Ran into this while looking at some new crypto code using FPU hitting a WARN_ON_ONCE(!irq_fpu_usable()) in the kernel_fpu_begin() on a x86 kernel that uses the new eagerfpu model. In short, current eagerfpu changes return 0 for interrupted_kernel_fpu_idle() and the in_interrupt() thinks it is in the interrupt context because of the local_bh_disable(). Thus resulting in the WARN_ON(). Remove the local_bh_disable/enable() calls around the existing local_irq_disable/enable() calls. local_irq_disable/enable() already disables the BH. [ If there are any other legitimate users calling kernel_fpu_begin() from the process context but with BH disabled, then we can look into fixing the irq_fpu_usable() in future. ] Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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.. | ||
async_tx | ||
842.c | ||
ablkcipher.c | ||
aead.c | ||
aes_generic.c | ||
af_alg.c | ||
ahash.c | ||
algapi.c | ||
algboss.c | ||
algif_hash.c | ||
algif_skcipher.c | ||
ansi_cprng.c | ||
anubis.c | ||
api.c | ||
arc4.c | ||
authenc.c | ||
authencesn.c | ||
blkcipher.c | ||
blowfish_common.c | ||
blowfish_generic.c | ||
camellia_generic.c | ||
cast5_generic.c | ||
cast6_generic.c | ||
cbc.c | ||
ccm.c | ||
chainiv.c | ||
cipher.c | ||
compress.c | ||
crc32c.c | ||
cryptd.c | ||
crypto_null.c | ||
crypto_user.c | ||
crypto_wq.c | ||
ctr.c | ||
cts.c | ||
deflate.c | ||
des_generic.c | ||
ecb.c | ||
eseqiv.c | ||
fcrypt.c | ||
fips.c | ||
gcm.c | ||
gf128mul.c | ||
ghash-generic.c | ||
hmac.c | ||
internal.h | ||
Kconfig | ||
khazad.c | ||
krng.c | ||
lrw.c | ||
lzo.c | ||
Makefile | ||
md4.c | ||
md5.c | ||
michael_mic.c | ||
pcbc.c | ||
pcompress.c | ||
pcrypt.c | ||
proc.c | ||
ripemd.h | ||
rmd128.c | ||
rmd160.c | ||
rmd256.c | ||
rmd320.c | ||
rng.c | ||
salsa20_generic.c | ||
scatterwalk.c | ||
seed.c | ||
seqiv.c | ||
serpent_generic.c | ||
sha1_generic.c | ||
sha256_generic.c | ||
sha512_generic.c | ||
shash.c | ||
tcrypt.c | ||
tcrypt.h | ||
tea.c | ||
testmgr.c | ||
testmgr.h | ||
tgr192.c | ||
twofish_common.c | ||
twofish_generic.c | ||
vmac.c | ||
wp512.c | ||
xcbc.c | ||
xor.c | ||
xts.c | ||
zlib.c |