From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/7] Support for GB pages in KVM
Date: Sun, 29 Mar 2009 15:01:46 +0300 [thread overview]
Message-ID: <49CF632A.7070906@redhat.com> (raw)
In-Reply-To: <20090328214008.GB4694@amt.cnet>
Marcelo Tosatti wrote:
> On Fri, Mar 27, 2009 at 03:31:52PM +0100, Joerg Roedel wrote:
>
>> Hi,
>>
>> this patchset extends the KVM MMU implementation to support 1GB pages as
>> supported by AMD family 16 processors. These patches enable support for
>> 1 GB pages with Nested Paging. Support for these pages in the shadow
>> paging code was also developed but does not run stable yet. The patch
>> for shadow-paging support is not included in this series and will be
>> sent out seperatly.
>>
>
> Looks generally sane. I'm not sure its even worthwhile to support
> GBpages with softmmu, because the chance of finding an area without
> shadowed (write protected) pages is much smaller than with 2MB pages.
>
If the guest uses 1GB pages in userspace, then these pages would not
have any write protected subpages.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2009-03-29 12:02 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-27 14:31 [PATCH 0/7] Support for GB pages in KVM Joerg Roedel
2009-03-27 14:31 ` [PATCH 1/7] hugetlb: export vma_kernel_pagesize to modules Joerg Roedel
2009-03-27 14:31 ` [PATCH 2/7] kvm mmu: infrastructure changes for multiple huge page support Joerg Roedel
2009-03-29 11:38 ` Avi Kivity
2009-03-27 14:31 ` [PATCH 3/7] kvm mmu: add page size parameter to rmap_remove Joerg Roedel
2009-03-27 14:31 ` [PATCH 4/7] kvm mmu: implement necessary data structures for second huge page accounting Joerg Roedel
2009-03-29 11:45 ` Avi Kivity
2009-03-29 13:03 ` Joerg Roedel
2009-03-29 13:15 ` Avi Kivity
2009-03-29 13:32 ` Joerg Roedel
2009-03-29 13:26 ` Avi Kivity
2009-03-29 13:37 ` Avi Kivity
2009-03-27 14:31 ` [PATCH 5/7] kvm mmu: add support for 1GB pages to direct mapping paths Joerg Roedel
2009-03-29 11:49 ` Avi Kivity
2009-03-27 14:31 ` [PATCH 6/7] kvm mmu: enabling 1GB pages by extending backing_size funtion Joerg Roedel
2009-03-29 11:51 ` Avi Kivity
2009-03-27 14:31 ` [PATCH 7/7] kvm x86: report 1GB page support to userspace Joerg Roedel
2009-03-29 11:54 ` Avi Kivity
2009-03-29 12:45 ` Joerg Roedel
2009-03-29 12:49 ` Avi Kivity
2009-03-29 12:54 ` Joerg Roedel
2009-03-29 13:00 ` Avi Kivity
2009-03-28 21:40 ` [PATCH 0/7] Support for GB pages in KVM Marcelo Tosatti
2009-03-28 21:49 ` Joerg Roedel
2009-03-29 12:03 ` Avi Kivity
2009-03-29 12:47 ` Joerg Roedel
2009-03-29 12:01 ` Avi Kivity [this message]
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