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SubjectRe: [PATCH AUTOSEL 4.19 41/47] arm64/sve: Add stub for sve_max_virtualisable_vl()
On Mon, Nov 08, 2021 at 12:50:25PM -0500, Sasha Levin wrote:
> From: Mark Brown <broonie@kernel.org>
>
> [ Upstream commit 49ed920408f85fb143020cf7d95612b6b12a84a2 ]
>
> Fixes build problems for configurations with KVM enabled but SVE disabled.
>
> Reported-by: Catalin Marinas <catalin.marinas@arm.com>
> Signed-off-by: Mark Brown <broonie@kernel.org>
> Link: https://lore.kernel.org/r/20211022141635.2360415-2-broonie@kernel.org
> Signed-off-by: Will Deacon <will@kernel.org>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
> arch/arm64/include/asm/fpsimd.h | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
> index dd1ad3950ef5d..5bd799ea683b4 100644
> --- a/arch/arm64/include/asm/fpsimd.h
> +++ b/arch/arm64/include/asm/fpsimd.h
> @@ -130,6 +130,11 @@ static inline void fpsimd_release_task(struct task_struct *task) { }
> static inline void sve_sync_to_fpsimd(struct task_struct *task) { }
> static inline void sve_sync_from_fpsimd_zeropad(struct task_struct *task) { }
>
> +static inline int sve_max_virtualisable_vl(void)
> +{
> + return 0;
> +}

IIRC this fix was only needed for 5.16-rc1.

--
Catalin

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