From: "Roedel, Joerg" <Joerg.Roedel@amd.com>
To: Avi Kivity <avi@redhat.com>
Cc: Sheng Yang <sheng@linux.intel.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Jan Kiszka <jan.kiszka@siemens.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"Yaozu (Eddie) Dong" <eddie.dong@intel.com>
Subject: Re: [PATCH v5] KVM: VMX: Execute WBINVD to keep data consistency with assigned devices
Date: Tue, 29 Jun 2010 15:34:56 +0200 [thread overview]
Message-ID: <20100629133455.GE1788@amd.com> (raw)
In-Reply-To: <4C29E897.7090909@redhat.com>
On Tue, Jun 29, 2010 at 08:35:35AM -0400, Avi Kivity wrote:
> On 06/29/2010 03:28 PM, Roedel, Joerg wrote:
>
> The flag indicates to kvm that it doesn't need to worry about iommu
> cache coherency issues (for example, it can ignore wbinvd), so it needs
> to be set. THe following code
>
> if (iommu_domain_has_cap(kvm->arch.iommu_domain,
> IOMMU_CAP_CACHE_COHERENCY))
> kvm->arch.iommu_flags |= KVM_IOMMU_CACHE_COHERENCY;
>
> does this, so it looks like you need to return true for
> iommu_domain_has_cap() after the change. So far only the intel iommu
> supports it.
Ah ok, good to know. Thanks.
Joerg
next prev parent reply other threads:[~2010-06-29 13:38 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-28 3:36 [PATCH v3] KVM: VMX: Execute WBINVD to keep data consistency with assigned devices Sheng Yang
2010-06-28 3:56 ` Avi Kivity
2010-06-28 6:42 ` Sheng Yang
2010-06-28 6:56 ` Avi Kivity
2010-06-28 6:56 ` Sheng Yang
2010-06-28 7:08 ` Avi Kivity
2010-06-28 7:41 ` Sheng Yang
2010-06-28 8:07 ` Avi Kivity
2010-06-28 8:42 ` [PATCH v4] " Sheng Yang
2010-06-28 9:27 ` Avi Kivity
2010-06-28 9:31 ` Gleb Natapov
2010-06-28 9:35 ` Avi Kivity
2010-06-29 3:16 ` [PATCH v5] " Sheng Yang
2010-06-29 9:39 ` Avi Kivity
2010-06-29 10:32 ` Jan Kiszka
2010-06-29 10:42 ` Avi Kivity
2010-06-29 12:32 ` Roedel, Joerg
2010-06-29 12:37 ` Avi Kivity
2010-06-29 10:14 ` Roedel, Joerg
2010-06-29 10:44 ` Avi Kivity
2010-06-29 12:28 ` Roedel, Joerg
2010-06-29 12:35 ` Avi Kivity
2010-06-29 13:34 ` Roedel, Joerg [this message]
2010-06-29 13:25 ` Marcelo Tosatti
2010-06-29 13:28 ` Avi Kivity
2010-06-29 13:35 ` Marcelo Tosatti
2010-06-29 13:50 ` Avi Kivity
2010-06-29 14:31 ` Marcelo Tosatti
2010-06-28 7:30 ` [PATCH v3] " Dong, Eddie
2010-06-28 8:04 ` Avi Kivity
2010-06-28 8:16 ` Dong, Eddie
2010-06-28 8:45 ` Jan Kiszka
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100629133455.GE1788@amd.com \
--to=joerg.roedel@amd.com \
--cc=avi@redhat.com \
--cc=eddie.dong@intel.com \
--cc=jan.kiszka@siemens.com \
--cc=kvm@vger.kernel.org \
--cc=mtosatti@redhat.com \
--cc=sheng@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.