D39448.diff
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	diff --git a/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_aarch64.h b/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_aarch64.h
	--- a/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_aarch64.h
	+++ b/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_aarch64.h
	@@ -44,13 +44,39 @@
	#define _FREEBSD_SIMD_AARCH64_H

	#include <sys/types.h>
	+#include <sys/ucontext.h>
	#include <machine/elf.h>
	+#include <machine/fpu.h>
	#include <machine/md_var.h>
	+#include <machine/pcb.h>
	+
	+#ifdef _STANDALONE

	#define kfpu_allowed() 0
	-#define kfpu_initialize(tsk) do {} while (0)
	#define kfpu_begin() do {} while (0)
	#define kfpu_end() do {} while (0)
	+
	+#else
	+
	+/*
	+ * XXX kfpu_allowed() should be 1, but this is pending a fix to the BLAKE3
	+ * generated assembly to avoid clobbering x18. Turn it back on after that
	+ * lands.
	+ */
	+#define kfpu_allowed() 0
	+#define kfpu_begin() do { \
	+ if (__predict_false(!is_fpu_kern_thread(0))) \
	+ fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX); \
	+} while(0)
	+
	+#define kfpu_end() do { \
	+ if (__predict_false(curthread->td_pcb->pcb_fpflags & PCB_FP_NOSAVE)) \
	+ fpu_kern_leave(curthread, NULL); \
	+} while(0)
	+
	+#endif
	+
	+#define kfpu_initialize(tsk) do {} while (0)
	#define kfpu_init() (0)
	#define kfpu_fini() do {} while (0)