diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2019-11-08 13:35:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-10 11:21:18 +0100 |
| commit | d10ce9593da9edf141b7bfcf9e8f62d39a523c84 (patch) | |
| tree | 214a9a17b58f3cd6c77b59730e16766d2d5525d1 /include/linux/psci.h | |
| parent | f13582bcc607252f7309723aa903b4ed857de94b (diff) | |
arm64: KVM: Report SMCCC_ARCH_WORKAROUND_1 BP hardening support
commit 6167ec5c9145cdf493722dfd80a5d48bafc4a18a upstream.
A new feature of SMCCC 1.1 is that it offers firmware-based CPU
workarounds. In particular, SMCCC_ARCH_WORKAROUND_1 provides
BP hardening for CVE-2017-5715.
If the host has some mitigation for this issue, report that
we deal with it using SMCCC_ARCH_WORKAROUND_1, as we apply the
host workaround on every guest exit.
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
[v4.9: account for files moved to virt/ upstream]
Signed-off-by: Mark Rutland <mark.rutland@arm.com> [v4.9 backport]
Tested-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ardb: restrict to include/linux/arm-smccc.h]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/psci.h')
0 files changed, 0 insertions, 0 deletions