D54532.diff
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	diff --git a/sys/arm64/arm64/vfp.c b/sys/arm64/arm64/vfp.c
	--- a/sys/arm64/arm64/vfp.c
	+++ b/sys/arm64/arm64/vfp.c
	@@ -939,7 +939,7 @@
	return (false);

	sve_flags = 0;
	- if ((pcb->pcb_fpflags & PCB_FP_SVEVALID) == 0) {
	+ if (pcb->pcb_svesaved == NULL) {
	/* If SVE hasn't been used yet provide the VFP registers */
	buf_size = sizeof(struct fpreg);
	sve_flags \|= SVEREG_FLAG_FP;
	@@ -947,8 +947,6 @@
	/* We have SVE registers */
	buf_size = sve_buf_size(td);
	sve_flags \|= SVEREG_FLAG_SVE;
	- KASSERT(pcb->pcb_svesaved != NULL, ("%s: no saved sve",
	- __func__));
	}

	if (buf != NULL) {
	@@ -958,6 +956,10 @@
	if (td == curthread && (pcb->pcb_fpflags & PCB_FP_STARTED) != 0)
	vfp_save_state(td, pcb);

	+ if ((sve_flags & SVEREG_FLAG_REGS_MASK) == SVEREG_FLAG_SVE &&
	+ (pcb->pcb_fpflags & PCB_FP_SVEVALID) == 0)
	+ vfp_to_sve_sync(td);
	+
	header = buf;
	memset(header, 0, sizeof(*header));