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From: James Morse <james.morse@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Marc Zyngier <marc.zyngier@arm.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Rob Herring <robh+dt@kernel.org>, Loc Ho <lho@apm.com>,
	Heyi Guo <guoheyi@huawei.com>,
	kvmarm@lists.cs.columbia.edu
Subject: [PATCH v6 13/16] arm64: acpi: Remove __init from acpi_psci_use_hvc() for use by SDEI
Date: Mon,  8 Jan 2018 15:38:15 +0000	[thread overview]
Message-ID: <20180108153818.22743-14-james.morse@arm.com> (raw)
In-Reply-To: <20180108153818.22743-1-james.morse@arm.com>

SDEI inherits the 'use hvc' bit that is also used by PSCI. PSCI does all
its initialisation early, SDEI does its late.

Remove the __init annotation from acpi_psci_use_hvc().

Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
The function name is unchanged as this bit is named 'PSCI_USE_HVC'
in table 5-37 of ACPIv6.2.

 arch/arm64/kernel/acpi.c | 2 +-
 include/linux/psci.h     | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index b3162715ed78..252396a96c78 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -117,7 +117,7 @@ bool __init acpi_psci_present(void)
 }
 
 /* Whether HVC must be used instead of SMC as the PSCI conduit */
-bool __init acpi_psci_use_hvc(void)
+bool acpi_psci_use_hvc(void)
 {
 	return acpi_gbl_FADT.arm_boot_flags & ACPI_FADT_PSCI_USE_HVC;
 }
diff --git a/include/linux/psci.h b/include/linux/psci.h
index 6306ab10af18..f724fd8c78e8 100644
--- a/include/linux/psci.h
+++ b/include/linux/psci.h
@@ -47,10 +47,11 @@ static inline int psci_dt_init(void) { return 0; }
 #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
 int __init psci_acpi_init(void);
 bool __init acpi_psci_present(void);
-bool __init acpi_psci_use_hvc(void);
+bool acpi_psci_use_hvc(void);
 #else
 static inline int psci_acpi_init(void) { return 0; }
 static inline bool acpi_psci_present(void) { return false; }
+static inline bool acpi_psci_use_hvc(void) {return false; }
 #endif
 
 #endif /* __LINUX_PSCI_H */
-- 
2.15.0

WARNING: multiple messages have this Message-ID (diff)
From: james.morse@arm.com (James Morse)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v6 13/16] arm64: acpi: Remove __init from acpi_psci_use_hvc() for use by SDEI
Date: Mon,  8 Jan 2018 15:38:15 +0000	[thread overview]
Message-ID: <20180108153818.22743-14-james.morse@arm.com> (raw)
In-Reply-To: <20180108153818.22743-1-james.morse@arm.com>

SDEI inherits the 'use hvc' bit that is also used by PSCI. PSCI does all
its initialisation early, SDEI does its late.

Remove the __init annotation from acpi_psci_use_hvc().

Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
The function name is unchanged as this bit is named 'PSCI_USE_HVC'
in table 5-37 of ACPIv6.2.

 arch/arm64/kernel/acpi.c | 2 +-
 include/linux/psci.h     | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index b3162715ed78..252396a96c78 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -117,7 +117,7 @@ bool __init acpi_psci_present(void)
 }
 
 /* Whether HVC must be used instead of SMC as the PSCI conduit */
-bool __init acpi_psci_use_hvc(void)
+bool acpi_psci_use_hvc(void)
 {
 	return acpi_gbl_FADT.arm_boot_flags & ACPI_FADT_PSCI_USE_HVC;
 }
diff --git a/include/linux/psci.h b/include/linux/psci.h
index 6306ab10af18..f724fd8c78e8 100644
--- a/include/linux/psci.h
+++ b/include/linux/psci.h
@@ -47,10 +47,11 @@ static inline int psci_dt_init(void) { return 0; }
 #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
 int __init psci_acpi_init(void);
 bool __init acpi_psci_present(void);
-bool __init acpi_psci_use_hvc(void);
+bool acpi_psci_use_hvc(void);
 #else
 static inline int psci_acpi_init(void) { return 0; }
 static inline bool acpi_psci_present(void) { return false; }
+static inline bool acpi_psci_use_hvc(void) {return false; }
 #endif
 
 #endif /* __LINUX_PSCI_H */
-- 
2.15.0

  parent reply	other threads:[~2018-01-08 15:38 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-08 15:38 [PATCH v6 00/16] arm64/firmware: Software Delegated Exception Interface James Morse
2018-01-08 15:38 ` James Morse
     [not found] ` <20180108153818.22743-1-james.morse-5wv7dgnIgG8@public.gmane.org>
2018-01-08 15:38   ` [PATCH v6 01/16] KVM: arm64: Store vcpu on the stack during __guest_enter() James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 02/16] KVM: arm/arm64: Convert kvm_host_cpu_state to a static per-cpu allocation James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 03/16] KVM: arm64: Change hyp_panic()s dependency on tpidr_el2 James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 04/16] arm64: alternatives: use tpidr_el2 on VHE hosts James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 05/16] KVM: arm64: Stop save/restoring host tpidr_el1 on VHE James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 06/16] Docs: dt: add devicetree binding for describing arm64 SDEI firmware James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 07/16] firmware: arm_sdei: Add driver for Software Delegated Exceptions James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 09/16] arm64: uaccess: Add PAN helper James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 10/16] arm64: kernel: Add arch-specific SDEI entry code and CPU masking James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 12/16] firmware: arm_sdei: add support for CPU private events James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 15/16] arm64: mmu: add the entry trampolines start/end section markers into sections.h James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38   ` [PATCH v6 16/16] arm64: sdei: Add trampoline code for remapping the kernel James Morse
2018-01-08 15:38     ` James Morse
2018-01-08 15:38 ` [PATCH v6 08/16] arm64: Add vmap_stack header file James Morse
2018-01-08 15:38   ` James Morse
2018-01-08 15:38 ` [PATCH v6 11/16] firmware: arm_sdei: Add support for CPU and system power states James Morse
2018-01-08 15:38   ` James Morse
     [not found]   ` <20180108153818.22743-12-james.morse-5wv7dgnIgG8@public.gmane.org>
2018-01-08 17:22     ` Lorenzo Pieralisi
2018-01-08 17:22       ` Lorenzo Pieralisi
2018-01-13 12:00       ` Catalin Marinas
2018-01-13 12:00         ` Catalin Marinas
2018-01-14 12:20         ` Lorenzo Pieralisi
2018-01-14 12:20           ` Lorenzo Pieralisi
2018-01-17 12:01           ` James Morse
2018-01-17 12:01             ` James Morse
2018-01-08 15:38 ` James Morse [this message]
2018-01-08 15:38   ` [PATCH v6 13/16] arm64: acpi: Remove __init from acpi_psci_use_hvc() for use by SDEI James Morse
2018-01-08 15:51   ` Lorenzo Pieralisi
2018-01-08 15:51     ` Lorenzo Pieralisi
2018-01-08 15:38 ` [PATCH v6 14/16] firmware: arm_sdei: Discover SDEI support via ACPI James Morse
2018-01-08 15:38   ` James Morse
     [not found]   ` <20180108153818.22743-15-james.morse-5wv7dgnIgG8@public.gmane.org>
2018-01-08 17:56     ` Lorenzo Pieralisi
2018-01-08 17:56       ` Lorenzo Pieralisi

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