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Message-ID: <4CC9BA4E.2090903@goop.org>
Date: Thu, 28 Oct 2010 11:00:46 -0700
From: Jeremy Fitzhardinge <jeremy@...p.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
CC: Stefano Stabellini <stefano.stabellini@...citrix.com>,
"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] xen PV on HVM and initial domain
Hi Linus,
Did you see this pull request? I approve of it, if that's what you're
looking for.
Thanks,
J
On 10/27/2010 11:08 AM, Stefano Stabellini wrote:
> Linus,
> I added another commit at the end of the branch to fix MSI setup issues
> when Linux is running as initial domain on Xen.
> The shortlog and the diffstat are slightly different now:
>
> Jeremy Fitzhardinge (5):
> acpi: use indirect call to register gsi in different modes
> xen: add xen hvm acpi_register_gsi variant
> xen: remap GSIs as pirqs when running as initial domain
> xen: map a dummy page for local apic and ioapic in xen_set_fixmap
> xen: make hvc_xen console work for dom0.
>
> Juan Quintela (2):
> xen: Initialize xenbus for dom0.
> xen: add the direct mapping area for ISA bus access
>
> Qing He (1):
> xen: remap MSIs into pirqs when running as initial domain
>
> Stefano Stabellini (10):
> xen: support pirq != irq
> xen: get the maximum number of pirqs from xen
> xen: implement xen_hvm_register_pirq
> xen: support GSI -> pirq remapping in PV on HVM guests
> xen: map MSIs into pirqs
> xen: introduce XEN_DOM0 as a silent option
> xen: use vcpu_ops to setup cpu masks
> xen: mask the MTRR feature from the cpuid
> xen: add a missing #include to arch/x86/pci/xen.c
> xen: initialize cpu masks for pv guests in xen_smp_init
>
> Weidong Han (1):
> xen: register xen pci notifier
>
> arch/x86/include/asm/acpi.h | 3 +
> arch/x86/include/asm/xen/pci.h | 12 ++
> arch/x86/kernel/acpi/boot.c | 60 +++++--
> arch/x86/pci/xen.c | 308 ++++++++++++++++++++++++++++++++++--
> arch/x86/xen/Kconfig | 10 ++
> arch/x86/xen/enlighten.c | 2 +
> arch/x86/xen/mmu.c | 47 ++++++-
> arch/x86/xen/setup.c | 3 +
> arch/x86/xen/smp.c | 26 +++
> drivers/char/hvc_xen.c | 98 ++++++++----
> drivers/xen/Makefile | 1 +
> drivers/xen/events.c | 195 +++++++++++++++++++++---
> drivers/xen/pci.c | 117 ++++++++++++++
> drivers/xen/xenbus/xenbus_probe.c | 29 ++++-
> include/xen/events.h | 8 +
> include/xen/interface/features.h | 3 +
> include/xen/interface/physdev.h | 67 ++++++++
> 17 files changed, 897 insertions(+), 92 deletions(-)
>
>
> The branch is still:
>
> git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git for-linus
>
> otherwise if you prefer the old branch, without this commit, pull this:
>
> git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git 2.6.36-rc8-initial-domain-v7
>
>
> Many thanks in advance,
>
> Stefano
>
> On Tue, 26 Oct 2010, Stefano Stabellini wrote:
>> Linus,
>> I have two patch series that I would like you to pull:
>>
>> PV on HVM: receive interrupts as xen events [1]
>> xen: initial domain support [2]
>>
>> Please pull from the following branch:
>>
>> git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git for-linus
>>
>> it contains both series rebased on Konrad's xen-pcifront series [3]
>> (they depend on it, unfortunately I cannot produce a working series
>> without it) on Linux 2.6.36 rc8; my two patch series start after git
>> commit 67ba37293e938208795d6a3562201bdb0cf43393.
>>
>> The first patch series introduces some performance improvements for Xen
>> PV on HVM guests: interacting with the emulated APIC is slow because it
>> causes traps in the hypervisor while receiving Xen events using the
>> vector callback mechanism allow us to skip all that. For this reason we
>> remap interrupts and MSIs into Xen pirqs so that from that point on we
>> can receive them as Xen events instead.
>>
>> The second patch series implements the basic support needed to boot
>> Linux as initial domain on Xen: the target is not to add full featured
>> dom0 support in the kernel but to be able to boot Linux on Xen on
>> native.
>>
>> I have just added a last minute fix at end to solve a vcpu
>> initialization problem for pv guests (they would see only a single vcpu
>> even though they are given more than one [4]).
>>
>>
>> All together the two series introduce the following changes:
>>
>> Jeremy Fitzhardinge (5):
>> acpi: use indirect call to register gsi in different modes
>> xen: add xen hvm acpi_register_gsi variant
>> xen: remap GSIs as pirqs when running as initial domain
>> xen: map a dummy page for local apic and ioapic in xen_set_fixmap
>> xen: make hvc_xen console work for dom0.
>>
>> Juan Quintela (2):
>> xen: Initialize xenbus for dom0.
>> xen: add the direct mapping area for ISA bus access
>>
>> Qing He (1):
>> xen: remap MSIs into pirqs when running as initial domain
>>
>> Stefano Stabellini (10):
>> xen: support pirq != irq
>> xen: get the maximum number of pirqs from xen
>> xen: implement xen_hvm_register_pirq
>> xen: support GSI -> pirq remapping in PV on HVM guests
>> xen: map MSIs into pirqs
>> xen: introduce XEN_DOM0 as a silent option
>> xen: use vcpu_ops to setup cpu masks
>> xen: mask the MTRR feature from the cpuid
>> xen: add a missing #include to arch/x86/pci/xen.c
>> xen: initialize cpu masks for pv guests in xen_smp_init
>>
>> arch/x86/include/asm/acpi.h | 3 +
>> arch/x86/include/asm/xen/pci.h | 12 ++
>> arch/x86/kernel/acpi/boot.c | 60 +++++--
>> arch/x86/pci/xen.c | 308 ++++++++++++++++++++++++++++++++++--
>> arch/x86/xen/Kconfig | 10 ++
>> arch/x86/xen/enlighten.c | 2 +
>> arch/x86/xen/mmu.c | 47 ++++++-
>> arch/x86/xen/setup.c | 3 +
>> arch/x86/xen/smp.c | 26 +++
>> drivers/char/hvc_xen.c | 98 ++++++++----
>> drivers/xen/events.c | 195 +++++++++++++++++++++---
>> drivers/xen/xenbus/xenbus_probe.c | 29 ++++-
>> include/xen/events.h | 8 +
>> include/xen/interface/features.h | 3 +
>> include/xen/interface/physdev.h | 46 ++++++
>> 15 files changed, 758 insertions(+), 92 deletions(-)
>>
>> Cheers,
>>
>> Stefano
>>
>> ---
>> [1] http://lkml.org/lkml/2010/10/12/246
>> [2] http://lkml.org/lkml/2010/10/19/199
>> [3] http://lkml.org/lkml/2010/10/26/231
>> [4] http://lkml.org/lkml/2010/10/26/369
>> --
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