| Message ID | 1404907608.16789.18.camel@kazak.uk.xensource.com |
|---|---|
| State | New |
| Headers | show |
On Wed, 2014-07-09 at 13:06 +0100, Ian Campbell wrote: > The following series adds support for superpage mappings (1G and 2M) in > the p2m for dom0 and domU. > > On a 32-bit platform this causes the overhead of kernbench vs. native to > drop from 8-9% to 1.5-3% (it's basically the same for both dom0 and > domU). > > I couldn't get my 64-bit platform to boot natively for some reason but > in absolute terms kernbench improved by ~5% (domU) to ~15% (dom0). > > A xen: arm: dump vcpu gic info in arch_dump_vcpu_info > At tools/libxc: pull min/max_t into xc_private.h Ian did actually ack this one in a previous iteration > At tools: arm: allocate large pages to guests. And has now acked this one. > A xen: arm: only put_page for p2m operations which require it. > A xen: arm: handle superpage mappings in p2m_lookup > A m xen: arm: add some helpers for assessing p2m pte So I've applied up to here. > m xen: arm: use superpages in p2m when pages are suitably aligned Julien had a comment here so I've not applied this one yet. > xen: arm: allocate more than one bank for 1:1 domain 0 if needed > > A == ARM ack > t == Tools ACK still needed > m == modifications this round > > Ian. > > The following changes since commit f9cff088f470b662df1ac31d1161b4f1870b8546: > > oxenstored: perform a 3-way merge of the quota after a transaction (2014-07-04 09:49:09 +0100) > > are available in the git repository at: > > git://xenbits.xen.org/people/ianc/xen.git arm-p2m-superpages-v5 > > for you to fetch changes up to 4f8e06b5a901e58cb095878ced7989ac65dd7f3d: > > xen: arm: allocate more than one bank for 1:1 domain 0 if needed (2014-07-09 13:02:47 +0100) > > ---------------------------------------------------------------- > Ian Campbell (8): > xen: arm: dump vcpu gic info in arch_dump_vcpu_info > tools/libxc: pull min/max_t into xc_private.h > tools: arm: allocate large pages to guests. > xen: arm: only put_page for p2m operations which require it. > xen: arm: handle superpage mappings in p2m_lookup > xen: arm: add some helpers for assessing p2m pte > xen: arm: use superpages in p2m when pages are suitably aligned > xen: arm: allocate more than one bank for 1:1 domain 0 if needed > > tools/libxc/xc_dom_arm.c | 131 ++++++- > tools/libxc/xc_dom_decompress_unsafe_xz.c | 5 - > tools/libxc/xc_private.h | 5 + > xen/arch/arm/domain.c | 8 +- > xen/arch/arm/domain_build.c | 288 +++++++++++++-- > xen/arch/arm/p2m.c | 554 ++++++++++++++++++++++------- > xen/include/asm-arm/p2m.h | 12 + > 7 files changed, 822 insertions(+), 181 deletions(-) > > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel
The following series adds support for superpage mappings (1G and 2M) in the p2m for dom0 and domU. On a 32-bit platform this causes the overhead of kernbench vs. native to drop from 8-9% to 1.5-3% (it's basically the same for both dom0 and domU). I couldn't get my 64-bit platform to boot natively for some reason but in absolute terms kernbench improved by ~5% (domU) to ~15% (dom0). A xen: arm: dump vcpu gic info in arch_dump_vcpu_info At tools/libxc: pull min/max_t into xc_private.h At tools: arm: allocate large pages to guests. A xen: arm: only put_page for p2m operations which require it. A xen: arm: handle superpage mappings in p2m_lookup A m xen: arm: add some helpers for assessing p2m pte m xen: arm: use superpages in p2m when pages are suitably aligned xen: arm: allocate more than one bank for 1:1 domain 0 if needed A == ARM ack t == Tools ACK still needed m == modifications this round Ian. The following changes since commit f9cff088f470b662df1ac31d1161b4f1870b8546: oxenstored: perform a 3-way merge of the quota after a transaction (2014-07-04 09:49:09 +0100) are available in the git repository at: git://xenbits.xen.org/people/ianc/xen.git arm-p2m-superpages-v5 for you to fetch changes up to 4f8e06b5a901e58cb095878ced7989ac65dd7f3d: xen: arm: allocate more than one bank for 1:1 domain 0 if needed (2014-07-09 13:02:47 +0100) ---------------------------------------------------------------- Ian Campbell (8): xen: arm: dump vcpu gic info in arch_dump_vcpu_info tools/libxc: pull min/max_t into xc_private.h tools: arm: allocate large pages to guests. xen: arm: only put_page for p2m operations which require it. xen: arm: handle superpage mappings in p2m_lookup xen: arm: add some helpers for assessing p2m pte xen: arm: use superpages in p2m when pages are suitably aligned xen: arm: allocate more than one bank for 1:1 domain 0 if needed tools/libxc/xc_dom_arm.c | 131 ++++++- tools/libxc/xc_dom_decompress_unsafe_xz.c | 5 - tools/libxc/xc_private.h | 5 + xen/arch/arm/domain.c | 8 +- xen/arch/arm/domain_build.c | 288 +++++++++++++-- xen/arch/arm/p2m.c | 554 ++++++++++++++++++++++------- xen/include/asm-arm/p2m.h | 12 + 7 files changed, 822 insertions(+), 181 deletions(-)