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| author | Marc Zyngier <maz@kernel.org> | 2024-08-07 12:51:44 +0100 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-08-07 19:09:35 +0000 |
| commit | 10f2ad032defe906240d0c3b62dcbceace96b230 (patch) | |
| tree | d6dd2c65eaddb5d667289dcac5d72f493b6c972b /arch/arm64/kvm | |
| parent | 7fef1eb0b013eaa42019a95a08f71368e5a22dba (diff) | |
| download | linux-stable-10f2ad032defe906240d0c3b62dcbceace96b230.tar.gz linux-stable-10f2ad032defe906240d0c3b62dcbceace96b230.tar.bz2 linux-stable-10f2ad032defe906240d0c3b62dcbceace96b230.zip | |
KVM: arm64: Enforce dependency on an ARMv8.4-aware toolchain
With the NV support of TLBI-range operations, KVM makes use of
instructions that are only supported by binutils versions >= 2.30.
This breaks the build for very old toolchains.
Make KVM support conditional on having ARMv8.4 support in the
assembler, side-stepping the issue.
Fixes: 5d476ca57d7d ("KVM: arm64: nv: Add handling of range-based TLBI operations")
Reported-by: Viresh Kumar <viresh.kumar@linaro.org>
Suggested-by: Arnd Bergmann <arnd@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240807115144.3237260-1-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/kvm')
| -rw-r--r-- | arch/arm64/kvm/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig index 58f09370d17e..8304eb342be9 100644 --- a/arch/arm64/kvm/Kconfig +++ b/arch/arm64/kvm/Kconfig @@ -19,6 +19,7 @@ if VIRTUALIZATION menuconfig KVM bool "Kernel-based Virtual Machine (KVM) support" + depends on AS_HAS_ARMV8_4 select KVM_COMMON select KVM_GENERIC_HARDWARE_ENABLING select KVM_GENERIC_MMU_NOTIFIER |