ndles more CP15 accesses
- Support guest WFI calls
- Uses debugfs instead of /proc
- Support compiling in Thumb mode
Changes since v2:
- Performs world-switch code
- Maps guest memory using 2nd stage translation
- Emulates co-processor 15 instructions
- Forwards I/O faults to QEMU.
---
Christ
This is a prepatory patch for the KVM/ARM implementation. KVM/ARM will use
the KVM_IRQ_LINE ioctl, which is currently conditional on
__KVM_HAVE_IOAPIC, but ARM obviously doesn't have any IOAPIC support and we
need a separate define.
Signed-off-by: Christoffer Dall
---
arch/ia64/includ
From: Marc Zyngier
In order to avoid compilation failure when KVM is not compiled in,
guard the mmu_notifier specific sections with both CONFIG_MMU_NOTIFIER
and KVM_ARCH_WANT_MMU_NOTIFIER, like it is being done in the rest of
the KVM code.
Signed-off-by: Marc Zyngier
---
include/linux/kvm_host
From: Christoffer Dall
Targets KVM support for Cortex A-15 processors.
Contains no real functionality but all the framework components,
make files, header files and some tracing functionality.
“Nothing to see here. Move along, move along..."
Most functionality is in arch/arm/kvm/* or arc
From: Christoffer Dall
Sets up the required registers to run code in HYP-mode from the kernel.
By setting the HVBAR the kernel can execute code in Hyp-mode with
the MMU disabled. The HVBAR initially points to initialization code,
which initializes other Hyp-mode registers and enables the MMU
;s
pointed to by the pgd as opposed to the non-hyp version which just
clears them.
Signed-off-by: Christoffer Dall
---
arch/arm/include/asm/pgtable-3level-hwdef.h |1 +
arch/arm/include/asm/pgtable.h |5 +++
arch/arm/kvm/guest.c|1 -
arch/arm/
functions are called from the main
KVM code.
Signed-off-by: Christoffer Dall
---
arch/arm/include/asm/kvm_mmu.h |5 ++
arch/arm/kvm/arm.c | 65 ++---
arch/arm/kvm/mmu.c | 103
3 files changed, 165
From: Christoffer Dall
Userspace can inject IRQs and FIQs through the KVM_IRQ_LINE VM ioctl.
This ioctl is used since the sematics are in fact two lines that can be
either raised or lowered on the VCPU - the IRQ and FIQ lines.
KVM needs to know which VCPU it must operate on and whether the FIQ
From: Christoffer Dall
Provides complete world-switch implementation to switch to other guests
running in non-secure modes. Includes Hyp exception handlers that
capture necessary exception information and stores the information on
the VCPU and KVM structures.
Switching to Hyp mode is done
From: Christoffer Dall
Adds a new important function in the main KVM/ARM code called
handle_exit() which is called from kvm_arch_vcpu_ioctl_run() on returns
from guest execution. This function examines the Hyp-Syndrome-Register
(HSR), which contains information telling KVM what caused the exit
From: Christoffer Dall
Handles the guest faults in KVM by mapping in corresponding user pages
in the 2nd stage page tables.
Introduces new ARM-specific kernel memory types, PAGE_KVM_GUEST and
pgprot_guest variables used to map 2nd stage memory for KVM guests.
Leverages MMU notifiers on KVM/ARM
From: Christoffer Dall
When the guest accesses I/O memory this will create data abort
exceptions and they are handled by decoding the HSR information
(physical address, read/write, length, register) and forwarding reads
and writes to QEMU which performs the device emulation.
Certain classes of
From: Christoffer Dall
When the guest executes a WFI instruction the operation is trapped to
KVM, which emulates the instruction in software. There is no correlation
between a guest executing a WFI instruction and actually putting the
hardware into a low-power mode, since a KVM guest is
On Mon, Mar 12, 2012 at 11:31 AM, Marc Zyngier wrote:
> On 12/03/12 06:52, Christoffer Dall wrote:
>> From: Christoffer Dall
>>
>> Handles the guest faults in KVM by mapping in corresponding user pages
>> in the 2nd stage page tables.
>>
>> Introduc
On Mon, Mar 12, 2012 at 3:32 PM, Alexander Graf wrote:
>
> On 08.03.2012, at 23:45, Christoffer Dall wrote:
>
>> Any comments on this one?
