[PATCH v2] arm64: KVM: Use SMCCC_ARCH_WORKAROUND_1 for Falkor BP hardening
Will Deacon
will.deacon at arm.com
Fri Mar 9 05:48:09 PST 2018
Hi SHanker,
On Mon, Mar 05, 2018 at 11:06:43AM -0600, Shanker Donthineni wrote:
> The function SMCCC_ARCH_WORKAROUND_1 was introduced as part of SMC
> V1.1 Calling Convention to mitigate CVE-2017-5715. This patch uses
> the standard call SMCCC_ARCH_WORKAROUND_1 for Falkor chips instead
> of Silicon provider service ID 0xC2001700.
>
> Signed-off-by: Shanker Donthineni <shankerd at codeaurora.org>
> ---
> Chnages since v1:
> - Trivial change in cpucaps.h (refresh after removing ARM64_HARDEN_BP_POST_GUEST_EXIT)
>
> arch/arm64/include/asm/cpucaps.h | 5 ++--
> arch/arm64/include/asm/kvm_asm.h | 2 --
> arch/arm64/kernel/bpi.S | 8 ------
> arch/arm64/kernel/cpu_errata.c | 55 ++++++++++++++--------------------------
> arch/arm64/kvm/hyp/entry.S | 12 ---------
> arch/arm64/kvm/hyp/switch.c | 10 --------
> 6 files changed, 21 insertions(+), 71 deletions(-)
Could you reply to my outstanding question on the last version of this patch
please?
http://lists.infradead.org/pipermail/linux-arm-kernel/2018-March/564194.html
Will
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