git: 0609ca2f19d4 - stable/14 - padlock: Switch to using FPU_KERN_NOCTX

The branch stable/14 has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=0609ca2f19d48d95005fc6b3b71422cce708c372

commit 0609ca2f19d48d95005fc6b3b71422cce708c372
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2023-08-25 19:34:05 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2023-12-29 21:49:41 +0000

    padlock: Switch to using FPU_KERN_NOCTX
    
    Reviewed by:    kib, markj
    Differential Revision:  https://reviews.freebsd.org/D41582
    
    (cherry picked from commit 3b0e353fe64221b6fbb335348b4a54d12de95243)
---
 sys/crypto/via/padlock.c        | 23 +++++++++--------------
 sys/crypto/via/padlock.h        |  3 ---
 sys/crypto/via/padlock_cipher.c |  5 +++--
 sys/crypto/via/padlock_hash.c   |  5 +++--
 4 files changed, 15 insertions(+), 21 deletions(-)

diff --git a/sys/crypto/via/padlock.c b/sys/crypto/via/padlock.c
index 314beffbe2f5..b8dae256dbf4 100644
--- a/sys/crypto/via/padlock.c
+++ b/sys/crypto/via/padlock.c
@@ -36,6 +36,7 @@
 #if defined(__amd64__) || defined(__i386__)
 #include <machine/cpufunc.h>
 #include <machine/cputypes.h>
+#include <machine/fpu.h>
 #include <machine/md_var.h>
 #include <machine/specialreg.h>
 #endif
@@ -62,8 +63,7 @@ static int padlock_probesession(device_t, const struct crypto_session_params *);
 static int padlock_newsession(device_t, crypto_session_t cses,
     const struct crypto_session_params *);
 static void padlock_freesession(device_t, crypto_session_t cses);
-static void padlock_freesession_one(struct padlock_softc *sc,
-    struct padlock_session *ses);
+static void padlock_freesession_one(struct padlock_session *ses);
 static int padlock_process(device_t, struct cryptop *crp, int hint __unused);
 
 MALLOC_DEFINE(M_PADLOCK, "padlock_data", "PadLock Data");
@@ -177,28 +177,25 @@ static int
 padlock_newsession(device_t dev, crypto_session_t cses,
     const struct crypto_session_params *csp)
 {
-	struct padlock_softc *sc = device_get_softc(dev);
-	struct padlock_session *ses = NULL;
+	struct padlock_session *ses;
 	struct thread *td;
 	int error;
 
 	ses = crypto_get_driver_session(cses);
-	ses->ses_fpu_ctx = fpu_kern_alloc_ctx(FPU_KERN_NORMAL);
 
 	error = padlock_cipher_setup(ses, csp);
 	if (error != 0) {
-		padlock_freesession_one(sc, ses);
+		padlock_freesession_one(ses);
 		return (error);
 	}
 
 	if (csp->csp_mode == CSP_MODE_ETA) {
 		td = curthread;
-		fpu_kern_enter(td, ses->ses_fpu_ctx, FPU_KERN_NORMAL |
-		    FPU_KERN_KTHR);
+		fpu_kern_enter(td, NULL, FPU_KERN_NORMAL | FPU_KERN_NOCTX);
 		error = padlock_hash_setup(ses, csp);
-		fpu_kern_leave(td, ses->ses_fpu_ctx);
+		fpu_kern_leave(td, NULL);
 		if (error != 0) {
-			padlock_freesession_one(sc, ses);
+			padlock_freesession_one(ses);
 			return (error);
 		}
 	}
@@ -207,21 +204,19 @@ padlock_newsession(device_t dev, crypto_session_t cses,
 }
 
 static void
-padlock_freesession_one(struct padlock_softc *sc, struct padlock_session *ses)
+padlock_freesession_one(struct padlock_session *ses)
 {
 