>
> While at it, how about you also add the PID? Otherwise it's pretty pointless
> to write information into the kernel log, as
On Tue, Mar 13, 2012 at 4:34 PM, Alexander Graf wrote:
>
> On 08.03.2012, at 22:44, Christoffer Dall wrote:
>
>> Any news on the status of this?
>>
>> On Thu, Feb 9, 2012 at 8:45 PM, Alexander Graf wrote:
>>>
>>> On 10.02.2012, at 02:40, Chris
I sent this out to the KVM/ARM mailing list, but figured KVM
developers may be interested as well.
Thanks,
Christoffer
-- Forwarded message --
From: Christoffer Dall
Date: Thu, May 5, 2011 at 7:49 PM
Subject: Goal: Cortex-A15 support
To: android-virt
Cc: Catalin Marinas
For
commenting, but will keep up with this for next release version.
Changes since v2:
- Performs world-switch code
- Maps guest memory using 2nd stage translation
- Emulates co-processor 15 instructions
- Forwards I/O faults to QEMU.
---
Christoffer Dall (8):
ARM: KVM: Initial skeleton to
Targets KVM support for Cortex A-15 processors.
Contains no real functionality but all the framework components,
make files, header files and some tracing functionality.
---
arch/arm/Kconfig |2
arch/arm/Makefile |1
arch/arm/include/asm/kvm.h
Adds support in the identity mapping feature that allows KVM to setup
identity mapping for the Hyp mode with the AP[1] bit set as required by
the specification and also supports freeing created sub pmd's after
finished use.
---
arch/arm/include/asm/pgtable-3level-hwdef.h |1 +
arch/arm/include
Sets up the required registers to run code in HYP-mode from the kernel.
No major controversies, but we should consider how to deal with SMP
support for hypervisor stack page.
Works by setting the HVBAR the kernel can execute code in Hyp-mode with
the MMU disabled which initializes other registers
Initializes a blank level-1 translation table for the second stage
translation and handles freeing it as well.
---
arch/arm/include/asm/kvm_host.h |4 ++-
arch/arm/include/asm/kvm_mmu.h |5
arch/arm/kvm/arm.c | 54 ++-
3 files change
Provides complete world-switch implementation to switch to other guests
runinng in non-secure modes. Includes Hyp exception handlers that
captures necessary exception information and stores the information on
the VCPU and KVM structures.
Only controversy may be the back-door call to __irq_svc (the
A few stub functions and support for emulating access to memory remap
registers PRRR and NMRR.
Provides some framework for handling trapped CP15 accesses in general.
---
arch/arm/include/asm/kvm_emulate.h |7 ++
arch/arm/kvm/arm.c | 73 +++-
arch/arm/kvm/arm_emul
Handles the guest faults in KVM by mapping in corresponding user pages
in the 2nd stage page tables.
Introduces new ARM-specific kernel memory types, PAGE_KVM_GUEST and
pgprot_guest variables used to map 2nd stage memory for KVM guests.
---
arch/arm/include/asm/pgtable-3level.h |9 +++
arch/a
When the guest accesses I/O memory this will create data abort
exceptions and they are handled by decoding the HSR information
(physical address, read/write, length, register) and forwarding reads
and writes to QEMU which performs the device emulation.
This requires changing the general flow somew
thanks, I will fix this for next version.
On Fri, Jun 3, 2011 at 5:53 PM, Jan Kiszka wrote:
> On 2011-06-03 17:31, Jan Kiszka wrote:
>> On 2011-06-03 17:03, Christoffer Dall wrote:
>>> Targets KVM support for Cortex A-15 processors.
>>>
>>> Contains no real
On Sun, Jun 5, 2011 at 4:00 PM, Avi Kivity wrote:
> On 06/05/2011 03:52 PM, Avi Kivity wrote:
>>
>> (series review - please have a cover letter in the future for this stuff)
>>
>
> Oh - you did - but in a separate thread. Oh well.
My internet router decided to reset immediately after sending the
On Sun, Jun 5, 2011 at 2:41 PM, Avi Kivity wrote:
> On 06/03/2011 06:03 PM, Christoffer Dall wrote:
>>
>> Initializes a blank level-1 translation table for the second stage
>> translation and handles freeing it as well.
