Re: PCIe Hotplug: NFG unless I boot with card already inserted. | KernelTrap

Re: PCIe Hotplug: NFG unless I boot with card already inserted.

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From: Theodore Tso <tytso@...>

To: Kristen Carlson Accardi <kristen.c.accardi@...>

Cc: Mark Lord <lkml@...>, <pcihpd-discuss@...>, Linux Kernel <linux-kernel@...>

Subject: Re: PCIe Hotplug: NFG unless I boot with card already inserted.

Date: Tuesday, October 16, 2007 - 6:33 pm

On Tue, Oct 16, 2007 at 02:01:16PM -0700, Kristen Carlson Accardi wrote:
quoted text> > 
> > I believe the code is leaning too heavily on the BIOS for stuff,
> > and like lots of other parts of the kernel we'll need an alternate
> > strategy for when things aren't "perfect".
> 
> the pitfall for forcing pciehp when the BIOS hasn't provided OSC is that
> you don't know for sure that you really have gained control of hot plug
> operation properly.  You can obviously try it, using the provide forcing
> option as you have done, but the behavior is not predictable.

The bigger concern is whether this likely to break things on systems
that *do* correctly implement ACPI support for PCIe hotplug?

     	  	    	      	   	       - Ted


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Messages in current thread:

PCIe Hotplug: NFG unless I boot with card already inserted., Mark Lord, (Tue Oct 16, 9:46 am)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Mark Lord, (Tue Oct 16, 11:21 am)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Kristen Carlson Accardi, (Tue Oct 16, 11:46 am)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Mark Lord, (Tue Oct 16, 2:39 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Kristen Carlson Accardi, (Tue Oct 16, 4:29 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Mark Lord, (Tue Oct 16, 4:41 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Kristen Carlson Accardi, (Tue Oct 16, 2:43 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Mark Lord, (Tue Oct 16, 2:57 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Mark Lord, (Tue Oct 16, 2:59 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Mark Lord, (Tue Oct 16, 3:31 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Kristen Carlson Accardi, (Tue Oct 16, 4:07 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Mark Lord, (Tue Oct 16, 4:39 pm)

Re: [Pcihpd-discuss] PCIe Hotplug: NFG unless I boot with ca..., Greg KH, (Tue Oct 16, 5:41 pm)

[PATCH] Fix PCIe hotplug for Dell notebook ExpressCard slots, Mark Lord, (Tue Oct 16, 5:57 pm)

[PATCH 0/4] Fix PCIe hotplug for non-ACPI ExpressCard slots ..., Mark Lord, (Tue Oct 16, 9:53 pm)

Re: [PATCH 0/4] Fix PCIe hotplug for non-ACPI ExpressCard sl..., Andrew Morton, (Wed Oct 17, 6:02 pm)

Re: [PATCH 0/4] Fix PCIe hotplug for non-ACPI ExpressCard sl..., Mark Lord, (Wed Oct 17, 6:59 pm)

Re: [PATCH 0/4] Fix PCIe hotplug for non-ACPI ExpressCard sl..., Andrew Morton, (Wed Oct 17, 7:25 pm)

[PATCH 1/4] Fix PCIe hotplug for non-ACPI ExpressCard slots ..., Mark Lord, (Tue Oct 16, 9:54 pm)

Re: [Pcihpd-discuss] [PATCH 1/4] Fix PCIe hotplug for non-AC..., Matthew Wilcox, (Tue Oct 16, 11:29 pm)

Re: [Pcihpd-discuss] [PATCH 1/4] Fix PCIe hotplug for non-AC..., Mark Lord, (Wed Oct 17, 9:09 am)

Re: [Pcihpd-discuss] [PATCH 1/4] Fix PCIe hotplug for non-AC..., Matthew Wilcox, (Wed Oct 17, 10:02 am)

Re: [Pcihpd-discuss] [PATCH 1/4] Fix PCIe hotplug for non-AC..., Mark Lord, (Wed Oct 17, 10:33 am)

[PATCH 2/4] Fix PCIe hotplug for non-ACPI ExpressCard slots ..., Mark Lord, (Tue Oct 16, 9:54 pm)

Re: [Pcihpd-discuss] [PATCH 2/4] Fix PCIe hotplug for non-AC..., Kristen Carlson Accardi, (Wed Oct 17, 7:54 pm)

Re: [Pcihpd-discuss] [PATCH 2/4] Fix PCIe hotplug for non-AC..., Mark Lord, (Wed Oct 17, 10:25 pm)

Re: [Pcihpd-discuss] [PATCH 2/4] Fix PCIe hotplug for non-AC..., Matthew Wilcox, (Tue Oct 16, 11:31 pm)

[PATCH 3/4] Fix PCIe hotplug for non-ACPI ExpressCard slots ..., Mark Lord, (Tue Oct 16, 9:55 pm)

[PATCH 4/4] Fix PCIe hotplug for non-ACPI ExpressCard slots ..., Mark Lord, (Tue Oct 16, 9:55 pm)

Re: [PATCH 4/4] Fix PCIe hotplug for non-ACPI ExpressCard sl..., Kristen Carlson Accardi, (Wed Oct 17, 8:01 pm)

Re: [PATCH 4/4] Fix PCIe hotplug for non-ACPI ExpressCard sl..., Mark Lord, (Wed Oct 17, 10:28 pm)

Re: [PATCH] Fix PCIe hotplug for Dell notebook ExpressCard s..., Greg KH, (Tue Oct 16, 6:03 pm)

Re: [Pcihpd-discuss] [PATCH] Fix PCIe hotplug for Dell noteb..., Kristen Carlson Accardi, (Tue Oct 16, 6:41 pm)

Re: [PATCH] Fix PCIe hotplug for Dell notebook ExpressCard s..., Mark Lord, (Tue Oct 16, 6:19 pm)

Re: [PATCH] Fix PCIe hotplug for Dell notebook ExpressCard s..., Kristen Carlson Accardi, (Tue Oct 16, 6:04 pm)

Re: [PATCH] Fix PCIe hotplug for Dell notebook ExpressCard s..., Mark Lord, (Tue Oct 16, 6:17 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Kristen Carlson Accardi, (Tue Oct 16, 5:01 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Theodore Tso, (Tue Oct 16, 6:33 pm)

Re: PCIe Hotplug: NFG unless I boot with card already inser..., Kristen Carlson Accardi, (Tue Oct 16, 3:51 pm)

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