Boris Ostrovsky writes:
> On 09/25/2015 09:59 AM, Konrad Rzeszutek Wilk wrote:
>> On Fri, Sep 25, 2015 at 11:59:52AM +0200, Vitaly Kuznetsov wrote:
>>> Currently there is a number of issues preventing PVHVM Xen guests from
>>> doing successful kexec/kdump:
obably OK as by default all unknown shutdown reasons cause domain destroy
with a message in toolstack log:
'Unknown shutdown reason code 5. Destroying domain.'
which gives a clue to what the problem is and eliminates false
expectations.
Signed-off-by: Vitaly Kuznetsov
---
arch/x86/
v11 of the 'toolstack-assisted approach to pvhvm guest kexec' is available here:
http://lists.xenproject.org/archives/html/xen-devel/2015-09/msg00547.html
Vitaly Kuznetsov (1):
(lib)xl: soft reset support
docs/man/xl.cfg.pod.5| 8 +-
tools/libxl/libxl.c
Use existing create/restore path to perform 'soft reset' for HVM
domains. Tear everything down, e.g. destroy domain's device model,
remove the domain from xenstore, save toolstack record and start
over.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v11:
- Minor descri
Wei Liu writes:
> Sorry for the delay.
>
> FYI all other patches of this series were applied by Jan. You only need
> to resend this one.
Cool, I will.
>
> See below for a few comments.
>
> On Fri, Sep 04, 2015 at 03:39:51PM +0200, Vitaly Kuznetsov wrote:
>> Use e
Use this in libxl_dm instead of hard-coding.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
---
Changes since v10:
- s,XC,LIBXL,g to meet the XC_DEVICE_MODEL_RESTORE_FILE ->
LIBXL_DEVICE_MODEL_RESTORE_FILE change.
---
tools/libxl/libxl_dm.c | 2 +-
tools/libxl/libxl_interna
As a preparation before adding new restart type (soft reset) put all
restart types into an enum.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
Reviewed-by: Konrad Rzeszutek Wilk
---
Changes since v10:
- None.
---
tools/libxl/xl.h | 6 ++
tools/libxl/xl_cmdimpl.c | 23
Add new soft_reset vector to domain2 class, add it to create_domain
in the default policy.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Daniel De Graaf
---
Changes since v10:
- None.
---
tools/flask/policy/policy/modules/xen/xen.if | 2 +-
xen/xsm/flask/hooks.c| 3 +++
xen
New domctl resets state for a domain allowing it to 'start over': register
vcpu_info, switch to FIFO ABI for event channels. Still active grants are
being logged to help debugging misbehaving backends.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Jan Beulich
---
Changes since v10:
- r
Introduce xc_domain_soft_reset() function supporting XEN_DOMCTL_soft_reset.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Wei Liu
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Ian Jackson
---
Changes since v10:
- None.
---
tools/libxc/include/xenctrl.h | 3 +++
tools/libxc/xc_domain.c | 9
ckends can cause a
domain to crash right after the soft reset operation and 'g' option won't be
available in this case.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Jan Beulich
---
Changes since v10:
- None.
---
xen/commo
This special type of shutdown is supposed to be used by PVHVM guests when
they want to perform some sort of kexec/kdump.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Jan Beulich
Reviewed-by: Konrad Rzeszutek Wilk
---
Changes since v10:
- None
---
xen/common/shutdown.c | 6 ++
xen
Use existing create/restore path to perform 'soft reset' for HVM
domains. Tear everything down, e.g. destroy domain's device model,
remove the domain from xenstore, save toolstack record and start
over.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v10:
- Adapt to 'm
x86-specific hook cleans up the pirq-emuirq mappings, destroys all ioreq
servers and and replaces the shared_info frame with an empty page to support
subsequent XENMAPSPACE_shared_info call.
ARM-specific hook is -ENOSYS for now.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: Konrad Rzeszutek Wilk
Use letter 'S' to indicate a domain in such state. Introduce new
'on_soft_reset' action and default it to 'restart' for now.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Wei Liu
---
Changes since v10:
- Add Acked-by: Wei Liu
- Add
We need to close all event channel so the domain performing soft reset
will be able to open them back.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Jan Beulich
---
Changes since v10:
- None.