>>
>> + start = (unsigned long)kvm
On Sun, Jun 5, 2011 at 5:14 PM, Avi Kivity wrote:
> On 06/05/2011 05:53 PM, Avi Kivity wrote:
>>
>> On 06/05/2011 05:50 PM, Christoffer Dall wrote:
>>>
>>> On Sun, Jun 5, 2011 at 2:41 PM, Avi Kivity wrote:
>>> > On 06/03/2011 06:03 PM, Christoffer D
On Sun, Jun 5, 2011 at 2:36 PM, Avi Kivity wrote:
> On 06/03/2011 06:03 PM, Christoffer Dall wrote:
>>
>> Targets KVM support for Cortex A-15 processors.
>>
>> Contains no real functionality but all the framework components,
>> make files, header fil
On Sun, Jun 5, 2011 at 4:58 PM, Jan Kiszka wrote:
> On 2011-06-05 16:18, Avi Kivity wrote:
>> On 06/05/2011 05:13 PM, Jan Kiszka wrote:
>>> On 2011-06-05 14:21, Avi Kivity wrote:
>>> > On 06/03/2011 06:53 PM, Jan Kiszka wrote:
>>> >> >> @@ -310,6 +310,7 @@ struct kvm_translation {
>>> >> >>
On Sun, Jun 5, 2011 at 5:14 PM, Jan Kiszka wrote:
> On 2011-06-05 17:10, Avi Kivity wrote:
>> On 06/05/2011 05:58 PM, Jan Kiszka wrote:
>>> >
>>> > Note that with KVM_SET_GSI_ROUTING (bad name for ARM...) we can even
>>> > choose if an irq line is connected to a kernel-emulated interrupt
>>> >
On Sun, Jun 5, 2011 at 6:27 PM, Alexander Graf wrote:
>
> On 05.06.2011, at 18:03, Christoffer Dall wrote:
>
> On Sun, Jun 5, 2011 at 2:36 PM, Avi Kivity wrote:
>
> On 06/03/2011 06:03 PM, Christoffer Dall wrote:
>
>
> [...]
>
> +if VIRTUALIZATION
>
> +
&
On Fri, Jun 10, 2011 at 11:58 AM, Catalin Marinas
wrote:
> On Fri, Jun 10, 2011 at 10:53:06AM +0100, Alexander Graf wrote:
>> Am 10.06.2011 um 11:23 schrieb Catalin Marinas :
>> > On Fri, Jun 10, 2011 at 09:40:34AM +0100, Christoffer Dall wrote:
>> >> OK, so I look
On Sun, Jun 5, 2011 at 2:48 PM, Avi Kivity wrote:
> On 06/03/2011 06:04 PM, Christoffer Dall wrote:
>>
>> Handles the guest faults in KVM by mapping in corresponding user pages
>> in the 2nd stage page tables.
>>
>>
>>
>> +static int user_mem_abort
>> >
>> > What are your thoughts about mmu notifier support?
>>
>> For what purpose? There is no swapping on ARM, so only case that jumps
>> to my mind is for KSM. And I'm not quite there yet :)
>
> Really? I imaging swapping will be needed for server workloads. mmu
> notifiers are also useful f
On Fri, Feb 15, 2013 at 2:22 PM, Marc Zyngier wrote:
> On 15/02/13 19:16, Christoffer Dall wrote:
>> On Fri, Feb 15, 2013 at 1:47 PM, Marc Zyngier wrote:
>>> On Fri, 15 Feb 2013 19:22:37 +0100, Marc Zyngier
>>> wrote:
>>>> On Fri, 15 Feb 2013
On Mon, Feb 18, 2013 at 3:01 PM, Scott Wood wrote:
> On 02/18/2013 06:21:59 AM, Gleb Natapov wrote:
>>
>> Copying Christoffer since ARM has in kernel irq chip too.
