On Sun, Oct 29, 2023 at 06:31:36PM +0100, Thomas Gleixner wrote:
> On Fri, Oct 20 2023 at 18:12, Kirill A. Shutemov wrote:
>
> > MADT Multiprocessor Wakeup structure version 1 brings support of CPU
> > offlining: BIOS provides a reset vector where the CPU has to jump to
> > offline itself. The
On Fri, Oct 20 2023 at 18:12, Kirill A. Shutemov wrote:
> MADT Multiprocessor Wakeup structure version 1 brings support of CPU
> offlining: BIOS provides a reset vector where the CPU has to jump to
> offline itself. The new TEST mailbox command can be used to test the CPU
> offlined successfully
On Tue, Oct 24, 2023 at 10:11:58AM +, Huang, Kai wrote:
>
> > --- /dev/null
> > +++ b/arch/x86/kernel/acpi/madt.S
>
> I think the name 'madt.S' is too generic. How about something be more
> specific
> such as madt_reset.S, or madt_playdead.S, etc?
Okay, madt_playdead.S sounds good.
> >
> > + .text
> > + .align PAGE_SIZE
> > +SYM_FUNC_START(asm_acpi_mp_play_dead)
> > + /* Load address of reset vector into RCX to jump when kernel is ready */
> > + movqacpi_mp_reset_vector_paddr(%rip), %rcx
> > +
> > + /* Turn off global entries. Following CR3 write will flush them.
> --- /dev/null
> +++ b/arch/x86/kernel/acpi/madt.S
I think the name 'madt.S' is too generic. How about something be more specific
such as madt_reset.S, or madt_playdead.S, etc?
> @@ -0,0 +1,24 @@
> +#include
> +#include
> +#include
> +#include
> +
> + .text
> + .align PAGE_SIZE
>
MADT Multiprocessor Wakeup structure version 1 brings support of CPU
offlining: BIOS provides a reset vector where the CPU has to jump to
offline itself. The new TEST mailbox command can be used to test the CPU
offlined successfully and BIOS has control over it.
Add CPU offling support for ACPI
