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Re: [Qemu-devel] [PATCH v3] s390: autodetect map private
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH v3] s390: autodetect map private |
Date: |
Mon, 18 Jun 2012 15:44:51 +0200 |
On 15.06.2012, at 17:10, Christian Borntraeger wrote:
> By default qemu will use MAP_PRIVATE for guest pages. This will write
> protect pages and thus break on s390 systems that dont support this feature.
> Therefore qemu has a hack to always use MAP_SHARED for s390. But MAP_SHARED
> has other problems (no dirty pages tracking, a lot more swap overhead etc.)
> Newer systems allow the distinction via KVM_CAP_S390_COW. With this feature
> qemu can use the standard qemu alloc if available, otherwise it will use
> the old s390 hack.
Thanks, applied to s390-next.
Alex
- Re: [Qemu-devel] [PATCH 2/8] s390: autodetect map private, (continued)
- Re: [Qemu-devel] [PATCH 2/8] s390: autodetect map private, Jan Kiszka, 2012/06/13
- Re: [Qemu-devel] [PATCH 2/8] s390: autodetect map private, Christian Borntraeger, 2012/06/13
- Re: [Qemu-devel] [PATCH 2/8] s390: autodetect map private, Jan Kiszka, 2012/06/13
- Re: [Qemu-devel] [PATCH 2/8] s390: autodetect map private, Alexander Graf, 2012/06/13
- Re: [Qemu-devel] [PATCH 2/8] s390: autodetect map private, Jan Kiszka, 2012/06/13
- [Qemu-devel] Next version of memory allocation fixup, Christian Borntraeger, 2012/06/15
- [Qemu-devel] [PatchV2] s390: autodetect map private, Christian Borntraeger, 2012/06/15
- [Qemu-devel] One more fix, Christian Borntraeger, 2012/06/15
- [Qemu-devel] [PATCH v3] s390: autodetect map private, Christian Borntraeger, 2012/06/15
- Re: [Qemu-devel] [PATCH v3] s390: autodetect map private, Jan Kiszka, 2012/06/15
- Re: [Qemu-devel] [PATCH v3] s390: autodetect map private,
Alexander Graf <=
[Qemu-devel] [PATCH 4/8] s390: stop target cpu on sigp initial reset, Jens Freimann, 2012/06/06
[Qemu-devel] [PATCH 1/8] s390: add new define for KVM_CAP_S390_COW, Jens Freimann, 2012/06/06
[Qemu-devel] [PATCH 8/8] s390: Fix the storage increment size calculation, Jens Freimann, 2012/06/06
Re: [Qemu-devel] [PATCH 0/8] s390: SCLP console and misc, Christian Borntraeger, 2012/06/18