linux-kernel - [PATCH 5.4 102/475] crypto: vmx

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Date:   Thu, 14 Apr 2022 15:08:07 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Nicolai Stange <nstange@...e.de>,
        Petr Vorel <pvorel@...e.cz>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 102/475] crypto: vmx - add missing dependencies

From: Petr Vorel <pvorel@...e.cz>

[ Upstream commit 647d41d3952d726d4ae49e853a9eff68ebad3b3f ]

vmx-crypto module depends on CRYPTO_AES, CRYPTO_CBC, CRYPTO_CTR or
CRYPTO_XTS, thus add them.

These dependencies are likely to be enabled, but if
CRYPTO_DEV_VMX=y && !CRYPTO_MANAGER_DISABLE_TESTS
and either of CRYPTO_AES, CRYPTO_CBC, CRYPTO_CTR or CRYPTO_XTS is built
as module or disabled, alg_test() from crypto/testmgr.c complains during
boot about failing to allocate the generic fallback implementations
(2 == ENOENT):

[    0.540953] Failed to allocate xts(aes) fallback: -2
[    0.541014] alg: skcipher: failed to allocate transform for p8_aes_xts: -2
[    0.541120] alg: self-tests for p8_aes_xts (xts(aes)) failed (rc=-2)
[    0.544440] Failed to allocate ctr(aes) fallback: -2
[    0.544497] alg: skcipher: failed to allocate transform for p8_aes_ctr: -2
[    0.544603] alg: self-tests for p8_aes_ctr (ctr(aes)) failed (rc=-2)
[    0.547992] Failed to allocate cbc(aes) fallback: -2
[    0.548052] alg: skcipher: failed to allocate transform for p8_aes_cbc: -2
[    0.548156] alg: self-tests for p8_aes_cbc (cbc(aes)) failed (rc=-2)
[    0.550745] Failed to allocate transformation for 'aes': -2
[    0.550801] alg: cipher: Failed to load transform for p8_aes: -2
[    0.550892] alg: self-tests for p8_aes (aes) failed (rc=-2)

Fixes: c07f5d3da643 ("crypto: vmx - Adding support for XTS")
Fixes: d2e3ae6f3aba ("crypto: vmx - Enabling VMX module for PPC64")

Suggested-by: Nicolai Stange <nstange@...e.de>
Signed-off-by: Petr Vorel <pvorel@...e.cz>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/crypto/vmx/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/vmx/Kconfig b/drivers/crypto/vmx/Kconfig
index c85fab7ef0bd..b2c28b87f14b 100644
--- a/drivers/crypto/vmx/Kconfig
+++ b/drivers/crypto/vmx/Kconfig
@@ -2,7 +2,11 @@
 config CRYPTO_DEV_VMX_ENCRYPT
 	tristate "Encryption acceleration support on P8 CPU"
 	depends on CRYPTO_DEV_VMX
+	select CRYPTO_AES
+	select CRYPTO_CBC
+	select CRYPTO_CTR
 	select CRYPTO_GHASH
+	select CRYPTO_XTS
 	default m
 	help
 	  Support for VMX cryptographic acceleration instructions on Power8 CPU.
-- 
2.34.1