---
xen/common/event_channel.c | 43
aware of this special page.
grant_table_warn_active_grants() is required to find possible misbehaving
backends in future.
v10 of the 'toolstack-assisted approach to pvhvm guest kexec' is available here:
http://lists.xen.org/archives/html/xen-devel/2015-07/msg05054.html
Vitaly
Wei Liu writes:
> [...]
>> diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
>> index 9f6ec00..87d8255 100644
>> --- a/tools/libxl/libxl_types.idl
>> +++ b/tools/libxl/libxl_types.idl
>> @@ -138,6 +138,8 @@ libxl_action_on_shutdown =
>> Enumeration("action_on_shutdown", [
>>
Wei Liu writes:
[skip]
>>
>> diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
>> index ff0d616..5f5559b 100644
>> --- a/tools/libxl/libxl.c
>> +++ b/tools/libxl/libxl.c
>> @@ -1478,6 +1478,7 @@ void libxl__domain_destroy(libxl__egc *egc,
>> libxl__domain_destroy_state *dds)
>>
"Ouyangzhaowei (Charles)" writes:
>>> Hi all:
>>>
>>> Now a days, we tested Redhat 6.2(6.4) on Xen(version 4.1.2).
>>> If we config the cpu number more than 32, it'll show 32 in
>>> the VM, and if we config it 64 cpus, the VM will crash and
>>> the log is list below.
>>>
>>> Can someone tell us w
Konrad Rzeszutek Wilk writes:
> On August 13, 2015 4:20:11 AM EDT, Vitaly Kuznetsov
> wrote:
>>"Hao, Xudong" writes:
>>
>>>> -Original Message-
>>>> From: Vitaly Kuznetsov [mailto:vkuzn...@redhat.com]
>>>> Sent: Wedn
"Hao, Xudong" writes:
>
> Attach the Fedora22 log, a different issue.
>
Here is the crash:
[ 6399.814801] xen_netfront: Initialising Xen virtual ethernet driver
[ 6399.814838] [drm] Initialized drm 1.1.0 20060810
[ 6399.838500] xen_netfront: can't alloc rx grant refs
[ 6399.838504] net eth0: on
"Hao, Xudong" writes:
>> -Original Message-
>> From: Vitaly Kuznetsov [mailto:vkuzn...@redhat.com]
>> Sent: Wednesday, August 12, 2015 5:40 PM
>> To: Hao, Xudong
>> Cc: xen-devel@lists.xen.org
>> Subject: Re: [Xen-devel] Failure to boot HV
"Hao, Xudong" writes:
> Hi,
>
> In X86_64 platform, we noticed an issue that Xen boot a RHEL6u6 or
> Fedora22 guest, when configure the VCPU more than 32, the guest will
> fail to boot up.
The issue is well-known for RHEL6.6 (and is fixed in 6.7 and in 6.6.z)
but Fedora22 should boot. The log b
"Jan Beulich" writes:
>>>> On 11.08.15 at 21:57, wrote:
>> On Tue, Jul 28, 2015 at 03:28:11PM +0200, Vitaly Kuznetsov wrote:
>>> @@ -1038,6 +1045,32 @@ void domain_unpause_except_self(struct domain *d)
>>> domain_unpause(d);
>>&g
Ian Campbell writes:
> (CC-ing 2x QEMU maintainers and stable release manager)
>
> The separate trees are a holdover from mercurial, which didn't (at the
> time) have a good in-repo branching model.
>
> I propose that Xen 4.6 should be the last release which uses these split
> trees and that inst
Use letter 'S' to indicate a domain in such state. Introduce new
'on_soft_reset' action and default it to 'restart' for now.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v9:
- None
---
docs/man/xl.cfg.pod.5 | 5 +
tools/libxl/libxl_types.
Use this in libxl_dm instead of hard-coding.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
---
Changes since v9:
- None
---
tools/libxc/include/xenguest.h | 2 ++
tools/libxl/libxl_dm.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/libxc/include
ckends can cause a
domain to crash right after the soft reset operation and 'g' option won't be
available in this case.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Jan Beulich
---
Changes since v9:
- Add Reviewed-by: [Konrad Rzeszutek Wilk]
- Do not
x86-specific hook cleans up the pirq-emuirq mappings, destroys all ioreq
servers and and replaces the shared_info frame with an empty page to support
subsequent XENMAPSPACE_shared_info call.