>>
>> On Wed, Feb 13, 2013 at 11:49:15PM -0600, Scott Wood wrote:
>> > Currently, devices that are emulated inside KVM are configured
On Wed, Feb 13, 2013 at 9:49 PM, Scott Wood wrote:
> Currently, devices that are emulated inside KVM are configured in a
> hardcoded manner based on an assumption that any given architecture
> only has one way to do it. If there's any need to access device state,
> it is done through inflexible o
On Mon, Feb 18, 2013 at 4:53 PM, Scott Wood wrote:
> On 02/18/2013 06:44:20 PM, Christoffer Dall wrote:
>>
>> On Wed, Feb 13, 2013 at 9:49 PM, Scott Wood
>> wrote:
>> > index 0350e0d..dbaf012 100644
>> > --- a/include/linux/kvm_host.h
>> > +++ b
On Tue, Feb 19, 2013 at 4:24 AM, Gleb Natapov wrote:
> On Mon, Feb 18, 2013 at 05:01:40PM -0600, Scott Wood wrote:
>> On 02/18/2013 06:21:59 AM, Gleb Natapov wrote:
>> >Copying Christoffer since ARM has in kernel irq chip too.
>> >
>> >On Wed, Feb 13, 2013 at 11:49:15PM -0600, Scott Wood wrote:
>>
On Tue, Feb 19, 2013 at 12:16 PM, Scott Wood wrote:
> On 02/18/2013 11:50:44 PM, Christoffer Dall wrote:
>>
>> On Mon, Feb 18, 2013 at 4:53 PM, Scott Wood
>> wrote:
>> > On 02/18/2013 06:44:20 PM, Christoffer Dall wrote:
>> >>
>> >> On Wed,
On Tue, Feb 26, 2013 at 05:40:10PM +, Peter Maydell wrote:
> KVM ARM support has just hit Linus' kernel tree, so we can
> finally commit this series to QEMU. Since all the patches got
> reviewed last time round this should be ready to commit.
> I plan to commit this via arm-devs.next.
>
> NB:
On Tue, Mar 05, 2013 at 02:42:54AM +, Marc Zyngier wrote:
> This patch series is reworking KVM/arm in order to prepare the code
> to be shared with the upcoming KVM/arm64.
>
> Nothing major here, just a lot of accessors, small cleanups and fixes
> to make the code useable on arm64.
>
> This c
xes
for you to fetch changes up to f42798c6898bf1e536673e798d263e492355162f:
ARM: KVM: Fix length of mmio access (2013-03-06 16:01:51 -0800)
--------
Christoffer Dall (1):
KVM: ARM: Reintroduce trace_kvm_hvc
Jonghwan Choi (1):
On Tue, Mar 05, 2013 at 03:18:00AM +, Marc Zyngier wrote:
> In order to be able to correctly profile what is happening on the
> host, we need to be able to identify when we're running on the guest,
> and log these events differently.
>
> Perf offers a simple way to register callbacks into KVM.
On Wed, Mar 6, 2013 at 7:54 PM, Marc Zyngier wrote:
> On Wed, 6 Mar 2013 16:31:48 -0800, Christoffer Dall
>
> wrote:
>
> Hi Christoffer,
>
>>
>> Please pull these KVM/ARM fixes mostly centered around preparation for
>> Marc's ARMv8 KVM work.
>
&
On Thu, Mar 7, 2013 at 10:40 AM, Gleb Natapov wrote:
> On Thu, Mar 07, 2013 at 07:57:23AM +0100, Marc Zyngier wrote:
>> On Wed, 6 Mar 2013 20:40:00 -0800, Christoffer Dall
>>
>> wrote:
>> > On Wed, Mar 6, 2013 at 7:54 PM, Marc Zyngier
>> wrote:
>
On Thu, Mar 7, 2013 at 11:09 AM, Marcelo Tosatti wrote:
> On Thu, Mar 07, 2013 at 07:57:23AM +0100, Marc Zyngier wrote:
>> On Wed, 6 Mar 2013 20:40:00 -0800, Christoffer Dall
>>
>> wrote:
>> > On Wed, Mar 6, 2013 at 7:54 PM, Marc Zyngier
>> wrote:
>
On Thu, Mar 7, 2013 at 7:12 PM, Marc Zyngier wrote:
> On Thu, 7 Mar 2013 16:09:00 -0300, Marcelo Tosatti
> wrote:
>> On Thu, Mar 07, 2013 at 07:57:23AM +0100, Marc Zyngier wrote:
>>> On Wed, 6 Mar 2013 20:40:00 -0800, Christoffer Dall
>>>
>>> wrote:
>
On Mon, Mar 11, 2013 at 3:38 AM, Marc Zyngier wrote:
> On 08/03/13 19:26, Christoffer Dall wrote:
>> On Thu, Mar 7, 2013 at 7:12 PM, Marc Zyngier wrote:
>>> On Thu, 7 Mar 2013 16:09:00 -0300, Marcelo Tosatti
>>> wrote:
>>>> On Thu, Mar 07, 2013 at 07:57:2
On Wed, Mar 13, 2013 at 5:59 PM, Alexander Graf wrote:
> When running on an exynos 5250 SoC, we don't initialize the architected
> timers. The chip however supports architected timers.
