From: Diana Craciun <diana.craciun@nxp.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: mpe@ellerman.id.au, oss@buserror.net, leoyang.li@nxp.com,
bharat.bhushan@nxp.com, Diana Craciun <diana.craciun@nxp.com>
Subject: [PATCH v4 3/6] powerpc/fsl: Make stf barrier PPC_BOOK3S_64 specific.
Date: Tue, 17 Jul 2018 14:09:54 +0300 [thread overview]
Message-ID: <1531825797-14236-4-git-send-email-diana.craciun@nxp.com> (raw)
In-Reply-To: <1531825797-14236-1-git-send-email-diana.craciun@nxp.com>
NXP Book3E platforms are not vulnerable to speculative store
bypass, so make the mitigations PPC_BOOK3S_64 specific.
Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
---
History:
v2-->v3
- new
arch/powerpc/kernel/security.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index 2ebfc5b..3a4e5c3 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c
@@ -169,6 +169,7 @@ ssize_t cpu_show_spectre_v2(struct device *dev, struct device_attribute *attr, c
return s.len;
}
+#ifdef CONFIG_PPC_BOOK3S_64
/*
* Store-forwarding barrier support.
*/
@@ -316,3 +317,5 @@ static __init int stf_barrier_debugfs_init(void)
}
device_initcall(stf_barrier_debugfs_init);
#endif /* CONFIG_DEBUG_FS */
+#endif /* CONFIG_PPC_BOOK3S_64 */
+
--
2.5.5
next prev parent reply other threads:[~2018-07-17 11:10 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-17 11:09 [PATCH v4 0/6] powerpc/fsl: Speculation barrier for NXP PowerPC Book3E Diana Craciun
2018-07-17 11:09 ` [PATCH v4 1/6] powerpc/fsl: Disable the speculation barrier from the command line Diana Craciun
2018-07-17 11:09 ` [PATCH v4 2/6] powerpc/fsl: Document nospectre_v1 kernel parameter Diana Craciun
2018-07-17 11:09 ` Diana Craciun [this message]
2018-07-17 11:09 ` [PATCH v4 4/6] powerpc/fsl: Enable cpu vulnerabilities reporting for NXP PPC BOOK3E Diana Craciun
2018-07-17 16:46 ` LEROY Christophe
2018-07-18 14:29 ` Diana Madalina Craciun
2018-07-18 16:02 ` LEROY Christophe
2018-07-19 12:05 ` Michael Ellerman
2018-07-20 15:34 ` Diana Madalina Craciun
2018-07-17 11:09 ` [PATCH v4 5/6] powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E Diana Craciun
2018-07-17 11:09 ` [PATCH v4 6/6] powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms Diana Craciun
2018-07-17 16:43 ` [PATCH v4 0/6] powerpc/fsl: Speculation barrier for NXP PowerPC Book3E LEROY Christophe
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