ARM-specific hook is -ENOSYS for now.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v9
As a preparation before adding new restart type (soft reset) put all
restart types into an enum.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
Reviewed-by: Konrad Rzeszutek Wilk
---
Changes since v9:
- None.
---
tools/libxl/xl.h | 6 ++
tools/libxl/xl_cmdimpl.c | 23
Use existing create/restore path to perform 'soft reset' for HVM
domains. Tear everything down, e.g. destroy domain's device model,
remove the domain from xenstore, save toolstack record and start
over.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v9:
- s,reset,Reset,
Introduce xc_domain_soft_reset() function supporting XEN_DOMCTL_soft_reset.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Wei Liu
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Ian Jackson
---
Changes since v9:
- None.
---
tools/libxc/include/xenctrl.h | 3 +++
tools/libxc/xc_domain.c | 9
New domctl resets state for a domain allowing it to 'start over': register
vcpu_info, switch to FIFO ABI for event channels. Still active grants are
being logged to help debugging misbehaving backends.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Jan Beulich
---
Changes since v9
We need to close all event channel so the domain performing soft reset
will be able to open them back.
Signed-off-by: Vitaly Kuznetsov
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Jan Beulich
---
Changes since v9:
- Add Reviewed-by: [Konrad Rzeszutek Wilk]
- Add Acked-by: [Jan Beulich
est kexec' is available here:
http://lists.xen.org/archives/html/xen-devel/2015-07/msg03377.html
Vitaly Kuznetsov (11):
xen: introduce SHUTDOWN_soft_reset shutdown reason
libxl: support SHUTDOWN_soft_reset shutdown reason
xl: introduce enum domain_restart_type
xen: evtchn: make evtchn_r
Add new soft_reset vector to domain2 class, add it to create_domain
in the default policy.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Daniel De Graaf
---
Changes since v9:
- None.
---
tools/flask/policy/policy/modules/xen/xen.if | 2 +-
xen/xsm/flask/hooks.c| 3 +++
xen
This special type of shutdown is supposed to be used by PVHVM guests when
they want to perform some sort of kexec/kdump.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Jan Beulich
Reviewed-by: Konrad Rzeszutek Wilk
---
Changes since v9:
- add Reviewed-by: [Konrad Rzeszutek Wilk]
- minor comment
"Jan Beulich" writes:
On 16.07.15 at 18:27, wrote:
>> --- a/xen/arch/x86/domain.c
>> +++ b/xen/arch/x86/domain.c
>> @@ -704,6 +704,90 @@ void arch_domain_unpause(struct domain *d)
>> viridian_time_ref_count_thaw(d);
>> }
>>
>> +int arch_domain_soft_reset(struct domain *d)
>> +{
Konrad Rzeszutek Wilk writes:
>>
>> @@ -1010,6 +1017,29 @@ int domain_unpause_by_systemcontroller(struct domain
>> *d)
>> return 0;
>> }
>>
>> +int domain_soft_reset(struct domain *d)
>> +{
>> +struct vcpu *v;
>> +int rc;
>> +
>> +spin_lock(&d->shutdown_lock);
>> +for_e
Konrad Rzeszutek Wilk writes:
...
>> +return AO_CREATE_FAIL(ERROR_FAIL);
>> +}
>> +
>> +/*
>> + * On the domain creation path it will be introduced to xenstore
>
> What is 'it'?
>
The domain :-)
>> + * with (probably) different store/console channels so we need to
>> +
Use existing create/restore path to perform 'soft reset' for HVM
domains. Tear everything down, e.g. destroy domain's device model,
remove the domain from xenstore, save toolstack record and start
over.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v8:
- Pause/unpase the do
Use this in libxl_dm instead of hard-coding.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
---
Changes since v8:
- None
---
tools/libxc/include/xenguest.h | 2 ++
tools/libxl/libxl_dm.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/libxc/include
x86-specific hook cleans up the pirq-emuirq mappings, destroys all ioreq
servers and and replaces the shared_info frame with an empty page to support
subsequent XENMAPSPACE_shared_info call.
