From d6610bc2adc19a632cb14fc094378cbf5cd60868 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Thu, 9 Jan 2014 17:36:32 +0100 Subject: acpi: ich9: add CPU hotplug handling to Q35 machine .. use IO port 0cd8-0xcf7 range for CPU present bitmap Signed-off-by: Igor Mammedov Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- docs/specs/acpi_cpu_hotplug.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'docs/specs') diff --git a/docs/specs/acpi_cpu_hotplug.txt b/docs/specs/acpi_cpu_hotplug.txt index f6f5774..340b751 100644 --- a/docs/specs/acpi_cpu_hotplug.txt +++ b/docs/specs/acpi_cpu_hotplug.txt @@ -10,7 +10,9 @@ ACPI GPE block (IO ports 0xafe0-0xafe3, byte access): Generic ACPI GPE block. Bit 2 (GPE.2) used to notify CPU hot-add/remove event to ACPI BIOS, via SCI interrupt. -CPU present bitmap (IO port 0xaf00-0xaf1f, 1-byte access): +CPU present bitmap for: + ICH9-LPC (IO port 0x0cd8-0xcf7, 1-byte access) + PIIX-PM (IO port 0xaf00-0xaf1f, 1-byte access) --------------------------------------------------------------- One bit per CPU. Bit position reflects corresponding CPU APIC ID. Read-only. -- cgit v1.1