[lkml]   [2013]   [Dec]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 2/2] PCI: Only enable realloc auto when root bus has 64bit mmio
On Mon, Dec 9, 2013 at 9:54 AM, Bjorn Helgaas <> wrote:
> I don't see how the question of whether the host bridge has an
> aperture above 4G is related to whether we should automatically
> reassign resources. They seem orthogonal to me. No doubt it "fixes"
> the current problem, but it doesn't make sense conceptually.

the BIOS has problem to have two functions point to same position.

During realloc first try: standard+two rom_bar+sriov will be fail at first as
pci root bus does not have enough mmio range,
later try will standard+two rom_bar it will fail too as root bus mmio range will
still only fit standard+one rom_bar.

My thoughts is limit use realloc auto in those systems that does not have mmio64
above 4g...
so old system will never have to specify "pci=realloc=off" to disable it.



 \ /
  Last update: 2013-12-09 21:01    [W:0.067 / U:0.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site