ARM-specific hook is -ENOSYS for now.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v8:
- Comments
New domctl resets state for a domain allowing it to 'start over': register
vcpu_info, switch to FIFO ABI for event channels. Still active grants are
being logged to help debugging misbehaving backends.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v8:
- Introduce vcpu_info_rese
This special type of shutdown is supposed to be used by PVHVM guests when
they want to perform some sort of kexec/kdump.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v8:
- describe the expected behavior for 'soft reset' [Ian Jackson]
---
xen/common/shutdown.c | 6 ++
x
Introduce xc_domain_soft_reset() function supporting XEN_DOMCTL_soft_reset.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Wei Liu
Reviewed-by: Konrad Rzeszutek Wilk
Acked-by: Ian Jackson
---
Changes since v8:
- Add Wei's A-b.
- Add Konrad's R-b.
- Add Ian J A-b.
---
tools/libxc/include
As a preparation before adding new restart type (soft reset) put all
restart types into an enum.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
Reviewed-by: Konrad Rzeszutek Wilk
---
Changes since v8:
- add Konrad's R-b
Changes since v7:
- s,restarter,restarted, [Ian Cam
d to find possible misbehaving
backends in future.
v8 of the 'toolstack-assisted approach to pvhvm guest kexec' is available here:
http://lists.xen.org/archives/html/xen-devel/2015-06/msg03632.html
Vitaly Kuznetsov (11):
xen: introduce SHUTDOWN_soft_reset shutdown reason
libxl:
Add new soft_reset vector to domain2 class, add it to create_domain
in the default policy.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Daniel De Graaf
---
Changes since v8:
- Add Daniel's A-b.
---
tools/flask/policy/policy/modules/xen/xen.if | 2 +-
xen/xsm/flask/ho
ckends can cause a
domain to crash right after the soft reset operation and 'g' option won't be
available in this case.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v8:
- Use WARN_GRANT_MAX define instead of hardcoded 10 [Konrad Rzeszutek Wilk]
- Update commit message explaining
We need to close all event channel so the domain performing soft reset
will be able to open them back.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v8:
- Check !d->controller_pause_count instead of pausing/unpausing the domain
in evtchn_reset(). [Konrad Rzeszutek Wilk]
---
xen/com
Use letter 'S' to indicate a domain in such state. Introduce new
'on_soft_reset' action and default it to 'restart' for now.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v8:
- Introduce on_soft_reset here (moved from PATCH 11) [Ian Jackson]
---
docs/man
Julien Grall writes:
> Hi Vitaly,
>
> On 23/06/2015 18:11, Vitaly Kuznetsov wrote:
>> diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
>> index 24b8938..c112afa 100644
>> --- a/xen/arch/arm/domain.c
>> +++ b/xen/arch/arm/domain.c
>> @@ -653,6 +65
Ian Jackson writes:
> Vitaly Kuznetsov writes ("[PATCH v8 11/11] (lib)xl: soft reset support"):
>> Use existing create/restore path to perform 'soft reset' for HVM domains.
>> Tear everything down, e.g. destroy domain's device model, remove the domain
>
Ian Jackson writes:
> Konrad Rzeszutek Wilk writes ("Re: [PATCH v8 02/11] libxl: support
> SHUTDOWN_soft_reset shutdown reason"):
>> On Tue, Jun 23, 2015 at 06:11:44PM +0200, Vitaly Kuznetsov wrote:
>> > Use letter 'S' to indicate a domain in suc
Ian Jackson writes:
> Konrad Rzeszutek Wilk writes ("Re: [PATCH v8 01/11] xen: introduce
> SHUTDOWN_soft_reset shutdown reason"):
>> On Tue, Jun 23, 2015 at 06:11:43PM +0200, Vitaly Kuznetsov wrote:
>> > This special type of shutdown is supposed to be used by PVHV
Konrad Rzeszutek Wilk writes:
> On Tue, Jul 14, 2015 at 05:52:44PM +0200, Vitaly Kuznetsov wrote:
>> Konrad Rzeszutek Wilk writes:
>>
>> > On Tue, Jun 23, 2015 at 06:11:50PM +0200, Vitaly Kuznetsov wrote:
>> >> ...
>> >>
&g
Konrad Rzeszutek Wilk writes:
> On Tue, Jun 23, 2015 at 06:11:50PM +0200, Vitaly Kuznetsov wrote:
>> ...
