Mark Brown d5024dc5e6 arm64: Filter out SME hwcaps when FEAT_SME isn't implemented ... commit a75ad2fc76 upstream. We have a number of hwcaps for various SME subfeatures enumerated via ID_AA64SMFR0_EL1. Currently we advertise these without cross checking against the main SME feature, advertised in ID_AA64PFR1_EL1.SME which means that if the two are out of sync userspace can see a confusing situation where SME subfeatures are advertised without the base SME hwcap. This can be readily triggered by using the arm64.nosme override which only masks out ID_AA64PFR1_EL1.SME, and there have also been reports of VMMs which do the same thing. Fix this as we did previously for SVE in 064737920b ("arm64: Filter out SVE hwcaps when FEAT_SVE isn't implemented") by filtering out the SME subfeature hwcaps when FEAT_SME is not present. Fixes: 5e64b862c4 ("arm64/sme: Basic enumeration support") Reported-by: Yury Khrustalev <yury.khrustalev@arm.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250620-arm64-sme-filter-hwcaps-v1-1-02b9d3c2d8ef@kernel.org Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-07-24 08:53:20 +02:00
..
boot	arm64: dts: rockchip: use cs-gpios for spi1 on ringneck	2025-07-24 08:53:13 +02:00
configs	arm64: defconfig: mediatek: enable PHY drivers	2025-06-19 15:28:24 +02:00
crypto
hyperv
include	arm64/mm: Close theoretical race where stale TLB entry remains valid	2025-06-27 11:08:46 +01:00
kernel	arm64: Filter out SME hwcaps when FEAT_SME isn't implemented	2025-07-24 08:53:20 +02:00
kvm	KVM: arm64: Tear down vGIC on failed vCPU creation	2025-04-25 10:45:23 +02:00
lib	arm64: insn: Add support for encoding DSB	2025-05-18 08:24:10 +02:00
mm	arm64: Restrict pagetable teardown to avoid false warning	2025-06-27 11:09:00 +01:00
net	bpf, arm64: Fix address emission with tag-based KASAN enabled	2025-05-22 14:12:25 +02:00
tools	arm64: errata: Add workaround for Arm errata 3194386 and 3312417	2024-08-14 13:58:48 +02:00
xen	xen/arm: call uaccess_ttbr0_enable for dm_op hypercall	2025-06-19 15:28:46 +02:00
Kbuild
Kconfig	arm64: Support ARM64_VA_BITS=52 when setting ARCH_MMAP_RND_BITS_MAX	2025-06-19 15:28:07 +02:00
Kconfig.debug
Kconfig.platforms
Makefile	arm64: Force position-independent veneers	2024-11-01 01:58:27 +01:00