From: Viresh Kumar <viresh.kumar@linaro.org> To: stable@vger.kernel.org Cc: Viresh Kumar <viresh.kumar@linaro.org>, Julien Thierry <Julien.Thierry@arm.com>, linux-arm-kernel@lists.infradead.org, Catalin Marinas <catalin.marinas@arm.com>, Marc Zyngier <marc.zyngier@arm.com>, Mark Rutland <mark.rutland@arm.com>, Will Deacon <will.deacon@arm.com>, Russell King <rmk+kernel@arm.linux.org.uk>, Vincent Guittot <vincent.guittot@linaro.org>, mark.brown@arm.com, guohanjun@huawei.com Subject: [PATCH ARM32 v4.4 V2 05/47] firmware/psci: Expose PSCI conduit Date: Thu, 1 Aug 2019 13:45:49 +0530 [thread overview] Message-ID: <9af0ed2a4a54549532931e98643daa5ed274ac8f.1564646727.git.viresh.kumar@linaro.org> (raw) In-Reply-To: <cover.1564646727.git.viresh.kumar@linaro.org> From: Marc Zyngier <marc.zyngier@arm.com> commit 09a8d6d48499f93e2abde691f5800081cd858726 upstream. In order to call into the firmware to apply workarounds, it is useful to find out whether we're using HVC or SMC. Let's expose this through the psci_ops. Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/firmware/psci.c | 28 +++++++++++++++++++++++----- include/linux/psci.h | 7 +++++++ 2 files changed, 30 insertions(+), 5 deletions(-) diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index 290f8982e7b3..7b2665f6b38d 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -54,7 +54,9 @@ bool psci_tos_resident_on(int cpu) return cpu == resident_cpu; } -struct psci_operations psci_ops; +struct psci_operations psci_ops = { + .conduit = PSCI_CONDUIT_NONE, +}; typedef unsigned long (psci_fn)(unsigned long, unsigned long, unsigned long, unsigned long); @@ -187,6 +189,22 @@ static unsigned long psci_migrate_info_up_cpu(void) 0, 0, 0); } +static void set_conduit(enum psci_conduit conduit) +{ + switch (conduit) { + case PSCI_CONDUIT_HVC: + invoke_psci_fn = __invoke_psci_fn_hvc; + break; + case PSCI_CONDUIT_SMC: + invoke_psci_fn = __invoke_psci_fn_smc; + break; + default: + WARN(1, "Unexpected PSCI conduit %d\n", conduit); + } + + psci_ops.conduit = conduit; +} + static int get_set_conduit_method(struct device_node *np) { const char *method; @@ -199,9 +217,9 @@ static int get_set_conduit_method(struct device_node *np) } if (!strcmp("hvc", method)) { - invoke_psci_fn = __invoke_psci_fn_hvc; + set_conduit(PSCI_CONDUIT_HVC); } else if (!strcmp("smc", method)) { - invoke_psci_fn = __invoke_psci_fn_smc; + set_conduit(PSCI_CONDUIT_SMC); } else { pr_warn("invalid \"method\" property: %s\n", method); return -EINVAL; @@ -463,9 +481,9 @@ int __init psci_acpi_init(void) pr_info("probing for conduit method from ACPI.\n"); if (acpi_psci_use_hvc()) - invoke_psci_fn = __invoke_psci_fn_hvc; + set_conduit(PSCI_CONDUIT_HVC); else - invoke_psci_fn = __invoke_psci_fn_smc; + set_conduit(PSCI_CONDUIT_SMC); return psci_probe(); } diff --git a/include/linux/psci.h b/include/linux/psci.h index 04b4d92c7791..e071a1b8ddb5 100644 --- a/include/linux/psci.h +++ b/include/linux/psci.h @@ -24,6 +24,12 @@ bool psci_tos_resident_on(int cpu); bool psci_power_state_loses_context(u32 state); bool psci_power_state_is_valid(u32 state); +enum psci_conduit { + PSCI_CONDUIT_NONE, + PSCI_CONDUIT_SMC, + PSCI_CONDUIT_HVC, +}; + struct psci_operations { u32 (*get_version)(void); int (*cpu_suspend)(u32 state, unsigned long entry_point); @@ -33,6 +39,7 @@ struct psci_operations { int (*affinity_info)(unsigned long target_affinity, unsigned long lowest_affinity_level); int (*migrate_info_type)(void); + enum psci_conduit conduit; }; extern struct psci_operations psci_ops; -- 2.21.0.rc0.269.g1a574e7a288b
WARNING: multiple messages have this Message-ID (diff)
From: Viresh Kumar <viresh.kumar@linaro.org> To: stable@vger.kernel.org Cc: Mark Rutland <mark.rutland@arm.com>, Julien Thierry <Julien.Thierry@arm.com>, Marc Zyngier <marc.zyngier@arm.com>, Viresh Kumar <viresh.kumar@linaro.org>, guohanjun@huawei.com, Will Deacon <will.deacon@arm.com>, mark.brown@arm.com, Catalin Marinas <catalin.marinas@arm.com>, Russell King <rmk+kernel@arm.linux.org.uk>, linux-arm-kernel@lists.infradead.org Subject: [PATCH ARM32 v4.4 V2 05/47] firmware/psci: Expose PSCI conduit Date: Thu, 1 Aug 2019 13:45:49 +0530 [thread overview] Message-ID: <9af0ed2a4a54549532931e98643daa5ed274ac8f.1564646727.git.viresh.kumar@linaro.org> (raw) In-Reply-To: <cover.1564646727.git.viresh.kumar@linaro.org> From: Marc Zyngier <marc.zyngier@arm.com> commit 09a8d6d48499f93e2abde691f5800081cd858726 upstream. In order to call into the firmware to apply workarounds, it is useful to find out whether we're using HVC or SMC. Let's expose this through the psci_ops. Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- drivers/firmware/psci.c | 28 +++++++++++++++++++++++----- include/linux/psci.h | 7 +++++++ 2 files changed, 30 insertions(+), 5 deletions(-) diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index 290f8982e7b3..7b2665f6b38d 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -54,7 +54,9 @@ bool psci_tos_resident_on(int cpu) return cpu == resident_cpu; } -struct psci_operations psci_ops; +struct psci_operations psci_ops = { + .conduit = PSCI_CONDUIT_NONE, +}; typedef unsigned long (psci_fn)(unsigned long, unsigned long, unsigned long, unsigned long); @@ -187,6 +189,22 @@ static unsigned long psci_migrate_info_up_cpu(void) 0, 0, 0); } +static void set_conduit(enum psci_conduit conduit) +{ + switch (conduit) { + case PSCI_CONDUIT_HVC: + invoke_psci_fn = __invoke_psci_fn_hvc; + break; + case PSCI_CONDUIT_SMC: + invoke_psci_fn = __invoke_psci_fn_smc; + break; + default: + WARN(1, "Unexpected PSCI conduit %d\n", conduit); + } + + psci_ops.conduit = conduit; +} + static int get_set_conduit_method(struct device_node *np) { const char *method; @@ -199,9 +217,9 @@ static int get_set_conduit_method(struct device_node *np) } if (!strcmp("hvc", method)) { - invoke_psci_fn = __invoke_psci_fn_hvc; + set_conduit(PSCI_CONDUIT_HVC); } else if (!strcmp("smc", method)) { - invoke_psci_fn = __invoke_psci_fn_smc; + set_conduit(PSCI_CONDUIT_SMC); } else { pr_warn("invalid \"method\" property: %s\n", method); return -EINVAL; @@ -463,9 +481,9 @@ int __init psci_acpi_init(void) pr_info("probing for conduit method from ACPI.\n"); if (acpi_psci_use_hvc()) - invoke_psci_fn = __invoke_psci_fn_hvc; + set_conduit(PSCI_CONDUIT_HVC); else - invoke_psci_fn = __invoke_psci_fn_smc; + set_conduit(PSCI_CONDUIT_SMC); return psci_probe(); } diff --git a/include/linux/psci.h b/include/linux/psci.h index 04b4d92c7791..e071a1b8ddb5 100644 --- a/include/linux/psci.h +++ b/include/linux/psci.h @@ -24,6 +24,12 @@ bool psci_tos_resident_on(int cpu); bool psci_power_state_loses_context(u32 state); bool psci_power_state_is_valid(u32 state); +enum psci_conduit { + PSCI_CONDUIT_NONE, + PSCI_CONDUIT_SMC, + PSCI_CONDUIT_HVC, +}; + struct psci_operations { u32 (*get_version)(void); int (*cpu_suspend)(u32 state, unsigned long entry_point); @@ -33,6 +39,7 @@ struct psci_operations { int (*affinity_info)(unsigned long target_affinity, unsigned long lowest_affinity_level); int (*migrate_info_type)(void); + enum psci_conduit conduit; }; extern struct psci_operations psci_ops; -- 2.21.0.rc0.269.g1a574e7a288b _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-08-01 8:19 UTC|newest] Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-01 8:15 [PATCH ARM32 v4.4 V2 00/47] V4.4 backport of arm32 Spectre patches Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 01/47] ARM: 8478/2: arm/arm64: add arm-smccc Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 02/47] arm/arm64: KVM: Advertise SMCCC v1.1 Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 03/47] arm64: KVM: Report SMCCC_ARCH_WORKAROUND_1 BP hardening support Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 04/47] drivers/firmware: Expose psci_get_version through psci_ops structure Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar [this message] 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 05/47] firmware/psci: Expose PSCI conduit Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 06/47] firmware/psci: Expose SMCCC version through psci_ops Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 07/47] arm/arm64: smccc: Make function identifiers an unsigned quantity Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 08/47] arm/arm64: smccc: Implement SMCCC v1.1 inline primitive Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 09/47] ARM: add more CPU part numbers for Cortex and Brahma B15 CPUs Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 10/47] ARM: bugs: prepare processor bug infrastructure Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 11/47] ARM: bugs: hook processor bug checking into SMP and suspend paths Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 12/47] ARM: bugs: add support for per-processor bug checking Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 