>>
>> +int arch_domain_soft_reset(struct domain *d)
>> +{
>> +struct page_info *page = virt_to_page(d->shared_info), *new_page;
>> +
Konrad Rzeszutek Wilk writes:
> On Tue, Jun 23, 2015 at 06:11:47PM +0200, Vitaly Kuznetsov wrote:
>> Log first 10 active grants of a domain. This function is going to be used
>> for soft reset, active grants on this path usually mean misbehaving backends
>> refusing to rele
"Jan Beulich" writes:
>>>> On 13.07.15 at 11:08, wrote:
>> On Mon, 2015-07-13 at 09:45 +0100, Jan Beulich wrote:
>>> >>> On 10.07.15 at 18:24, wrote:
>>> > On Tue, Jun 23, 2015 at 06:11:47PM +0200, Vitaly Kuznetsov wrote:
>>> &
mem_access on ARM)
interfaces to using gft_t instead of unsigned long and update all users of
these functions.
There is also an issue in p2m_get_mem_access on x86: 'gfn' parameter passed to
gfn_lock/gfn_unlock is not defined. This code compiles only because of a
coincidence: gfn_lock/gfn
George Dunlap writes:
> On 07/02/2015 12:25 PM, Tim Deegan wrote:
>> At 12:09 +0100 on 02 Jul (1435838956), Andrew Cooper wrote:
>>> On 02/07/15 11:48, George Dunlap wrote:
Now in p2m_set_mem_access(), rather than just using an unsigned long in
the loop iterating over gfns, you do this
mem_access on ARM)
interfaces to using gft_t instead of unsigned long and update all users of
these functions.
There is also an issue in p2m_get_mem_access on x86: 'gfn' parameter passed to
gfn_lock/gfn_unlock is not defined. This code compiles only because of a
coincidence: gfn_lock/gfn
Andrew Cooper writes:
> On 26/06/15 16:17, Vitaly Kuznetsov wrote:
>> 'pfn' and 'start_pfn' are ambiguous, both these functions expect GFNs as
>> input.
>>
>> On x86 the interface of p2m_set_mem_access() in p2m.c doesn't match the
>> dec
n' parameter passed to
gfn_lock/gfn_unlock is not defined. This code compiles only because of a
coincidence: gfn_lock/gfn_unlock are currently macros which don't use their
second argument.
Signed-off-by: Vitaly Kuznetsov
---
Changes since v2:
- Instead of adding start_ prefix on ARM remov
writes:
> * toolstack-based approach to pvhvm guest kexec (fair)
>also contains hypervisor side change, v6
> - Vitaly Kuznetsov
it is already "[PATCH v8 00/11] toolstack-assisted approach to
PVHVM guest kexec" waiting for reviews and (IMHO) 'ok' (as I
"Jan Beulich" writes:
On 26.05.15 at 15:32, wrote:
>> --- a/xen/arch/arm/p2m.c
>> +++ b/xen/arch/arm/p2m.c
>> @@ -1709,9 +1709,9 @@ bool_t p2m_mem_access_check(paddr_t gpa, vaddr_t gla,
>> const struct npfec npfec)
>>
>> /*
>> * Set access type for a region of pfns.
>> - * If start_pf
As a preparation before adding new restart type (soft reset) put all
restart types into an enum.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
---
Changes since v7:
- s,restarter,restarted, [Ian Campbell]
---
tools/libxl/xl.h | 6 ++
tools/libxl/xl_cmdimpl.c | 23
Log first 10 active grants of a domain. This function is going to be used
for soft reset, active grants on this path usually mean misbehaving backends
refusing to release their mappings on shutdown.
Signed-off-by: Vitaly Kuznetsov
---
xen/common/grant_table.c | 31
We need to close all event channel so the domain performing soft reset
will be able to open them back.
Signed-off-by: Vitaly Kuznetsov
---
xen/common/event_channel.c | 38 +++---
xen/include/xen/event.h| 3 +++
2 files changed, 22 insertions(+), 19 deletions
Introduce xc_domain_soft_reset() function supporting XEN_DOMCTL_soft_reset.
Signed-off-by: Vitaly Kuznetsov
---
tools/libxc/include/xenctrl.h | 3 +++
tools/libxc/xc_domain.c | 9 +
2 files changed, 12 insertions(+)
diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include
Use existing create/restore path to perform 'soft reset' for HVM domains.
