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authorXiaofei Tan <tanxiaofei@huawei.com>2021-03-31 17:44:39 +0800
committerMarc Zyngier <maz@kernel.org>2021-03-31 11:08:28 +0100
commita9f8696d4be5228de9d1d4f0e9f027b64d77dab6 (patch)
tree0088a4a89d171174c3ab4c4a9adbd143e753456a
parent5b08709313718e95ba06ef49aa82f964a605bd9c (diff)
arm64: sve: Provide sve_cond_update_zcr_vq fallback when !ARM64_SVE
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
-rw-r--r--arch/arm64/include/asm/fpsimd.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index 05c9c55768b8..ff3879ac2267 100644
--- a/arch/arm64/include/asm/fpsimd.h
+++ b/arch/arm64/include/asm/fpsimd.h
@@ -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; }