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authorHarald Freudenberger <freude@linux.ibm.com>2020-03-23 14:32:04 +0100
committerVasily Gorbik <gor@linux.ibm.com>2020-03-27 10:22:47 +0100
commit34515df25d7e5ae19f66eadfb1351a3178344f36 (patch)
treec9067b71c26c2fba3343a2b4af6243dde251f130 /drivers/s390/crypto/zcrypt_ep11misc.c
parent712fa5f294f377ee3103c36c178e7d62c65dd108 (diff)
downloadlinux-sh-34515df25d7e5ae19f66eadfb1351a3178344f36.tar.gz
s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc
Tests showed that it may happen that a 256k kmalloc may fail due to a temporary shortage on 256k slab entries. The find functions for cca and ep11 use a 256k array to fetch the states of all possible crypto cards and their domains in one piece. With the patch now kvmalloc is used to allocate this temporary memory as there is no need to have this memory area physical continuously. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/zcrypt_ep11misc.c')
-rw-r--r--drivers/s390/crypto/zcrypt_ep11misc.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/s390/crypto/zcrypt_ep11misc.c b/drivers/s390/crypto/zcrypt_ep11misc.c
index d4caf46ff9df..7dd987afcd55 100644
--- a/drivers/s390/crypto/zcrypt_ep11misc.c
+++ b/drivers/s390/crypto/zcrypt_ep11misc.c
@@ -1217,9 +1217,9 @@ int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain,
struct ep11_card_info eci;
/* fetch status of all crypto cards */
- device_status = kmalloc_array(MAX_ZDEV_ENTRIES_EXT,
- sizeof(struct zcrypt_device_status_ext),
- GFP_KERNEL);
+ device_status = kvmalloc_array(MAX_ZDEV_ENTRIES_EXT,
+ sizeof(struct zcrypt_device_status_ext),
+ GFP_KERNEL);
if (!device_status)
return -ENOMEM;
zcrypt_device_status_mask_ext(device_status);
@@ -1227,7 +1227,7 @@ int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain,
/* allocate 1k space for up to 256 apqns */
_apqns = kmalloc_array(256, sizeof(u32), GFP_KERNEL);
if (!_apqns) {
- kfree(device_status);
+ kvfree(device_status);
return -ENOMEM;
}
@@ -1282,7 +1282,7 @@ int ep11_findcard2(u32 **apqns, u32 *nr_apqns, u16 cardnr, u16 domain,
rc = 0;
}
- kfree(device_status);
+ kvfree(device_status);
return rc;
}
EXPORT_SYMBOL(ep11_findcard2);