From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: <jonathan.cameron@huawei.com>, <linux-mm@kvack.org>,
<linux-acpi@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: linuxarm@huawei.com, "Jérôme Glisse" <jglisse@redhat.com>,
"Keith Busch" <keith.busch@intel.com>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
"Michal Hocko" <mhocko@kernel.org>,
jcm@redhat.com, "Jonathan Cameron" <Jonathan.Cameron@huawei.com>
Subject: [PATCH 3/3] ACPI: Let ACPI know we support Generic Initiator Affinity Structures
Date: Tue, 12 Feb 2019 16:49:26 +0000 [thread overview]
Message-ID: <20190212164926.202-4-Jonathan.Cameron@huawei.com> (raw)
In-Reply-To: <20190212164926.202-1-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>
---
Note that this will need platform guards unless we make generic initiators
work on all ACPI platforms from the start.
drivers/acpi/bus.c | 1 +
include/linux/acpi.h | 1 +
2 files changed, 2 insertions(+)
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 5c093ce01bcd..461fb393346a 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -315,6 +315,7 @@ static void acpi_bus_osc_support(void)
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
+ capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GENERIC_INITIATOR_SUPPORT;
#ifdef CONFIG_X86
if (boot_cpu_has(X86_FEATURE_HWP)) {
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 87715f20b69a..760c6f3d57f0 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -498,6 +498,7 @@ 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;
--
2.18.0
prev parent reply other threads:[~2019-02-12 16:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-12 16:49 [RFC PATCH 0/3] ACPI: Support generic initiator proximity domains Jonathan Cameron
2019-02-12 16:49 ` [PATCH 1/3] ACPI: Support Generic Initator only domains Jonathan Cameron
2019-02-12 21:47 ` Keith Busch
2019-02-13 10:16 ` Jonathan Cameron
2019-02-12 16:49 ` [PATCH 2/3] arm64: Support Generic Initiator " Jonathan Cameron
2019-02-12 16:49 ` Jonathan Cameron [this message]
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