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Re: [Qemu-devel] vhost-user: broken mem regions
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] vhost-user: broken mem regions |
Date: |
Wed, 25 Jun 2014 12:44:58 -0400 (EDT) |
> nregions: 4
> region:
> gpa = 0x100000000
> size = 3221225472
> ua = 0x2aab6ac00000
High memory, above 3 gigabytes.
> region:
> gpa = 0xFFFC0000
> size = 262144
> ua = 0x7fc13d200000
This is the BIOS. There shouldn't be any FD for this one, it
is not allocated in hugetlbfs.
> region:
> gpa = 0x0
> size = 655360
> ua = 0x2aaaaac00000
> region:
> gpa = 0xC0000
> size = 3220439040
> ua = 0x2aaaaacc0000
Together, it's the first 3 GB of memory.
I understand now what you mean. Yeah, the format should be changed
to include the offset (why does vhost-user need the ua at all?
perhaps the offset can replace the ua).
> BTW Any idea what to do with region 2, it doesn’t look like the one belonging
> to the same place, but qemu_get_ram_fd() returns same FD for it.
This must be a bug. I would have expected qemu_get_ram_fd to return -1
here, so no descriptor should be passed to vhost-user.
Paolo
- Re: [Qemu-devel] vhost-user: broken mem regions, Damjan Marion (damarion), 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Nikolay Nikolaev, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Damjan Marion (damarion), 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Damjan Marion (damarion), 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Damjan Marion (damarion), 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Damjan Marion (damarion), 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions,
Paolo Bonzini <=
- Re: [Qemu-devel] vhost-user: broken mem regions, Nikolay Nikolaev, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Paolo Bonzini, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Nikolay Nikolaev, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Damjan Marion (damarion), 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Nikolay Nikolaev, 2014/06/26
- Re: [Qemu-devel] vhost-user: broken mem regions, Nikolay Nikolaev, 2014/06/25
- Re: [Qemu-devel] vhost-user: broken mem regions, Paolo Bonzini, 2014/06/25