linux-kernel - [PATCH 3/3] selftests: vDSO: chacha: Provide default definition of HWCAP_S390

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250324-s390-vdso-hwcap-v1-3-cb9ad001ceba@linutronix.de>
Date: Mon, 24 Mar 2025 15:03:17 +0100
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Shuah Khan <shuah@...nel.org>, "Jason A. Donenfeld" <Jason@...c4.com>, 
 Heiko Carstens <hca@...ux.ibm.com>, Andy Lutomirski <luto@...nel.org>, 
 Thomas Gleixner <tglx@...utronix.de>, 
 Vincenzo Frascino <vincenzo.frascino@....com>
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Shuah Khan <skhan@...uxfoundation.org>, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH 3/3] selftests: vDSO: chacha: Provide default definition of
 HWCAP_S390_VXRS

s390 does not provide a hwcap.h UAPI header.

Add an inline definition for the constant HWCAP_S390_VXRS until a proper
UAPI header is introduced.

Fixes: 210860e7f733 ("selftests: vDSO: check cpu caps before running chacha test")
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
 tools/testing/selftests/vDSO/vdso_test_chacha.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/vDSO/vdso_test_chacha.c b/tools/testing/selftests/vDSO/vdso_test_chacha.c
index fd5c5108b42f04ec459d39b74f33edc2ceafbba1..0ce5189718ce35b0a4d69b71559db8379b598b93 100644
--- a/tools/testing/selftests/vDSO/vdso_test_chacha.c
+++ b/tools/testing/selftests/vDSO/vdso_test_chacha.c
@@ -19,6 +19,9 @@ static bool cpu_has_capabilities(void)
 	return getauxval(AT_HWCAP) & HWCAP_ASIMD;
 }
 #elif defined(__s390x__)
+#ifndef HWCAP_S390_VXRS
+#define HWCAP_S390_VXRS	(1 << 11)
+#endif
 static bool cpu_has_capabilities(void)
 {
 	return getauxval(AT_HWCAP) & HWCAP_S390_VXRS;

-- 
2.48.1