On Mon, Jan 12, 2015 at 12:41 AM, Christoffer Dall
wrote:
> On Tue, Dec 30, 2014 at 11:19:13AM +0530, Anup Patel wrote:
>> (dropping previous conversation for easy reading)
>>
>> Hi Marc/Christoffer,
>>
>> I tried implementing PMU context-switch via C code
>> in EL1 mode and in atomic context with
On 2015/1/13 18:19, Andreas Herrmann wrote:
Two guest memory regions need to be defined and two "mem=" parameters
need to be passed to guest kernel to support more than 256 MB.
Cc: Chen, Tiejun
Looks fine to me.
Thanks
Tiejun
Signed-off-by: Andreas Herrmann
---
tools/kvm/mips/include/kv
> -Original Message-
> From: Radim Kr?má? [mailto:rkrc...@redhat.com]
> Sent: Wednesday, January 14, 2015 12:17 AM
> To: Wu, Feng
> Cc: Paolo Bonzini; t...@linutronix.de; mi...@redhat.com; h...@zytor.com;
> x...@kernel.org; g...@kernel.org; dw...@infradead.org; j...@8bytes.org;
> alex.wil
On 01/12/2015 09:49 AM, Christoffer Dall wrote:
> On Mon, Jan 12, 2015 at 08:27:03AM -0800, Mario Smarduch wrote:
>> On 01/11/2015 06:00 AM, Christoffer Dall wrote:
>>> On Fri, Jan 09, 2015 at 08:17:20PM -0800, Mario Smarduch wrote:
This patch adds support for 2nd stage page fault handling whi
On Mon, Dec 15, 2014 at 02:58:26PM +, Stefano Stabellini wrote:
> On Tue, 9 Dec 2014, Luis R. Rodriguez wrote:
> > From: "Luis R. Rodriguez"
> >
> > This lets you build a kernel which can support xen dom0
> > or xen guests by just using:
> >
> >make xenconfig
> >
> > on both x86 and arm
Hello Luis,
On 13/01/15 19:03, Luis R. Rodriguez wrote:
>>> diff --git a/kernel/configs/xen.config b/kernel/configs/xen.config
>>> new file mode 100644
>>> index 000..d2ec010
>>> --- /dev/null
>>> +++ b/kernel/configs/xen.config
>>> @@ -0,0 +1,30 @@
>>> +# generic config
>>> +CONFIG_XEN=y
>>>
On Tue, Jan 13, 2015 at 11:13 AM, Julien Grall wrote:
> Stefano had some comments on this patch. See:
>
> http://lists.xenproject.org/archives/html/xen-devel/2014-12/msg01531.html
I see now sorry about that, will address and respin.
Luis
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On Mon, Dec 15, 2014 at 11:58:34AM +, Julien Grall wrote:
> Hello Luis,
>
> On 09/12/14 23:35, Luis R. Rodriguez wrote:
> > From: "Luis R. Rodriguez"
> >
> > This lets you build a kernel which can support xen dom0
> > or xen guests by just using:
> >
> >make xenconfig
> >
> > on both x
On 01/12/2015 11:43 AM, Christoffer Dall wrote:
> On Mon, Jan 12, 2015 at 11:04:45AM -0800, Mario Smarduch wrote:
>
> [...]
>
>> @@ -1059,12 +1104,35 @@ static int user_mem_abort(struct kvm_vcpu *vcpu,
>> phys_addr_t fault_ipa,
>> if (is_error_pfn(pfn))
>>
Trying to emulate the behaviour of set/way cache ops is fairly
pointless, as there are too many ways we can end-up missing stuff.
Also, there is some system caches out there that simply ignore
set/way operations.
So instead of trying to implement them, let's convert it to VA ops,
and use them as a
This small series fixes a number of issues that Christoffer and I have
been trying to nail down for a while, having to do with the host dying
under load (swapping), and also with the way we deal with caches in
general (and with set/way operation in particular):
- The first one changes the way we h
When handling a fault in stage-2, we need to resync I$ and D$, just
to be sure we don't leave any old cache line behind.
That's very good, except that we do so using the *user* address.
Under heavy load (swapping like crazy), we may end up in a situation
where the page gets mapped in stage-2 while
Let's assume a guest has created an uncached mapping, and written
to that page. Let's also assume that the host uses a cache-coherent
IO subsystem. Let's finally assume that the host is under memory
pressure and starts to swap things out.
Before this "uncached" page is evicted, we need to make sur
This patch series enables irqfd on arm and arm64.
Irqfd framework enables to inject a virtual IRQ into a guest upon an
eventfd trigger. User-side uses KVM_IRQFD VM ioctl to provide KVM with
a kvm_irqfd struct that associates a VM, an eventfd, a virtual IRQ number
(aka. the gsi). When an actor sign
Introduce __KVM_HAVE_ARCH_INTC_INITIALIZED define and
associated kvm_arch_intc_initialized function. This latter
allows to test whether the virtual interrupt controller is initialized
and ready to accept virtual IRQ injection. On some architectures,
the virtual interrupt controller is dynamically i
On arm/arm64 the VGIC is dynamically instantiated and it is useful
to expose its state, especially for irqfd setup.
