From: Mark Rutland <mark.rutland@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: mark.rutland@arm.com, lorenzo.pieralisi@arm.com,
suzuki.poulose@arm.com, marc.zyngier@arm.com,
catalin.marinas@arm.com, will.deacon@arm.com,
linux@armlinux.org.uk, james.morse@arm.com, robin.murphy@arm.com
Subject: [PATCHv3 3/6] arm: spectre-v2: use arm_smccc_1_1_get_conduit()
Date: Fri, 9 Aug 2019 14:22:42 +0100 [thread overview]
Message-ID: <20190809132245.43505-4-mark.rutland@arm.com> (raw)
In-Reply-To: <20190809132245.43505-1-mark.rutland@arm.com>
Now that we have arm_smccc_1_1_get_conduit(), we can hide the PSCI
implementation details from the arm spectre-v2 code, so let's do so.
As arm_smccc_1_1_get_conduit() implicitly checks that the SMCCC version
is at least SMCCC_VERSION_1_1, we no longer need to check this
explicitly where switch statements have a default case.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
---
arch/arm/mm/proc-v7-bugs.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mm/proc-v7-bugs.c b/arch/arm/mm/proc-v7-bugs.c
index 9a07916af8dd..54d87506d3b5 100644
--- a/arch/arm/mm/proc-v7-bugs.c
+++ b/arch/arm/mm/proc-v7-bugs.c
@@ -1,7 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/arm-smccc.h>
#include <linux/kernel.h>
-#include <linux/psci.h>
#include <linux/smp.h>
#include <asm/cp15.h>
@@ -75,11 +74,8 @@ static void cpu_v7_spectre_init(void)
case ARM_CPU_PART_CORTEX_A72: {
struct arm_smccc_res res;
- if (psci_ops.smccc_version == SMCCC_VERSION_1_0)
- break;
-
- switch (psci_ops.conduit) {
- case PSCI_CONDUIT_HVC:
+ switch (arm_smccc_1_1_get_conduit()) {
+ case SMCCC_CONDUIT_HVC:
arm_smccc_1_1_hvc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
ARM_SMCCC_ARCH_WORKAROUND_1, &res);
if ((int)res.a0 != 0)
@@ -90,7 +86,7 @@ static void cpu_v7_spectre_init(void)
spectre_v2_method = "hypervisor";
break;
- case PSCI_CONDUIT_SMC:
+ case SMCCC_CONDUIT_SMC:
arm_smccc_1_1_smc(ARM_SMCCC_ARCH_FEATURES_FUNC_ID,
ARM_SMCCC_ARCH_WORKAROUND_1, &res);
if ((int)res.a0 != 0)
--
2.11.0
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next prev parent reply other threads:[~2019-08-09 13:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-09 13:22 [PATCHv3 0/6] arm/arm64: SMCCC conduit cleanup Mark Rutland
2019-08-09 13:22 ` [PATCHv3 1/6] arm/arm64: smccc/psci: add arm_smccc_1_1_get_conduit() Mark Rutland
2019-08-12 15:03 ` Dave Martin
2019-08-12 15:06 ` Mark Rutland
2019-08-12 15:10 ` Dave Martin
2019-08-12 15:26 ` Mark Rutland
2019-08-13 11:38 ` Dave Martin
2019-08-09 13:22 ` [PATCHv3 2/6] arm64: errata: use arm_smccc_1_1_get_conduit() Mark Rutland
2019-08-09 13:22 ` Mark Rutland [this message]
2019-10-11 14:02 ` [PATCHv3 3/6] arm: spectre-v2: " Catalin Marinas
2019-08-09 13:22 ` [PATCHv3 4/6] firmware/psci: use common SMCCC_CONDUIT_* Mark Rutland
2019-08-09 13:22 ` [PATCHv3 5/6] firmware: arm_sdei: " Mark Rutland
2019-08-09 13:22 ` [PATCHv3 6/6] smccc: make 1.1 macros value-returning Mark Rutland
2019-08-15 16:42 ` Will Deacon
2019-08-19 10:44 ` Mark Rutland
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