe ordering 2021-09-20 12:43:34 +01:00
pmu-emul.c KVM: arm64: Fix PMU probe ordering 2021-09-20 12:43:34 +01:00
pmu.c KVM: arm64: Disable PMU support in protected mode 2021-03-19 12:02:19 +00:00
psci.c KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated 2022-03-11 12:22:35 +01:00
pvtime.c KVM: arm64: Use kvm_write_guest_lock when init stolen time 2020-12-03 19:02:18 +00:00
reset.c Merge branch kvm-arm64/psci/cpu_on into kvmarm-master/next 2021-08-20 12:23:02 +01:00
sys_regs.c arm64: add ID_AA64ISAR2_EL1 sys register 2022-03-11 12:22:33 +01:00
sys_regs.h KVM: arm64: Refactor sys_regs.h,c for nVHE reuse 2021-08-20 11:12:17 +01:00
trace.h KVM: arm64: Move virt/kvm/arm to arch/arm64 2020-05-16 15:03:59 +01:00
trace_arm.h KVM: Move arm64's MMU notifier trace events to generic code 2021-04-17 08:30:56 -04:00
trace_handle_exit.h KVM: arm64: Upgrade trace_kvm_arm_set_dreg32() to 64bit 2021-08-20 11:12:18 +01:00
trng.c KVM: arm64: Implement the TRNG hypervisor call 2021-01-25 22:19:31 +00:00
va_layout.c KVM: arm64: Generate final CTR_EL0 value when running in Protected mode 2021-03-25 11:00:33 +00:00
vgic-sys-reg-v3.c KVM: arm64: Drop is_aarch32 trap attribute 2020-11-10 11:22:52 +00:00