 	padlock_hash_free(ses);
-	fpu_kern_free_ctx(ses->ses_fpu_ctx);
 }
 
 static void
 padlock_freesession(device_t dev, crypto_session_t cses)
 {
-	struct padlock_softc *sc = device_get_softc(dev);
 	struct padlock_session *ses;
 
 	ses = crypto_get_driver_session(cses);
-	padlock_freesession_one(sc, ses);
+	padlock_freesession_one(ses);
 }
 
 static int
diff --git a/sys/crypto/via/padlock.h b/sys/crypto/via/padlock.h
index 93ee9ab9c8b3..162d281506e2 100644
--- a/sys/crypto/via/padlock.h
+++ b/sys/crypto/via/padlock.h
@@ -30,8 +30,6 @@
 #include <opencrypto/cryptodev.h>
 #include <crypto/rijndael/rijndael.h>
 
-#include <machine/fpu.h>
-
 union padlock_cw {
 	uint64_t raw;
 	struct {
@@ -66,7 +64,6 @@ struct padlock_session {
 	uint8_t		*ses_ictx;
 	uint8_t		*ses_octx;
 	int		ses_mlen;
-	struct fpu_kern_ctx *ses_fpu_ctx;
 };
 
 #define	PADLOCK_ALIGN(p)	(void *)(roundup2((uintptr_t)(p), 16))
diff --git a/sys/crypto/via/padlock_cipher.c b/sys/crypto/via/padlock_cipher.c
index 253a84875626..136954870ae3 100644
--- a/sys/crypto/via/padlock_cipher.c
+++ b/sys/crypto/via/padlock_cipher.c
@@ -53,6 +53,7 @@
 #include <sys/libkern.h>
 #include <sys/pcpu.h>
 #include <sys/uio.h>
+#include <machine/fpu.h>
 
 #include <opencrypto/cryptodev.h>
 #include <crypto/rijndael/rijndael.h>
@@ -221,10 +222,10 @@ padlock_cipher_process(struct padlock_session *ses, struct cryptop *crp,
 	}
 
 	td = curthread;
-	fpu_kern_enter(td, ses->ses_fpu_ctx, FPU_KERN_NORMAL | FPU_KERN_KTHR);
+	fpu_kern_enter(td, NULL, FPU_KERN_NORMAL | FPU_KERN_NOCTX);
 	padlock_cbc(abuf, abuf, crp->crp_payload_length / AES_BLOCK_LEN, key,
 	    cw, iv);
-	fpu_kern_leave(td, ses->ses_fpu_ctx);
+	fpu_kern_leave(td, NULL);
 
 	if (allocated) {
 		crypto_copyback(crp, crp->crp_payload_start,
diff --git a/sys/crypto/via/padlock_hash.c b/sys/crypto/via/padlock_hash.c
index 706452c45a3e..d3cf46e10c5f 100644
--- a/sys/crypto/via/padlock_hash.c
+++ b/sys/crypto/via/padlock_hash.c
@@ -36,6 +36,7 @@
 #if defined(__amd64__) || defined(__i386__)
 #include <machine/cpufunc.h>
 #include <machine/cputypes.h>
+#include <machine/fpu.h>
 #include <machine/md_var.h>
 #include <machine/specialreg.h>
 #endif
@@ -392,13 +393,13 @@ padlock_hash_process(struct padlock_session *ses, struct cryptop *crp,
 	int error;
 
 	td = curthread;
-	fpu_kern_enter(td, ses->ses_fpu_ctx, FPU_KERN_NORMAL | FPU_KERN_KTHR);
+	fpu_kern_enter(td, NULL, FPU_KERN_NORMAL | FPU_KERN_NOCTX);
 	if (crp->crp_auth_key != NULL)
 		padlock_hash_key_setup(ses, crp->crp_auth_key,
 		    csp->csp_auth_klen);
 
 	error = padlock_authcompute(ses, crp);
-	fpu_kern_leave(td, ses->ses_fpu_ctx);
+	fpu_kern_leave(td, NULL);
 	return (error);
 }