>
> When we don't initialize them, KVM will try to access them and run into
> NULL pointer dereferences attemptin
Hi guys,
I have an x86 question that I really hope you can help with:
Running the kvm-unit-tests on x86, I see a quite large difference
between I/O from the kernel, and I/O user (around 6,000 cycles) on two
separate platforms.
This is probably expected, but what is the explanation? If I correlat
On Tue, Apr 02, 2013 at 02:25:09PM +0100, Marc Zyngier wrote:
> The way we populate HYP mappings is a bit convoluted, to say the least.
> Passing a pointer around to keep track of the current PFN is quite
> odd, and we end-up having two different PTE accessors for no good
> reason.
>
> Simplify th
On Tue, Apr 02, 2013 at 02:25:10PM +0100, Marc Zyngier wrote:
> The current code for creating HYP mapping doesn't like to wrap
> around zero, which prevents from mapping anything into the last
> page of the virtual address space.
>
> It doesn't take much effort to remove this limitation, making
>
On Tue, Apr 02, 2013 at 02:25:11PM +0100, Marc Zyngier wrote:
> After the HYP page table rework, it is pretty easy to let the KVM
> code provide its own idmap, rather than expecting the kernel to
> provide it. It takes actually less code to do so.
>
> Signed-off-by: Marc Zyngier
> ---
> arch/arm
On Wed, Apr 03, 2013 at 11:00:39AM +0100, Marc Zyngier wrote:
> On 03/04/13 10:50, Will Deacon wrote:
> > On Tue, Apr 02, 2013 at 02:25:12PM +0100, Marc Zyngier wrote:
> >> We're about to move to a init procedure where we rely on the
> >> fact that the init code fits in a single page. Make sure we
ry(hyp_pgd, KERN_TO_HYP(addr));
> + kfree(hyp_pgd);
> + }
> +
> mutex_unlock(&kvm_hyp_pgd_mutex);
> }
>
> @@ -741,7 +745,7 @@ int kvm_mmu_init(void)
>
> return 0;
> out:
> - kfree(hyp_pgd);
> + free_hyp_pgds();
> return err;
> }
>
> --
> 1.8.1.4
>
>
Acked-by: Christoffer Dall
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On Tue, Apr 02, 2013 at 02:25:14PM +0100, Marc Zyngier wrote:
> Our HYP init code suffers from two major design issues:
> - it cannot support CPU hotplug, as we tear down the idmap very early
> - it cannot perform a TLB invalidation when switching from init to
> runtime mappings, as pages are man
On Wed, Apr 03, 2013 at 11:38:30AM +0100, Marc Zyngier wrote:
> On 03/04/13 11:07, Will Deacon wrote:
> > On Tue, Apr 02, 2013 at 02:25:14PM +0100, Marc Zyngier wrote:
> >> Our HYP init code suffers from two major design issues:
> >> - it cannot support CPU hotplug, as we tear down the idmap very e
gic_hyp_init();
> @@ -963,6 +972,12 @@ int kvm_arch_init(void *opaque)
> if (err)
> goto out_err;
>
> + err = register_cpu_notifier(&hyp_init_cpu_nb);
> + if (err) {
> + kvm_err("Cannot register HYP init CPU notifier (%d)\n", err);
> + goto out_err;
> + }
> +
> kvm_coproc_table_init();
> return 0;
> out_err:
> --
> 1.8.1.4
>
>
Acked-by: Christoffer Dall
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On Tue, Apr 02, 2013 at 02:25:08PM +0100, Marc Zyngier wrote:
> Over the past few weeks, I've gradually realized how broken our HYP
> idmap code is. Badly broken.
