From: Paolo Bonzini <pbonzini@redhat.com>
To: Christoffer Dall <christoffer.dall@linaro.org>
Cc: peter.maydell@linaro.org, Andrew Jones <drjones@redhat.com>,
ard.biesheuvel@linaro.org, marc.zyngier@arm.com,
catalin.marinas@arm.com, qemu-devel@nongnu.org, agraf@suse.de,
j.fanguede@virtualopensystems.com,
Laszlo Ersek <lersek@redhat.com>,
kvmarm@lists.cs.columbia.edu, m.smarduch@samsung.com
Subject: Re: [Qemu-devel] [RFC/RFT PATCH v2 0/3] KVM: Introduce KVM_MEM_UNCACHED
Date: Thu, 14 May 2015 13:38:38 +0200 [thread overview]
Message-ID: <5554893E.4030105@redhat.com> (raw)
In-Reply-To: <20150514113634.GS32765@cbox>
On 14/05/2015 13:36, Christoffer Dall wrote:
> > > > (It's probably worth looking at the documentation in the first hunk too,
> > > > under the commit message.)
> > >
> > > Why is this a hack/unintuitive? Is the semantics of the QEMU PCI bus
> > > not simply that MMIO regions are coherent?
> >
> > Only until device assignment gets into the picture.
>
> Will UEFI have to deal with device assignment in any respect?
Why not? For example you could do network boot from an assigned network
card.
In fact, anything that UEFI has to deal with, the OS has to deal with
too. If you need a UEFI hack, chances are you need or will need a Linux
hack too.
Paolo
next prev parent reply other threads:[~2015-05-14 11:38 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-13 11:31 [Qemu-devel] [RFC/RFT PATCH v2 0/3] KVM: Introduce KVM_MEM_UNCACHED Andrew Jones
2015-05-13 11:31 ` [Qemu-devel] [RFC/RFT PATCH v2 1/3] arm/arm64: pageattr: add set_memory_nc Andrew Jones
2015-05-14 11:05 ` Christoffer Dall
2015-05-14 13:46 ` Andrew Jones
2015-05-15 14:51 ` Christoffer Dall
2015-05-18 15:53 ` Catalin Marinas
2015-05-19 10:03 ` Andrew Jones
2015-05-19 11:18 ` Catalin Marinas
2015-05-19 11:38 ` Andrew Jones
2015-05-20 10:01 ` Christoffer Dall
2015-05-20 11:24 ` Catalin Marinas
2015-05-23 1:08 ` Mario Smarduch
2015-05-25 17:11 ` Andrew Jones
2015-05-27 1:08 ` Mario Smarduch
2015-05-13 11:31 ` [Qemu-devel] [RFC/RFT PATCH v2 2/3] KVM: promote KVM_MEMSLOT_INCOHERENT to uapi Andrew Jones
2015-05-14 10:12 ` Paolo Bonzini
2015-05-14 10:34 ` Christoffer Dall
2015-05-13 11:31 ` [Qemu-devel] [RFC/RFT PATCH v2 3/3] arm/arm64: KVM: implement 'uncached' mem coherency Andrew Jones
2015-05-14 10:55 ` Christoffer Dall
2015-05-14 13:32 ` Andrew Jones
2015-05-15 15:02 ` Christoffer Dall
2015-05-15 17:04 ` Andrew Jones
2015-05-15 20:16 ` Jérémy Fanguède
2015-05-21 2:29 ` Mario Smarduch
2015-05-21 16:50 ` Andrew Jones
2015-05-14 10:30 ` [Qemu-devel] [RFC/RFT PATCH v2 0/3] KVM: Introduce KVM_MEM_UNCACHED Christoffer Dall
2015-05-14 11:09 ` Laszlo Ersek
2015-05-14 11:29 ` Christoffer Dall
2015-05-14 11:31 ` Paolo Bonzini
2015-05-14 11:36 ` Christoffer Dall
2015-05-14 11:38 ` Paolo Bonzini [this message]
2015-05-14 12:00 ` Christoffer Dall
2015-05-14 12:08 ` Paolo Bonzini
2015-05-14 12:24 ` Christoffer Dall
2015-05-14 12:28 ` Paolo Bonzini
2015-05-14 12:34 ` Christoffer Dall
2015-05-14 13:01 ` Laszlo Ersek
2015-05-14 12:38 ` Peter Maydell
2015-05-14 13:00 ` Andrew Jones
2015-05-14 13:32 ` Laszlo Ersek
2015-05-14 13:48 ` Michael S. Tsirkin
2015-05-14 14:19 ` Laszlo Ersek
2015-05-14 14:41 ` Michael S. Tsirkin
2015-05-15 9:00 ` Ard Biesheuvel
2015-05-14 10:31 ` Andrew Jones
2015-05-14 10:37 ` Peter Maydell
2015-05-14 13:03 ` Andrew Jones
2015-05-14 13:11 ` Peter Maydell
2015-05-14 13:33 ` Laszlo Ersek
2015-05-14 13:36 ` Andrew Jones
2015-05-15 15:09 ` Christoffer Dall
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