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UPSTREAM: arm64: sve: Provide sve_cond_update_zcr_vq fallback when !ARM64_SVE

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Compilation fails when KVM is selected and ARM64_SVE isn't.

The root cause is that sve_cond_update_zcr_vq is not defined when
ARM64_SVE is not selected. Fix it by adding an empty definition
when CONFIG_ARM64_SVE=n.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
[maz: simplified commit message, fleshed out dummy #define]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/1617183879-48748-1-git-send-email-tanxiaofei@huawei.com
(cherry picked from commit a9f8696d4b)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 190594147
Change-Id: I55b8027a6025262e3921561d37d73d2199625be4
This commit is contained in:
Xiaofei Tan
2021-03-31 17:44:39 +08:00
committed by Will Deacon
parent c2f432149b
commit 9843b9bdfa
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/include/asm/fpsimd.h
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@@ -168,6 +168,8 @@ static inline int sve_get_current_vl(void)
static inline void sve_user_disable(void) { BUILD_BUG(); }
static inline void sve_user_enable(void) { BUILD_BUG(); }
#define sve_cond_update_zcr_vq(val, reg) do { } while (0)
static inline void sve_init_vq_map(void) { }
static inline void sve_update_vq_map(void) { }
static inline int sve_verify_vq_map(void) { return 0; }