linux-kernel - [PATCH AUTOSEL 4.19 41/47] arm64/sve: Add stub for sve_max_virtualisable

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Date:   Mon,  8 Nov 2021 12:50:25 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Mark Brown <broonie@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Sasha Levin <sashal@...nel.org>,
        maz@...nel.org, Dave.Martin@....com, tanxiaofei@...wei.com,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 4.19 41/47] arm64/sve: Add stub for sve_max_virtualisable_vl()

From: Mark Brown <broonie@...nel.org>

[ Upstream commit 49ed920408f85fb143020cf7d95612b6b12a84a2 ]

Fixes build problems for configurations with KVM enabled but SVE disabled.

Reported-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Link: https://lore.kernel.org/r/20211022141635.2360415-2-broonie@kernel.org
Signed-off-by: Will Deacon <will@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.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;
+}
+
 static inline int sve_set_current_vl(unsigned long arg)
 {
 	return -EINVAL;
-- 
2.33.0