Messages in this thread | | | Date | Fri, 31 May 2013 12:06:06 +0200 | From | Ingo Molnar <> | Subject | Re: [regression, bisected] x86: efi: Pass boot services variable info to runtime code |
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* Russ Anderson <rja@sgi.com> wrote:
> On Thu, May 30, 2013 at 10:32:09PM +0000, Matthew Garrett wrote: > > On Thu, 2013-05-30 at 17:28 -0500, Russ Anderson wrote: > > > On Thu, May 30, 2013 at 10:21:53PM +0000, Matthew Garrett wrote: > > > > On Thu, 2013-05-30 at 17:17 -0500, Russ Anderson wrote: > > > > > > > > > That's a great idea. This patch moves the QueryVariableInfo() > > > > > call from bootime to runtime, in efi_late_init(). The attached > > > > > patch is consistent with the UEFI spec and avoids the problem. > > > > > > > > No, that defeats the entire point of the original patch. > > > > > > How so? It is still calling QueryVariableInfo() > > > before the data is used. > > > > We want to know how much space is used by variables that aren't visible > > at runtime. > > We want to boot. We could boot up through 3.9-rc7. > > Knowing how much space is used by variables that aren't > visible at runtime it moot if you can't boot.
Exactly - fixing a boot regression is _WAY_ more important than pretty much any other concern.
and the boot breakage is not limited to UV systems - the thread mentioned a couple of other systems as well.
So it's an absolute no-brainer that this change should be reverted or fixed via your patch.
Once a safer mechanism is implemented to call QueryVariableInfo() earlier (Boris's patches?) the change can be reintroduced.
Thanks,
Ingo
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