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Subject[PATCH v3 0/3] Add multiprocessor wake-up support
Date
Add multiprocessor wakeup support using MADT ACPI table for x86
platforms. It uses mailbox based mechanism to wake up the APs. You
can get more details about the ACPI table and mailbox protocol in
Guest-Host-Communication Interface (GHCI) for Intel Trust Domain
Extensions (Intel TDX) specification document (sec 4.1)

https://software.intel.com/content/dam/develop/external/us/en/documents/intel-tdx-guest-hypervisor-communication-interface.pdf

Changes since v2:
* Moved acpi_wake_cpu_handler_update() definition to
arch/x86/kernel/apic/apic.c
* Added comments for WRITE_ONCE() usage.
* Added error handling support to prevent re-trigger of
acpi_wakeup_cpu() and to detect the failure case.

Changes since v1:
* Removed signoff from Rob and Erik.

Kuppuswamy Sathyanarayanan (3):
ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Mailbox Structure
ACPI/table: Print MADT Wake table information
x86/acpi, x86/boot: Add multiprocessor wake-up support

arch/x86/include/asm/apic.h | 3 ++
arch/x86/kernel/acpi/boot.c | 79 +++++++++++++++++++++++++++++++++++++
arch/x86/kernel/apic/apic.c | 8 ++++
drivers/acpi/tables.c | 11 ++++++
include/acpi/actbl2.h | 14 +++++++
5 files changed, 115 insertions(+)

--
2.25.1

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