From: Alistair Popple <alistair@popple.id.au>
To: linuxppc-dev@lists.ozlabs.org
Cc: mikey@neuling.org, npiggin@gmail.com, aneesh.kumar@linux.ibm.com,
Alistair Popple <alistair@popple.id.au>
Subject: [PATCH v3 5/7] powerpc/dt_cpu_ftrs: Enable Prefixed Instructions
Date: Thu, 21 May 2020 11:43:39 +1000 [thread overview]
Message-ID: <20200521014341.29095-6-alistair@popple.id.au> (raw)
In-Reply-To: <20200521014341.29095-1-alistair@popple.id.au>
Prefix instructions have their own FSCR bit which needs to be enabled
via a CPU feature. The kernel will save the FSCR for problem state but
it needs to be enabled initially.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
---
arch/powerpc/kernel/dt_cpu_ftrs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c
index 677190f70cac..93c340906aad 100644
--- a/arch/powerpc/kernel/dt_cpu_ftrs.c
+++ b/arch/powerpc/kernel/dt_cpu_ftrs.c
@@ -628,6 +628,7 @@ static struct dt_cpu_feature_match __initdata
{"vector-binary128", feat_enable, 0},
{"vector-binary16", feat_enable, 0},
{"wait-v3", feat_enable, 0},
+ {"prefix-instructions", feat_enable, 0},
};
static bool __initdata using_dt_cpu_ftrs;
--
2.20.1
next prev parent reply other threads:[~2020-05-21 1:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-21 1:43 [PATCH v3 0/7] Base support for POWER10 Alistair Popple
2020-05-21 1:43 ` [PATCH v3 1/7] powerpc: Add new HWCAP bits Alistair Popple
2020-05-21 1:43 ` [PATCH v3 2/7] powerpc: Add support for ISA v3.1 Alistair Popple
2020-05-21 1:43 ` [PATCH v3 3/7] powerpc/dt_cpu_ftrs: Advertise support for ISA v3.1 if selected Alistair Popple
2020-05-21 1:43 ` [PATCH v3 4/7] powerpc/dt_cpu_ftrs: Set current thread fscr bits Alistair Popple
2022-03-09 8:25 ` Christophe Leroy
2022-03-09 10:28 ` Michael Ellerman
2020-05-21 1:43 ` Alistair Popple [this message]
2020-05-21 1:43 ` [PATCH v3 6/7] powerpc/dt_cpu_ftrs: Add MMA feature Alistair Popple
2020-05-21 17:17 ` Paul A. Clarke
2020-05-21 1:43 ` [PATCH v3 7/7] powerpc: Add POWER10 architected mode Alistair Popple
2020-06-09 5:28 ` [PATCH v3 0/7] Base support for POWER10 Michael Ellerman
2020-06-09 16:51 ` Murilo Opsfelder Araújo
2020-06-10 5:30 ` Michael Ellerman
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