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From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: <linux-mm@kvack.org>, <linux-acpi@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>, <x86@kernel.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	<rafael@kernel.org>, Ingo Molnar <mingo@redhat.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	<linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>, <linuxarm@huawei.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Brice Goglin <Brice.Goglin@inria.fr>,
	"Sean V Kelley" <sean.v.kelley@linux.intel.com>,
	<linux-api@vger.kernel.org>, "Borislav Petkov" <bp@alien8.de>,
	Hanjun Guo <guohanjun@huawei.com>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>
Subject: [PATCH v12 3/6] ACPI: Let ACPI know we support Generic Initiator Affinity Structures
Date: Wed, 30 Sep 2020 22:05:44 +0800	[thread overview]
Message-ID: <20200930140547.840251-4-Jonathan.Cameron@huawei.com> (raw)
In-Reply-To: <20200930140547.840251-1-Jonathan.Cameron@huawei.com>

Until we tell ACPI that we support generic initiators, it will have
to operate in fall back domain mode and all _PXM entries should
be on existing non GI domains.

This patch sets the relevant OSC bit to make that happen.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/acpi/bus.c   | 4 ++++
 include/linux/acpi.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 54002670cb7a..113c661eb848 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -303,7 +303,11 @@ static void acpi_bus_osc_support(void)
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
 
+#ifdef CONFIG_ARM64
+	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT;
+#endif
 #ifdef CONFIG_X86
+	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT;
 	if (boot_cpu_has(X86_FEATURE_HWP)) {
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT;
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT;
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 1e4cdc6c7ae2..1321518a53d2 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -546,6 +546,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 #define OSC_SB_PCLPI_SUPPORT			0x00000080
 #define OSC_SB_OSLPI_SUPPORT			0x00000100
 #define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT		0x00001000
+#define OSC_SB_GENERIC_INITIATOR_SUPPORT	0x00002000
 
 extern bool osc_sb_apei_support_acked;
 extern bool osc_pc_lpi_support_confirmed;
-- 
2.19.1


WARNING: multiple messages have this Message-ID (diff)
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: <linux-mm@kvack.org>, <linux-acpi@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>, <x86@kernel.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	<rafael@kernel.org>, Ingo Molnar <mingo@redhat.com>
Cc: linux-api@vger.kernel.org, Hanjun Guo <guohanjun@huawei.com>,
	linux-kernel@vger.kernel.org, linuxarm@huawei.com,
	Borislav Petkov <bp@alien8.de>,
	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	Brice Goglin <Brice.Goglin@inria.fr>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Dan Williams <dan.j.williams@intel.com>,
	Sean V Kelley <sean.v.kelley@linux.intel.com>
Subject: [PATCH v12 3/6] ACPI: Let ACPI know we support Generic Initiator Affinity Structures
Date: Wed, 30 Sep 2020 22:05:44 +0800	[thread overview]
Message-ID: <20200930140547.840251-4-Jonathan.Cameron@huawei.com> (raw)
In-Reply-To: <20200930140547.840251-1-Jonathan.Cameron@huawei.com>

Until we tell ACPI that we support generic initiators, it will have
to operate in fall back domain mode and all _PXM entries should
be on existing non GI domains.

This patch sets the relevant OSC bit to make that happen.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/acpi/bus.c   | 4 ++++
 include/linux/acpi.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 54002670cb7a..113c661eb848 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -303,7 +303,11 @@ static void acpi_bus_osc_support(void)
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
 	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
 
+#ifdef CONFIG_ARM64
+	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT;
+#endif
 #ifdef CONFIG_X86
+	capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT;
 	if (boot_cpu_has(X86_FEATURE_HWP)) {
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT;
 		capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT;
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 1e4cdc6c7ae2..1321518a53d2 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -546,6 +546,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 #define OSC_SB_PCLPI_SUPPORT			0x00000080
 #define OSC_SB_OSLPI_SUPPORT			0x00000100
 #define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT		0x00001000
+#define OSC_SB_GENERIC_INITIATOR_SUPPORT	0x00002000
 
 extern bool osc_sb_apei_support_acked;
 extern bool osc_pc_lpi_support_confirmed;
-- 
2.19.1


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  parent reply	other threads:[~2020-09-30 14:09 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-30 14:05 [PATCH v12 0/6] ACPI: Support Generic Initiator proximity domains Jonathan Cameron
2020-09-30 14:05 ` Jonathan Cameron
2020-09-30 14:05 ` [PATCH v12 1/6] ACPI: Support Generic Initiator only domains Jonathan Cameron
2020-09-30 14:05   ` Jonathan Cameron
2020-09-30 14:05 ` [PATCH v12 2/6] x86: Support Generic Initiator only proximity domains Jonathan Cameron
2020-09-30 14:05   ` Jonathan Cameron
2020-09-30 15:51   ` Borislav Petkov
2020-09-30 15:51     ` Borislav Petkov
2020-09-30 14:05 ` Jonathan Cameron [this message]
2020-09-30 14:05   ` [PATCH v12 3/6] ACPI: Let ACPI know we support Generic Initiator Affinity Structures Jonathan Cameron
2020-09-30 14:05 ` [PATCH v12 4/6] ACPI: HMAT: Fix handling of changes from ACPI 6.2 to ACPI 6.3 Jonathan Cameron
2020-09-30 14:05   ` Jonathan Cameron
2020-09-30 14:05 ` [PATCH v12 5/6] node: Add access1 class to represent CPU to memory characteristics Jonathan Cameron
2020-09-30 14:05   ` Jonathan Cameron
2020-09-30 14:05 ` [PATCH v12 6/6] docs: mm: numaperf.rst Add brief description for access class 1 Jonathan Cameron
2020-09-30 14:05   ` Jonathan Cameron
2020-10-02 16:55 ` [PATCH v12 0/6] ACPI: Support Generic Initiator proximity domains Rafael J. Wysocki
2020-10-02 16:55   ` Rafael J. Wysocki
2020-10-02 16:55   ` Rafael J. Wysocki

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