>
> The main problem is about supporting CPU hotplug. Imagine a CPU being
> initialized normally, running VMs, and then being powered d
On Thu, Apr 4, 2013 at 3:47 AM, Marc Zyngier wrote:
> On 04/04/13 00:15, Christoffer Dall wrote:
>> On Wed, Apr 03, 2013 at 11:00:39AM +0100, Marc Zyngier wrote:
>>> On 03/04/13 10:50, Will Deacon wrote:
>>>> On Tue, Apr 02, 2013 at 02:25:12PM +0100, Marc Zyngier wr
[...]
>> >> to give us some idea how much performance we would gain from each
>> >> approach? Thoughput should be completely unaffected anyway, since virtio
>> >> just coalesces kicks internally.
>> >
>> > Latency is dominated by the scheduling latency.
>> > This means virtio-net is not the best
On Thu, Apr 4, 2013 at 4:33 PM, Geoff Levand wrote:
> Include linux/cpu.h in kvm/arm.c. Fixes build errors like
> these with ARCH=arm64:
>
> arch/arm/kvm/arm.c: error: ‘CPU_STARTING_FROZEN’ undeclared
>
> Signed-off-by: Geoff Levand
> ---
> arch/arm/kvm/arm.c |1 +
> 1 file changed, 1 inser
On Thu, Apr 4, 2013 at 4:33 PM, Geoff Levand wrote:
> Hi Marcelo,
>
> These are a few fixups I found when running sparse and building Marc's 64 bit
> ARM tree. Please consider for 3.10.
"running sparse" - what does this mean?
-Christoffer
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On Thu, Apr 4, 2013 at 4:33 PM, Geoff Levand wrote:
> The routine force_vm_exit() is not referenced outside kvm/arm.c,
> so make it have static linkage.
>
> Signed-off-by: Geoff Levand
> ---
> arch/arm/include/asm/kvm_host.h |1 -
> arch/arm/kvm/arm.c |2 +-
> 2 files change
On Thu, Apr 4, 2013 at 4:33 PM, Geoff Levand wrote:
> Remove the unused and empty routine kvm_arch_set_memory_region().
>
> Signed-off-by: Geoff Levand
> ---
> arch/arm/kvm/arm.c |8
> 1 file changed, 8 deletions(-)
>
> diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
> index 86
On Thu, Apr 4, 2013 at 4:57 PM, Geoff Levand wrote:
> Hi Christoffer,
>
> On Thu, 2013-04-04 at 16:53 -0700, Christoffer Dall wrote:
>> On Thu, Apr 4, 2013 at 4:33 PM, Geoff Levand wrote:
>> > Hi Marcelo,
>> >
>> > These are a few fixups I found
On Thu, Apr 4, 2013 at 5:04 PM, Geoff Levand wrote:
> Hi Christoffer,
>
> On Thu, 2013-04-04 at 16:51 -0700, Christoffer Dall wrote:
>> On Thu, Apr 4, 2013 at 4:33 PM, Geoff Levand wrote:
>> > Include linux/cpu.h in kvm/arm.c. Fixes build errors like
>> > thes
On Sun, Apr 7, 2013 at 12:41 AM, Michael S. Tsirkin wrote:
> On Thu, Apr 04, 2013 at 04:32:01PM -0700, Christoffer Dall wrote:
>> [...]
>>
>> >> >> to give us some idea how much performance we would gain from each
>> >> >> approach? Thou
Hi Marcelo and Gleb,
The following changes since commit 41ef2d5678d83af030125550329b6ae8b74618fa:
Linux 3.9-rc7 (2013-04-14 17:45:16 -0700)
are available in the git repository at:
git://github.com/columbia/linux-kvm-arm.git kvm-arm-fixes-for-3.9
for you to fetch changes up to b03e1d4f253f2
t; + bool line_status)
> {
> u32 irq = irq_level->irq;
> unsigned int irq_type, vcpu_idx, irq_num;
> --
> 1.6.0.2
>
Acked-by: Christoffer Dall
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the bod
On Tue, Apr 16, 2013 at 2:03 PM, Marcelo Tosatti wrote:
> On Mon, Apr 15, 2013 at 01:52:15AM -0700, Christoffer Dall wrote:
>> Hi Marcelo and Gleb,
>>
>> The following changes since commit 41ef2d5678d83af030125550329b6ae8b74618fa:
>>
>> Linux 3.9-rc7 (201
The following changes since commit 31880c37c11e28cb81c70757e38392b42e695dc6:
Linux 3.9-rc6 (2013-04-07 20:49:54 -0700)
are available in the git repository at:
git://github.com/columbia/linux-kvm-arm.git kvm-arm-fixes-3.9
for you to fetch changes up to 865499ea90d399e0682bcce3ae7af2427763369
On Wed, Apr 17, 2013 at 3:45 AM, Gleb Natapov wrote:
> Marcelo has sent pull request yesterday and Linus pulled it
> already. Sorry if I was not clear. Generally specking we should not wait
> so late into the release to send fixes to Linus, exceptions happen of
> course.
