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| author | kib <kib@FreeBSD.org> | 2010-06-05 16:00:53 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2010-06-05 16:00:53 +0000 |
| commit | 6a41cd83d70cdd49e05e3507e1bff813ffbcdced (patch) | |
| tree | 645d17d30352ada99870f57e7ca5b1fe43ad629c /sys/crypto/via/padlock_hash.c | |
| parent | 2d77212fe48ecc0a97a3c56ca4cb8dc37493a066 (diff) | |
| download | FreeBSD-src-6a41cd83d70cdd49e05e3507e1bff813ffbcdced.zip FreeBSD-src-6a41cd83d70cdd49e05e3507e1bff813ffbcdced.tar.gz | |
Use the fpu_kern_enter() interface to properly separate usermode FPU
context from in-kernel execution of padlock instructions and to handle
spurious FPUDNA exceptions that sometime are raised when doing padlock
calculations.
Globally mark crypto(9) kthread as using FPU.
Reviewed by: pjd
Hardware provided by: Sentex Communications
Tested by: pho
PR: amd64/135014
MFC after: 1 month
Diffstat (limited to 'sys/crypto/via/padlock_hash.c')
| -rw-r--r-- | sys/crypto/via/padlock_hash.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/crypto/via/padlock_hash.c b/sys/crypto/via/padlock_hash.c index 71f956e..58c58b2 100644 --- a/sys/crypto/via/padlock_hash.c +++ b/sys/crypto/via/padlock_hash.c @@ -34,12 +34,14 @@ __FBSDID("$FreeBSD$"); #include <sys/malloc.h> #include <sys/libkern.h> #include <sys/endian.h> +#include <sys/pcpu.h> #if defined(__amd64__) || (defined(__i386__) && !defined(PC98)) #include <machine/cpufunc.h> #include <machine/cputypes.h> #include <machine/md_var.h> #include <machine/specialreg.h> #endif +#include <machine/pcb.h> #include <opencrypto/cryptodev.h> #include <opencrypto/cryptosoft.h> /* for hmac_ipad_buffer and hmac_opad_buffer */ @@ -363,12 +365,18 @@ int padlock_hash_process(struct padlock_session *ses, struct cryptodesc *maccrd, struct cryptop *crp) { + struct thread *td; int error; + td = curthread; + error = fpu_kern_enter(td, &ses->ses_fpu_ctx, FPU_KERN_NORMAL); + if (error != 0) + return (error); if ((maccrd->crd_flags & CRD_F_KEY_EXPLICIT) != 0) padlock_hash_key_setup(ses, maccrd->crd_key, maccrd->crd_klen); error = padlock_authcompute(ses, maccrd, crp->crp_buf, crp->crp_flags); + fpu_kern_leave(td, &ses->ses_fpu_ctx); return (error); } |
