Re: [PATCH v2 24/37] PCI, ACPI: Add pci_root_hp hot removal notification support.

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On Thu, Mar 15, 2012 at 10:53 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> Sure, the 'echo "\_SB.PCIB 3" > /proc/acpi/sci/notify' way looks more
> like physical hotadd/remove because it is basically injecting the
> notify event that the hardware/BIOS should be generating itself.  But
> it is platform-specific and therefore unacceptable as a general user
> interface.
>
> Using /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/remove would be a
> more generic way.  The PNP0A08:00/remove implementation would
> basically turn into an acpi_pci_root_remove() call, just like the
> 'echo "\_SB.PCIB 3" > /proc/acpi/sci/notify' does.

if the users can not find _SB.PCIB etc, they may not find
LNXSYSTM:00/device:00/PNP0A08:00.

so /sys/class/pci_bus/0000:80/remove is more easy for them?

Yinghai
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