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contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,sami.mujawar@arm.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: Y6yU5U8tTVxqlCJxs1enPcfwx1787277AA= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1695393337417100003 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Bugzilla: 3706 'Code First - MADT GICC new flags' On ARM systems physical CPU hotplug is not supported. All CPUs are considered present and this is true throughout the system uptime. The ECR 2285 introduces a new 'online-capable' flag in the GICC structure flags in ACPI 6.5, to signal firmware policy (CPU is not enabled but it can be enabled and onlined). This enables OSPM to support virtual CPU hotplug (on virtual platforms for instance). This ECR also updates the MADT table revision to 6 to reflect the ACPI 6.5 changes. Therefore, update the MADT table revision to match the value as specified in ACPI 6.5. Signed-off-by: Sami Mujawar Reviewed-by: Pierre Gondois --- Notes: v3: - No code change from v2 patch series. [SAMI] =20 v2: - No code change from v1 patch series. [SAMI] MdePkg/Include/IndustryStandard/Acpi65.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/MdePkg/Include/IndustryStandard/Acpi65.h b/MdePkg/Include/Indu= stryStandard/Acpi65.h index 6caadf2404984aa472f748293b8e80dd120f280c..9e2828bc048bcd9b2bf0529d00b= daf8bf04bf543 100644 --- a/MdePkg/Include/IndustryStandard/Acpi65.h +++ b/MdePkg/Include/IndustryStandard/Acpi65.h @@ -2,7 +2,7 @@ ACPI 6.5 definitions from the ACPI Specification Revision 6.5 Aug, 2022. =20 Copyright (c) 2017 - 2022, Intel Corporation. All rights reserved.
- Copyright (c) 2019 - 2021, ARM Ltd. All rights reserved.
+ Copyright (c) 2019 - 2023, ARM Ltd. All rights reserved.
Copyright (c) 2023, Loongson Technology Corporation Limited. All rights = reserved.
=20 SPDX-License-Identifier: BSD-2-Clause-Patent @@ -533,6 +533,7 @@ typedef struct { #define EFI_ACPI_6_5_GIC_ENABLED BIT0 #define EFI_ACPI_6_5_PERFORMANCE_INTERRUPT_MODEL BIT1 #define EFI_ACPI_6_5_VGIC_MAINTENANCE_INTERRUPT_MODE_FLAGS BIT2 +#define EFI_ACPI_6_5_GIC_ONLINE_CAPABLE BIT3 =20 /// /// GIC Distributor Structure --=20 'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)' -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#108993): https://edk2.groups.io/g/devel/message/108993 Mute This Topic: https://groups.io/mt/101522258/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-