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72c8117adf
linux-next/drivers/crypto
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Arnd Bergmann 72c8117adf crypto: ccp - Reduce maximum stack usage 
Each of the operations in ccp_run_cmd() needs several hundred
bytes of kernel stack. Depending on the inlining, these may
need separate stack slots that add up to more than the warning
limit, as shown in this clang based build:

drivers/crypto/ccp/ccp-ops.c:871:12: error: stack frame size of 1164 bytes in function 'ccp_run_aes_cmd' [-Werror,-Wframe-larger-than=]
static int ccp_run_aes_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)

The problem may also happen when there is no warning, e.g. in the
ccp_run_cmd()->ccp_run_aes_cmd()->ccp_run_aes_gcm_cmd() call chain with
over 2000 bytes.

Mark each individual function as 'noinline_for_stack' to prevent
this from happening, and move the calls to the two special cases for aes
into the top-level function. This will keep the actual combined stack
usage to the mimimum: 828 bytes for ccp_run_aes_gcm_cmd() and
at most 524 bytes for each of the other cases.

Fixes: 63b945091a ("crypto: ccp - CCP device driver and interface support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-07-27 21:08:31 +10:00
..
amcc crypto: amcc - switch to AES library for GCM key derivation 2019-07-26 14:58:12 +10:00
axis treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
bcm Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
caam crypto: drivers - Use kmemdup rather than duplicating its implementation 2019-07-26 15:03:59 +10:00
cavium crypto: cavium/nitrox - Add support for loading asymmetric crypto firmware 2019-07-26 22:08:05 +10:00
ccp crypto: ccp - Reduce maximum stack usage 2019-07-27 21:08:31 +10:00
ccree crypto: ccree - notify TEE on FIPS tests errors 2019-07-26 14:51:57 +10:00
chelsio crypto: chelsio - replace AES cipher calls with library calls 2019-07-26 14:58:35 +10:00
hisilicon crypto: hisilicon - Use the correct style for SPDX License Identifier 2019-06-13 14:31:41 +08:00
inside-secure crypto: inside-secure -reduce hash byte counters to 64 bits 2019-07-26 22:08:01 +10:00
marvell crypto: cesa/aes - switch to library version of key expansion routine 2019-07-26 14:56:03 +10:00
mediatek treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
nx Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
qat Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
qce treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
rockchip treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
stm32 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-19 12:23:37 -07:00
sunxi-ss docs: arm: convert docs to ReST and rename to *.rst 2019-07-15 09:20:24 -03:00
ux500 crypto: ux500 - Use spinlock_t instead of struct spinlock 2019-07-26 15:04:00 +10:00
virtio crypto: drivers - Use kmemdup rather than duplicating its implementation 2019-07-26 15:03:59 +10:00
vmx Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
atmel-aes-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atmel-aes.c crypto: atmel - switch to SPDX license identifiers 2018-09-04 11:37:04 +08:00
atmel-authenc.h crypto: atmel - switch to SPDX license identifiers 2018-09-04 11:37:04 +08:00
atmel-ecc.c crypto: atmel-ecc - factor out code that can be shared 2019-05-30 15:35:45 +08:00
atmel-i2c.c crypto: atmel - Fix sparse endianness warnings 2019-06-06 14:38:57 +08:00
atmel-i2c.h crypto: atmel - Fix sparse endianness warnings 2019-06-06 14:38:57 +08:00
atmel-sha204a.c crypto: atmel-i2c - add support for SHA204A random number generator 2019-05-30 15:35:45 +08:00
atmel-sha-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atmel-sha.c crypto: atmel - switch to SPDX license identifiers 2018-09-04 11:37:04 +08:00
atmel-tdes-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atmel-tdes.c crypto: atmel - remove set but not used variable 'alg_name' 2019-05-03 14:03:29 +08:00
exynos-rng.c crypto: drivers - simplify getting .drvdata 2018-04-28 16:09:35 +08:00
geode-aes.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
geode-aes.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hifn_795x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
img-hash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ixp4xx_crypto.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
Kconfig crypto: amcc - switch to AES library for GCM key derivation 2019-07-26 14:58:12 +10:00
Makefile crypto: atmel-i2c - add support for SHA204A random number generator 2019-05-30 15:35:45 +08:00
mxs-dcp.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
n2_asm.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
n2_core.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
n2_core.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
omap-aes-gcm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap-aes.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap-aes.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap-crypto.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap-crypto.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap-des.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap-sham.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
padlock-aes.c crypto: padlock/aes - switch to library version of key expansion routine 2019-07-26 14:56:02 +10:00
padlock-sha.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
picoxcell_crypto_regs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
picoxcell_crypto.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
qcom-rng.c crypto: qcom-rng - Add ACPI support 2018-07-27 19:04:32 +08:00
s5p-sss.c crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
sahara.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
talitos.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
talitos.h crypto: talitos - drop icv_ool 2019-07-03 22:13:11 +08:00