From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Diana Craciun <diana.craciun@nxp.com>,
linuxppc-dev@lists.ozlabs.org, Sasha Levin <sashal@kernel.org>
Subject: [PATCH AUTOSEL 5.0 076/262] powerpc/fsl: Fix the flush of branch predictor.
Date: Wed, 27 Mar 2019 13:58:51 -0400 [thread overview]
Message-ID: <20190327180158.10245-76-sashal@kernel.org> (raw)
In-Reply-To: <20190327180158.10245-1-sashal@kernel.org>
From: Christophe Leroy <christophe.leroy@c-s.fr>
[ Upstream commit 27da80719ef132cf8c80eb406d5aeb37dddf78cc ]
The commit identified below adds MC_BTB_FLUSH macro only when
CONFIG_PPC_FSL_BOOK3E is defined. This results in the following error
on some configs (seen several times with kisskb randconfig_defconfig)
arch/powerpc/kernel/exceptions-64e.S:576: Error: Unrecognized opcode: `mc_btb_flush'
make[3]: *** [scripts/Makefile.build:367: arch/powerpc/kernel/exceptions-64e.o] Error 1
make[2]: *** [scripts/Makefile.build:492: arch/powerpc/kernel] Error 2
make[1]: *** [Makefile:1043: arch/powerpc] Error 2
make: *** [Makefile:152: sub-make] Error 2
This patch adds a blank definition of MC_BTB_FLUSH for other cases.
Fixes: 10c5e83afd4a ("powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)")
Cc: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Diana Craciun <diana.craciun@nxp.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/kernel/exceptions-64e.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index afb638778f44..447defdd4503 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -349,6 +349,7 @@ ret_from_mc_except:
#define GEN_BTB_FLUSH
#define CRIT_BTB_FLUSH
#define DBG_BTB_FLUSH
+#define MC_BTB_FLUSH
#define GDBELL_BTB_FLUSH
#endif
--
2.19.1
next prev parent reply other threads:[~2019-03-27 18:16 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190327180158.10245-1-sashal@kernel.org>
2019-03-27 17:57 ` [PATCH AUTOSEL 5.0 015/262] memblock: memblock_phys_alloc_try_nid(): don't panic Sasha Levin
2019-03-28 5:57 ` Mike Rapoport
2019-04-04 0:57 ` Sasha Levin
2019-03-27 17:58 ` [PATCH AUTOSEL 5.0 061/262] mm/resource: Return real error codes from walk failures Sasha Levin
2019-03-27 17:58 ` [PATCH AUTOSEL 5.0 072/262] powerpc/powernv/ioda: Fix locked_vm counting for memory used by IOMMU tables Sasha Levin
2019-03-27 17:58 ` Sasha Levin [this message]
2019-03-27 17:58 ` [PATCH AUTOSEL 5.0 080/262] powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc Sasha Levin
2019-03-27 17:59 ` [PATCH AUTOSEL 5.0 086/262] powerpc/hugetlb: Handle mmap_min_addr correctly in get_unmapped_area callback Sasha Levin
2019-03-27 17:59 ` [PATCH AUTOSEL 5.0 106/262] powerpc/44x: Force PCI on for CURRITUCK Sasha Levin
2019-03-27 17:59 ` [PATCH AUTOSEL 5.0 118/262] SoC: imx-sgtl5000: add missing put_device() Sasha Levin
2019-03-27 18:00 ` [PATCH AUTOSEL 5.0 174/262] powerpc/ptrace: Mitigate potential Spectre v1 Sasha Levin
2019-03-27 18:00 ` [PATCH AUTOSEL 5.0 183/262] ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe Sasha Levin
2019-03-27 18:00 ` [PATCH AUTOSEL 5.0 202/262] powerpc/64s: Clear on-stack exception marker upon exception return Sasha Levin
2019-03-27 18:01 ` [PATCH AUTOSEL 5.0 206/262] powerpc/pseries: Perform full re-add of CPU for topology update post-migration Sasha Levin
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