I know, the reason everyt
On Wed, Apr 17, 2013 at 4:08 AM, Alexander Graf wrote:
>
> On 17.04.2013, at 13:05, Christoffer Dall wrote:
>
>> On Wed, Apr 17, 2013 at 3:45 AM, Gleb Natapov wrote:
>>> Marcelo has sent pull request yesterday and Linus pulled it
>>> already. Sorry if I was
f-by: Marc Zyngier
Signed-off-by: Christoffer Dall
---
arch/arm/kvm/coproc.c |4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c
index 4ea9a98..7bed755 100644
--- a/arch/arm/kvm/coproc.c
+++ b/arch/arm/kvm/coproc.c
@@ -79,11 +79,11
Hi Stephen,
I'm maintaining the KVM/ARM implementation, which was merged during
the 3.9 merge window.
I'd like for you to pull changes from my kvm-arm-next branch at
git://github.com/columbia/linux-kvm-arm.git into linux-next.
The merge procedure for this tree is typically through the kvm tree,
Unless I'm mistaken, the size field was encoded 4 bits off and a wrong
value was used for 64-bit FP registers.
Signed-off-by: Christoffer Dall
---
Documentation/virtual/kvm/api.txt | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/Documentation/virtua
On Mon, Apr 8, 2013 at 9:17 AM, Marc Zyngier wrote:
> Add the necessary infrastructure for identity-mapped HYP page
> tables. Idmap-ed code must be in the ".hyp.idmap.text" linker
> section.
>
> The rest of the HYP ends up in ".hyp.text".
>
> Signed-off-by: Marc Zyngier
> ---
> arch/arm64/kern
ev/null
> +++ b/arch/arm64/kvm/inject_fault.c
> @@ -0,0 +1,118 @@
> +/*
> + * Fault injection for 64bit guests.
> + *
> + * Copyright (C) 2012,2013 - ARM Ltd
> + * Author: Marc Zyngier
> + *
> + * Based on arch/arm/kvm/emulate.c
> + * Copyright (C) 2012 -
On Mon, Apr 08, 2013 at 05:17:10PM +0100, Marc Zyngier wrote:
> Define the arm64 specific MMU backend:
> - HYP/kernel VA offset
> - S2 4/64kB definitions
> - S2 page table populating and flushing
> - icache cleaning
>
> Reviewed-by: Christopher Covington
> Signed-off-by: Marc Zyngier
> ---
> ar
kvm/sys_regs_generic_v8.c
> >> @@ -0,0 +1,85 @@
> >> +/*
> >> + * Copyright (C) 2012,2013 - ARM Ltd
> >> + * Author: Marc Zyngier
> >> + *
> >> + * Based on arch/arm/kvm/coproc_a15.c:
> >> + * Copyright (C) 2012 - Virtual Open Systems a
gt; + * Copyright (C) 2012,2013 - ARM Ltd
> + * Author: Marc Zyngier
> + *
> + * Derived from arch/arm/kvm/guest.c:
> + * Copyright (C) 2012 - Virtual Open Systems and Columbia University
> + * Author: Christoffer Dall
> + *
> + * This program is free software; you can redis
On Mon, Apr 08, 2013 at 05:17:19PM +0100, Marc Zyngier wrote:
> The HYP mode world switch in all its glory.
>
> Implements save/restore of host/guest registers, EL2 trapping,
> IPA resolution, and additional services (tlb invalidation).
>
> Reviewed-by: Christopher Covington
> Signed-off-by: Mar
On Mon, Apr 08, 2013 at 05:17:21PM +0100, Marc Zyngier wrote:
> Add support for the in-kernel GIC emulation. The include file
> is a complete duplicate of the 32bit one - something to fix
> at one point.
seems like something that should be fixed sooner as opposed to later...
Is it hard?
