From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Cameron Subject: [PATCH 3/3] ACPI: Let ACPI know we support Generic Initiator Affinity Structures Date: Tue, 12 Feb 2019 16:49:26 +0000 Message-ID: <20190212164926.202-4-Jonathan.Cameron@huawei.com> References: <20190212164926.202-1-Jonathan.Cameron@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20190212164926.202-1-Jonathan.Cameron@huawei.com> Sender: linux-kernel-owner@vger.kernel.org To: jonathan.cameron@huawei.com, linux-mm@kvack.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linuxarm@huawei.com, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Keith Busch , "Rafael J . Wysocki" , Michal Hocko , jcm@redhat.com, Jonathan Cameron List-Id: linux-acpi@vger.kernel.org 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 --- 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