Messages in this thread | | | Subject | Re: [PATCH v5 1/1] x86/acpi, x86/boot: Add multiprocessor wake-up support | From | "Kuppuswamy, Sathyanarayanan" <> | Date | Mon, 24 May 2021 06:42:53 -0700 |
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On 5/23/21 11:40 PM, Mika Penttilä wrote: > > So this isn't supporting suspend/resume if AP cannot started again?
Yes. You are correct. It can be used only once per AP. Please find the spec reference below.
/* * According to the ACPI specification r6.4, sec 5.2.12.19, the * mailbox-based wakeup mechanism cannot be used more than once * for the same CPU, so skip sending wake commands to already * awake CPU. */
-- Sathyanarayanan Kuppuswamy Linux Kernel Developer
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