>
> Revi
On Mon, Apr 08, 2013 at 05:17:22PM +0100, Marc Zyngier wrote:
> Add support for the in-kernel timer emulation. The include file
> is a complete duplicate of the 32bit one - something to fix
> at one point.
again, I'd really like to see this fixed before we merge the code...
>
> Reviewed-by: Chri
handle_exit.o
> kvm-$(CONFIG_KVM_ARM_HOST) += guest.o reset.o sys_regs.o
> sys_regs_generic_v8.o
>
> diff --git a/arch/arm64/kvm/regmap.c b/arch/arm64/kvm/regmap.c
> new file mode 100644
> index 000..bbc6ae3
> --- /dev/null
> +++ b/arch/arm64/kvm/regmap.c
> @@ -0
p-init.o handle_exit.o
> kvm-$(CONFIG_KVM_ARM_HOST) += guest.o reset.o sys_regs.o
> sys_regs_generic_v8.o
>
> diff --git a/arch/arm64/kvm/emulate.c b/arch/arm64/kvm/emulate.c
> new file mode 100644
> index 000..01d4713
> --- /dev/null
> +++ b/arch/arm64/kvm/emulate.
64_SYSREG_OP2_SHIFT 0
> +
> /* KVM_IRQ_LINE irq field index values */
> #define KVM_ARM_IRQ_TYPE_SHIFT 24
> #define KVM_ARM_IRQ_TYPE_MASK 0xff
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> new file mode 100644
> index 000..9df3b32
> --- /dev/nul
On Mon, Apr 08, 2013 at 05:17:28PM +0100, Marc Zyngier wrote:
> Provide the necessary infrastructure to trap coprocessor accesses that
> occur when running 32bit guests.
>
> Also wire SMC and HVC trapped in 32bit mode while were at it.
>
> Reviewed-by: Christopher Covington
> Signed-off-by: Marc
On Mon, Apr 08, 2013 at 05:17:31PM +0100, Marc Zyngier wrote:
> Add fault injection capability for 32bit guests.
looks ok, but seems we are duplicating some functionality here, but I
realize it may not be that easy to share due to different define names
for things like PSR_X_BIT... Did you look f
On Mon, Apr 08, 2013 at 05:17:32PM +0100, Marc Zyngier wrote:
> Wire the init of a 32bit vcpu by allowing 32bit modes in pstate,
> and providing sensible defaults out of reset state.
>
> This feature is of course conditioned by the presence of 32bit
> capability on the physical CPU, and is checked
On Mon, Apr 08, 2013 at 05:17:33PM +0100, Marc Zyngier wrote:
> Unsurprisingly, the arm64 userspace API is extremely similar to
> the 32bit one, the only significant difference being the ONE_REG
> register mapping.
>
> Signed-off-by: Marc Zyngier
> ---
> Documentation/virtual/kvm/api.txt | 55
>
don't have the necessary docs, but from what I can
gather this looks pretty good, so, assuming you address the comments I
gave (especially at the least clearly commenting on the index into the
kvm_regs struct):
Acked-by: Christoffer Dall
-Christoffer
>
> As we do not have a 64bi
On Mon, Mar 25, 2013 at 1:19 AM, Marc Zyngier wrote:
> Hi Alex,
>
> On Thu, 7 Mar 2013 11:30:20 +0100, Alexander Graf wrote:
>> On 05.03.2013, at 04:47, Marc Zyngier wrote:
>>
>>> Provide 64bit system register handling, modeled after the cp15
>>> handling for ARM.
>>>
>>> Signed-off-by: Marc Zyng
On Wed, Apr 24, 2013 at 3:04 AM, Marc Zyngier wrote:
> On 23/04/13 23:57, Christoffer Dall wrote:
>> On Mon, Apr 08, 2013 at 05:17:09PM +0100, Marc Zyngier wrote:
>>> Implement the injection of a fault (undefined, data abort or
>>> prefetch abort) into a 64bit
On Wed, Apr 24, 2013 at 4:10 AM, Will Deacon wrote:
> On Wed, Apr 24, 2013 at 12:03:10PM +0100, Marc Zyngier wrote:
>> On 23/04/13 23:58, Christoffer Dall wrote:
>> > I noticed that this doesn't do any cache cleaning. Are the MMU page
>> > table walks guarantee
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