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[RFC,23/32] ACPICA: Add new MADT GICC flags fields [code first?]

Message ID 20230203135043.409192-24-james.morse@arm.com (mailing list archive)
State RFC, archived
Headers show
Series ACPI/arm64: add support for virtual cpuhotplug | expand

Commit Message

James Morse Feb. 3, 2023, 1:50 p.m. UTC 
Add the new flag field to the MADT's GICC structure.

'Online Capable' indicates a disabled CPU can be enabled later.

Signed-off-by: James Morse <james.morse@arm.com>
---
This patch probably needs to go via the upstream acpica project,
but is included here so the feature can be tested.
---
 include/acpi/actbl2.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index b2973dbe37ee..9b1c15c56db3 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1040,6 +1040,7 @@  struct acpi_madt_generic_interrupt {
 /* ACPI_MADT_ENABLED                    (1)      Processor is usable if set */
 #define ACPI_MADT_PERFORMANCE_IRQ_MODE  (1<<1)	/* 01: Performance Interrupt Mode */
 #define ACPI_MADT_VGIC_IRQ_MODE         (1<<2)	/* 02: VGIC Maintenance Interrupt mode */
+#define ACPI_MADT_GICC_CPU_CAPABLE      (1<<3)	/* 03: CPU is online capable */
 
 /* 12: Generic Distributor (ACPI 5.0 + ACPI 6.0 changes) */