[PATCH v10 3/6] ACPI: Let ACPI know we support Generic Initiator Affinity Structures
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: 2020-09-07 14:10:12
Also in:
linux-acpi, linux-arm-kernel, linux-mm, lkml
Subsystem:
acpi, the rest · Maintainers:
"Rafael J. Wysocki", Linus Torvalds
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