git: 1962f9631187 - stable/14 - zfs: enable FPU on powerpc*

The branch stable/14 has been updated by pkubaj:

URL: https://cgit.FreeBSD.org/src/commit/?id=1962f96311878e5413f6e70e0925f08c1d2f9db8

commit 1962f96311878e5413f6e70e0925f08c1d2f9db8
Author:     Piotr Kubaj <pkubaj@FreeBSD.org>
AuthorDate: 2025-03-27 16:32:59 +0000
Commit:     Piotr Kubaj <pkubaj@FreeBSD.org>
CommitDate: 2025-04-04 20:57:57 +0000

    zfs: enable FPU on powerpc*
    
    Differential Revision: https://reviews.freebsd.org/D49538
    
    (cherry picked from commit 5b02365ac656e1cccf293ec1c57a8eb6c5cd51e2)
---
 sys/conf/files.powerpc                                  | 13 +++++++++++--
 .../openzfs/include/os/freebsd/spl/sys/simd_powerpc.h   | 17 ++++++++++++-----
 2 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/sys/conf/files.powerpc b/sys/conf/files.powerpc
index 6d44d9114e25..ddce4b917890 100644
--- a/sys/conf/files.powerpc
+++ b/sys/conf/files.powerpc
@@ -17,8 +17,17 @@ contrib/openzfs/module/icp/asm-ppc64/blake3/b3_ppc64le_sse41.S	optional zfs comp
 # zfs sha2 hash support
 contrib/openzfs/module/icp/asm-ppc64/sha2/sha256-p8.S		optional zfs compile-with "${ZFS_S}"
 contrib/openzfs/module/icp/asm-ppc64/sha2/sha512-p8.S		optional zfs compile-with "${ZFS_S}"
-contrib/openzfs/module/icp/asm-ppc64/sha2/sha256-ppc.S		optional zfs compile-with "${ZFS_S}"
-contrib/openzfs/module/icp/asm-ppc64/sha2/sha512-ppc.S		optional zfs compile-with "${ZFS_S}"
+zfs-sha256-ppc.o		optional	zfs			\
+	dependency "$S/contrib/openzfs/module/icp/asm-ppc64/sha2/sha256-ppc.S" \
+	compile-with	"${CC} -c ${ZFS_ASM_CFLAGS} -o ${.TARGET} ${WERROR} $S/contrib/openzfs/module/icp/asm-ppc64/sha2/sha256-ppc.S" \
+	no-implicit-rule \
+	clean "zfs-sha256-ppc.o"
+
+zfs-sha512-ppc.o		optional	zfs			\
+	dependency "$S/contrib/openzfs/module/icp/asm-ppc64/sha2/sha512-ppc.S" \
+	compile-with	"${CC} -c ${ZFS_ASM_CFLAGS} -o ${.TARGET} ${WERROR} $S/contrib/openzfs/module/icp/asm-ppc64/sha2/sha512-ppc.S" \
+	no-implicit-rule \
+	clean "zfs-sha512-ppc.o"
 
 cddl/compat/opensolaris/kern/opensolaris_atomic.c			optional zfs powerpc | dtrace powerpc | zfs powerpcspe | dtrace powerpcspe compile-with "${ZFS_C}"
 cddl/dev/dtrace/powerpc/dtrace_asm.S		optional dtrace compile-with "${DTRACE_S}"
diff --git a/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_powerpc.h b/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_powerpc.h
index 2fd806e1a0b5..6d8503196050 100644
--- a/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_powerpc.h
+++ b/sys/contrib/openzfs/include/os/freebsd/spl/sys/simd_powerpc.h
@@ -43,18 +43,25 @@
 #ifndef _FREEBSD_SIMD_POWERPC_H
 #define	_FREEBSD_SIMD_POWERPC_H
 
+#include <machine/pcpu.h>
+
 #include <sys/types.h>
 #include <sys/cdefs.h>
 
 #include <machine/pcb.h>
 #include <machine/cpu.h>
+#include <machine/fpu.h>
 
-/* FreeBSD doesn't support floating point on powerpc kernel yet */
-#define	kfpu_allowed()		0
-
+#define	kfpu_allowed()		1
 #define	kfpu_initialize(tsk)	do {} while (0)
-#define	kfpu_begin()		do {} while (0)
-#define	kfpu_end()		do {} while (0)
+#define kfpu_begin() {					\
+	if (__predict_false(!is_fpu_kern_thread(0)))	\
+	fpu_kern_enter(PCPU_GET(curthread), NULL, FPU_KERN_NOCTX);\
+}
+#define kfpu_end()	{				\
+	if (__predict_false(PCPU_GET(curpcb)->pcb_flags & PCB_KERN_FPU_NOSAVE))\
+	fpu_kern_leave(PCPU_GET(curthread), NULL);	\
+}
 #define	kfpu_init()		(0)
 #define	kfpu_fini()		do {} while (0)