This patch defines __KVM_HAVE_ARCH_INTC_INITIALIZED and
implements kvm_arch_intc_initialized.
The new function can now be used by irqfd to check whether the
virtual interrupt contro
CONFIG_HAVE_KVM_IRQCHIP is needed to support IRQ routing (along
with irq_comm.c and irqchip.c usage). This is not the case for
arm/arm64 currently.
This patch unsets the flag for both arm and arm64.
Signed-off-by: Eric Auger
Acked-by: Christoffer Dall
Acked-by: Will Deacon
---
arch/arm/kvm/Kc
This patch enables irqfd on arm/arm64.
Both irqfd and resamplefd are supported. Injection is implemented
in vgic.c without routing.
This patch enables CONFIG_HAVE_KVM_EVENTFD and CONFIG_HAVE_KVM_IRQFD.
KVM_CAP_IRQFD is now advertised. KVM_CAP_IRQFD_RESAMPLE capability
automatically is advertised
2015-01-13 00:27+, Wu, Feng:
> > On 09/01/2015 15:54, Radim Krčmář wrote:
> > > There are two points relevant to this patch in new KVM's implementation,
> > > ("KVM: x86: amend APIC lowest priority arbitration",
> > > https://lkml.org/lkml/2015/1/9/362)
> > >
> > > 1) lowest priority depends o
On 13/01/15 13:47, Christoffer Dall wrote:
> On Mon, Jan 12, 2015 at 09:13:52PM +0100, Christoffer Dall wrote:
>> On Mon, Jan 12, 2015 at 11:15:34AM +, Marc Zyngier wrote:
>>> On 11/01/15 12:30, Christoffer Dall wrote:
On Fri, Jan 09, 2015 at 02:35:49PM +, Marc Zyngier wrote:
> On
On Tue, Jan 13, 2015 at 01:41:03PM +, Peter Maydell wrote:
> On 13 January 2015 at 13:35, Christoffer Dall
> wrote:
> > Wouldn't a guest (and I believe Linux does this) reserve ASID 0 for
> > additional cores and use ASID 1+++ for itself?
>
> If the guest reserves an ASID for "MMU disabled" t
On Mon, Jan 12, 2015 at 09:13:52PM +0100, Christoffer Dall wrote:
> On Mon, Jan 12, 2015 at 11:15:34AM +, Marc Zyngier wrote:
> > On 11/01/15 12:30, Christoffer Dall wrote:
> > > On Fri, Jan 09, 2015 at 02:35:49PM +, Marc Zyngier wrote:
> > >> On 09/01/15 12:30, Christoffer Dall wrote:
> >
On 13 January 2015 at 13:35, Christoffer Dall
wrote:
> Wouldn't a guest (and I believe Linux does this) reserve ASID 0 for
> additional cores and use ASID 1+++ for itself?
If the guest reserves an ASID for "MMU disabled" then yes, that would
work. The question of course is whether all guests do t
On Tue, Jan 13, 2015 at 12:12:41PM +, Peter Maydell wrote:
> On 13 January 2015 at 12:04, Christoffer Dall
> wrote:
> > Additionally, I haven't been able to think of a reasonable guest
> > scenario where this breaks. Once the guest turns on its MMU it should
> > deal with the necessary icache
On 13 January 2015 at 12:04, Christoffer Dall
wrote:
> Additionally, I haven't been able to think of a reasonable guest
> scenario where this breaks. Once the guest turns on its MMU it should
> deal with the necessary icache invalidation itself (I think), so we're
> really talking about situation
On Tue, Jan 13, 2015 at 11:38:54AM +, Marc Zyngier wrote:
> On 12/01/15 20:10, Christoffer Dall wrote:
> > On Mon, Jan 12, 2015 at 09:58:30AM +, Marc Zyngier wrote:
> >> On 11/01/15 18:38, Christoffer Dall wrote:
> >>> On Sun, Jan 11, 2015 at 06:27:35PM +, Peter Maydell wrote:
> On
On 12/01/15 20:10, Christoffer Dall wrote:
> On Mon, Jan 12, 2015 at 09:58:30AM +, Marc Zyngier wrote:
>> On 11/01/15 18:38, Christoffer Dall wrote:
>>> On Sun, Jan 11, 2015 at 06:27:35PM +, Peter Maydell wrote:
On 11 January 2015 at 17:58, Christoffer Dall
wrote:
> On Sun, J
Two guest memory regions need to be defined and two "mem=" parameters
need to be passed to guest kernel to support more than 256 MB.
Cc: Chen, Tiejun
Signed-off-by: Andreas Herrmann
---
tools/kvm/mips/include/kvm/kvm-arch.h | 10 +
tools/kvm/mips/kvm.c | 36
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