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authorLinus Torvalds <torvalds@linux-foundation.org>2023-02-22 05:10:50 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-02-22 05:10:50 +0300
commit36289a03bcd3aabdf66de75cb6d1b4ee15726438 (patch)
tree1230c6391678f9255f74d7a4f65e95ea8a39d452 /drivers/crypto/ccp/sev-dev.c
parent69308402ca6f5b80a5a090ade0b13bd146891420 (diff)
parent8b84475318641c2b89320859332544cf187e1cbd (diff)
downloadlinux-36289a03bcd3aabdf66de75cb6d1b4ee15726438.tar.xz
Merge tag 'v6.3-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu: "API: - Use kmap_local instead of kmap_atomic - Change request callback to take void pointer - Print FIPS status in /proc/crypto (when enabled) Algorithms: - Add rfc4106/gcm support on arm64 - Add ARIA AVX2/512 support on x86 Drivers: - Add TRNG driver for StarFive SoC - Delete ux500/hash driver (subsumed by stm32/hash) - Add zlib support in qat - Add RSA support in aspeed" * tag 'v6.3-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (156 commits) crypto: x86/aria-avx - Do not use avx2 instructions crypto: aspeed - Fix modular aspeed-acry crypto: hisilicon/qm - fix coding style issues crypto: hisilicon/qm - update comments to match function crypto: hisilicon/qm - change function names crypto: hisilicon/qm - use min() instead of min_t() crypto: hisilicon/qm - remove some unused defines crypto: proc - Print fips status crypto: crypto4xx - Call dma_unmap_page when done crypto: octeontx2 - Fix objects shared between several modules crypto: nx - Fix sparse warnings crypto: ecc - Silence sparse warning tls: Pass rec instead of aead_req into tls_encrypt_done crypto: api - Remove completion function scaffolding tls: Remove completion function scaffolding tipc: Remove completion function scaffolding net: ipv6: Remove completion function scaffolding net: ipv4: Remove completion function scaffolding net: macsec: Remove completion function scaffolding dm: Remove completion function scaffolding ...
Diffstat (limited to 'drivers/crypto/ccp/sev-dev.c')
-rw-r--r--drivers/crypto/ccp/sev-dev.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index 06fc7156c04f..e2f25926eb51 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -26,6 +26,7 @@
#include <linux/fs_struct.h>
#include <asm/smp.h>
+#include <asm/cacheflush.h>
#include "psp-dev.h"
#include "sev-dev.h"
@@ -56,6 +57,7 @@ MODULE_PARM_DESC(psp_init_on_probe, " if true, the PSP will be initialized on m
MODULE_FIRMWARE("amd/amd_sev_fam17h_model0xh.sbin"); /* 1st gen EPYC */
MODULE_FIRMWARE("amd/amd_sev_fam17h_model3xh.sbin"); /* 2nd gen EPYC */
MODULE_FIRMWARE("amd/amd_sev_fam19h_model0xh.sbin"); /* 3rd gen EPYC */
+MODULE_FIRMWARE("amd/amd_sev_fam19h_model1xh.sbin"); /* 4th gen EPYC */
static bool psp_dead;
static int psp_timeout;
@@ -881,7 +883,14 @@ static int sev_ioctl_do_get_id2(struct sev_issue_cmd *argp)
input_address = (void __user *)input.address;
if (input.address && input.length) {
- id_blob = kzalloc(input.length, GFP_KERNEL);
+ /*
+ * The length of the ID shouldn't be assumed by software since
+ * it may change in the future. The allocation size is limited
+ * to 1 << (PAGE_SHIFT + MAX_ORDER - 1) by the page allocator.
+ * If the allocation fails, simply return ENOMEM rather than
+ * warning in the kernel log.
+ */
+ id_blob = kzalloc(input.length, GFP_KERNEL | __GFP_NOWARN);
if (!id_blob)
return -ENOMEM;
@@ -1327,7 +1336,10 @@ void sev_pci_init(void)
/* Obtain the TMR memory area for SEV-ES use */
sev_es_tmr = sev_fw_alloc(SEV_ES_TMR_SIZE);
- if (!sev_es_tmr)
+ if (sev_es_tmr)
+ /* Must flush the cache before giving it to the firmware */
+ clflush_cache_range(sev_es_tmr, SEV_ES_TMR_SIZE);
+ else
dev_warn(sev->dev,
"SEV: TMR allocation failed, SEV-ES support unavailable\n");