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[v8,3/6] ACPI: Let ACPI know we support Generic Initiator Affinity Structures

Message ID 20200818170417.1515975-4-Jonathan.Cameron@huawei.com
State New
Headers show
Series ACPI: Support Generic Initiator proximity domains | expand

Commit Message

Jonathan Cameron Aug. 18, 2020, 5:04 p.m. UTC 
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   | 1 +
 include/linux/acpi.h | 1 +
 2 files changed, 2 insertions(+)

-- 
2.19.1
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Patch

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 54002670cb7a..0ac96fb67515 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -302,6 +302,7 @@  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 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;