lkml.org 
[lkml]   [2019]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] KVM: arm/arm64: vgic: Use a single IO device per redistributor
On Fri, 23 Aug 2019 18:33:30 +0100,
Eric Auger <eric.auger@redhat.com> wrote:
>
> At the moment we use 2 IO devices per GICv3 redistributor: one
> one for the RD_base frame and one for the SGI_base frame.
>
> Instead we can use a single IO device per redistributor (the 2
> frames are contiguous). This saves slots on the KVM_MMIO_BUS
> which is currently limited to NR_IOBUS_DEVS (1000).
>
> This change allows to instantiate up to 512 redistributors and may
> speed the guest boot with a large number of VCPUs.
>
> Signed-off-by: Eric Auger <eric.auger@redhat.com>

Yup, that's exactly what I was hoping for. A very nice cleanup, and no
need to increase NR_IOBUS_DEVS for the foreseeable future.

I've applied this to -next.

Thanks,

M.

--
Jazz is not dead, it just smells funny.

\
 
 \ /
  Last update: 2019-08-25 12:05    [W:0.053 / U:0.596 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site