From: Diana Craciun <diana.craciun@nxp.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Diana Craciun <diana.craciun@nxp.com>
Subject: [PATCH 03/11 v2] powerpc/fsl: Fix spectre_v2 mitigations reporting
Date: Fri, 21 Dec 2018 19:30:29 +0200 [thread overview]
Message-ID: <1545413437-5538-4-git-send-email-diana.craciun@nxp.com> (raw)
In-Reply-To: <1545413437-5538-1-git-send-email-diana.craciun@nxp.com>
Currently for CONFIG_PPC_FSL_BOOK3E
cat /sys/devices/system/cpu/vulnerabilities/spectre_v2 reports:
"Mitigation: Software count cache flush" which is wrong. Fix it
to report vulnerable for now.
Signed-off-by: Diana Craciun <diana.craciun@nxp.com>
---
v1->v2
- no change
arch/powerpc/kernel/security.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/security.c b/arch/powerpc/kernel/security.c
index f6f469f..1b395b8 100644
--- a/arch/powerpc/kernel/security.c
+++ b/arch/powerpc/kernel/security.c
@@ -22,7 +22,7 @@ enum count_cache_flush_type {
COUNT_CACHE_FLUSH_SW = 0x2,
COUNT_CACHE_FLUSH_HW = 0x4,
};
-static enum count_cache_flush_type count_cache_flush_type;
+static enum count_cache_flush_type count_cache_flush_type = COUNT_CACHE_FLUSH_NONE;
bool barrier_nospec_enabled;
static bool no_nospec;
--
2.5.5
next prev parent reply other threads:[~2018-12-21 17:35 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-21 17:30 [PATCH 00/11 v2] powerpc/fsl: NXP PowerPC Spectre variant 2 workarounds Diana Craciun
2018-12-21 17:30 ` [PATCH 01/11 v2] powerpc/fsl: Add infrastructure to fixup branch predictor flush Diana Craciun
2018-12-21 17:30 ` [PATCH 02/11 v2] powerpc/fsl: Add macro to flush the branch predictor Diana Craciun
2018-12-21 17:30 ` Diana Craciun [this message]
2018-12-21 17:30 ` [PATCH 04/11 v2] powerpc/fsl: Emulate SPRN_BUCSR register Diana Craciun
2018-12-21 17:30 ` [PATCH 05/11 v2] powerpc/fsl: Add nospectre_v2 command line argument Diana Craciun
2018-12-21 17:30 ` [PATCH 06/11 v2] powerpc/fsl: Flush the branch predictor at each kernel entry (64bit) Diana Craciun
2018-12-21 17:30 ` [PATCH 07/11 v2] powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit) Diana Craciun
2018-12-21 17:30 ` [PATCH 08/11 v2] powerpc/fsl: Flush branch predictor when entering KVM Diana Craciun
2018-12-21 17:30 ` [PATCH 09/11 v2] powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used Diana Craciun
2018-12-21 17:30 ` [PATCH 10/11 v2] powerpc/fsl: Update Spectre v2 reporting Diana Craciun
2018-12-21 17:30 ` [PATCH 11/11 v2] powerpc/fsl: Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg Diana Craciun
2018-12-22 10:07 ` [PATCH 00/11 v2] powerpc/fsl: NXP PowerPC Spectre variant 2 workarounds Michael Ellerman
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