13/47] ARM: spectre: add Kconfig symbol for CPUs vulnerable to Spectre Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 14/47] ARM: spectre-v2: harden branch predictor on context switches Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:15 ` [PATCH ARM32 v4.4 V2 15/47] ARM: spectre-v2: add Cortex A8 and A15 validation of the IBE bit Viresh Kumar 2019-08-01 8:15 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 16/47] ARM: spectre-v2: harden user aborts in kernel space Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 17/47] ARM: spectre-v2: add firmware based hardening Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 18/47] ARM: spectre-v2: warn about incorrect context switching functions Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 19/47] ARM: spectre-v1: add speculation barrier (csdb) macros Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 20/47] ARM: spectre-v1: add array_index_mask_nospec() implementation Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 21/47] ARM: spectre-v1: fix syscall entry Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 22/47] ARM: signal: copy registers using __copy_from_user() Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 23/47] ARM: vfp: use __copy_from_user() when restoring VFP state Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 24/47] ARM: oabi-compat: copy semops using __copy_from_user() Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 25/47] ARM: use __inttype() in get_user() Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 26/47] ARM: spectre-v1: use get_user() for __get_user() Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 27/47] ARM: spectre-v1: mitigate user accesses Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 28/47] ARM: 8789/1: signal: copy registers using __copy_to_user() Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 29/47] ARM: 8791/1: vfp: use __copy_to_user() when saving VFP state Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 30/47] ARM: 8792/1: oabi-compat: copy oabi events using __copy_to_user() Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 31/47] ARM: 8793/1: signal: replace __put_user_error with __put_user Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 32/47] ARM: 8794/1: uaccess: Prevent speculative use of the current addr_limit Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 33/47] ARM: uaccess: remove put_user() code duplication Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 34/47] ARM: 8795/1: spectre-v1.1: use put_user() for __put_user() Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 35/47] ARM: 8796/1: spectre-v1,v1.1: provide helpers for address sanitization Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 35/47] ARM: 8796/1: spectre-v1, v1.1: " Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 36/47] ARM: 8797/1: spectre-v1.1: harden __copy_to_user Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 37/47] ARM: 8809/1: proc-v7: fix Thumb annotation of cpu_v7_hvc_switch_mm Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 38/47] ARM: 8810/1: vfp: Fix wrong assignement to ufp_exc Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 39/47] ARM: make lookup_processor_type() non-__init Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 40/47] ARM: split out processor lookup Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 41/47] ARM: clean up per-processor check_bugs method call Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 42/47] ARM: add PROC_VTABLE and PROC_TABLE macros Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 43/47] arch: Introduce post-init read-only memory Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 44/47] ARM: 8595/2: apply more __ro_after_init Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 45/47] ARM: spectre-v2: per-CPU vtables to work around big.Little systems Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 46/47] ARM: ensure that processor vtables is not lost after boot Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-01 8:16 ` [PATCH ARM32 v4.4 V2 47/47] ARM: fix the cockup in the previous patch Viresh Kumar 2019-08-01 8:16 ` Viresh Kumar 2019-08-29 11:40 ` [PATCH ARM32 v4.4 V2 00/47] V4.4 backport of arm32 Spectre patches Viresh Kumar 2019-08-29 11:40 ` Viresh Kumar 2019-10-11 6:35 ` Viresh Kumar 2019-10-11 6:35 ` Viresh Kumar
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