Tear everything down, e.g. destroy domain's device model, remove the domain
from xenstore, save toolstack record and start over.
Signed-off-by: Vitaly Kuznetsov
---
Changes since 'v7'
- &
Use this in libxl_dm instead of hard-coding.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
---
tools/libxc/include/xenguest.h | 2 ++
tools/libxl/libxl_dm.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/libxc/include/xenguest.h b/tools/libxc
Add new soft_reset vector to domain2 class, add it to create_domain
in the default policy.
Signed-off-by: Vitaly Kuznetsov
---
tools/flask/policy/policy/modules/xen/xen.if | 2 +-
xen/xsm/flask/hooks.c| 3 +++
xen/xsm/flask/policy/access_vectors | 2 ++
3 files
New domctl resets state for a domain allowing it to 'start over': register
vcpu_info, switch to FIFO ABI for event channels. Still active grants are
being logged to help debugging misbehaving backends.
Signed-off-by: Vitaly Kuznetsov
---
xen/common/domain.c
This patch series provides x86 PVHVM domains with an ability to perform
kexec/kdump-style operations.
The list of currently known issues blocking kexec (and why the series is
required) is:
- Bound event channels.
- Registered vcpu_info.
- PIRQ/emuirq mappings.
- shared_info frame after XENMAPSPACE
Use letter 'S' to indicate a domain in such state.
Signed-off-by: Vitaly Kuznetsov
Acked-by: Ian Campbell
---
tools/libxl/libxl_types.idl | 1 +
tools/libxl/xl_cmdimpl.c | 2 +-
tools/python/xen/lowlevel/xl/xl.c | 1 +
3 files changed, 3 insertions(+), 1 deletion(-)
x86-specific hook cleans up the pirq-emuirq mappings, destroys all ioreq
servers and and replaces the shared_info frame with an empty page to support
subsequent XENMAPSPACE_shared_info call.
ARM-specific hook is a noop for now.
Signed-off-by: Vitaly Kuznetsov
---
Changes since 'PATCH RF
This special type of shutdown is supposed to be used by PVHVM guests when
they want to perform some sort of kexec/kdump.
Signed-off-by: Vitaly Kuznetsov
---
xen/common/shutdown.c | 6 ++
xen/include/public/sched.h | 3 ++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a
"Jan Beulich" writes:
On 22.06.15 at 18:24, wrote:
>> "Jan Beulich" writes:
>>
>> On 22.06.15 at 18:00, wrote:
"Jan Beulich" writes:
On 03.06.15 at 15:35, wrote:
>> @@ -1129,8 +1129,9 @@ void unmap_vcpu_info(struct vcpu *v)
>> mfn = v->vcpu_info_mfn
"Jan Beulich" writes:
On 22.06.15 at 18:00, wrote:
>> "Jan Beulich" writes:
>>
>> On 03.06.15 at 15:35, wrote:
@@ -1129,8 +1129,9 @@ void unmap_vcpu_info(struct vcpu *v)
mfn = v->vcpu_info_mfn;
unmap_domain_page_global((void *)
"Jan Beulich" writes:
On 03.06.15 at 15:35, wrote:
>> @@ -1129,8 +1129,9 @@ void unmap_vcpu_info(struct vcpu *v)
>> mfn = v->vcpu_info_mfn;
>> unmap_domain_page_global((void *)
>> ((unsigned long)v->vcpu_info & PAGE_MASK));
>> -
>> -v->vcpu_info =
Tim Deegan writes:
> At 15:35 +0200 on 03 Jun (1433345722), Vitaly Kuznetsov wrote:
>> x86-specific hook cleans up the pirq-emuirq mappings and replaces the
>> shared_info frame with an empty page to support subsequent
>> XENMAPSPACE_shared_info call.
>
> That'
"Jan Beulich" writes:
On 03.06.15 at 15:35, wrote:
>> +int arch_domain_soft_reset(struct domain *d)
>> +{
>> +struct page_info *page = virt_to_page(d->shared_info), *new_page;
>> +int ret = 0;
>> +struct domain *owner;
>> +unsigned long mfn, mfn_new, gfn;
>> +p2m_type_t
"Jan Beulich" writes:
On 03.06.15 at 15:35, wrote:
>> --- a/xen/common/event_channel.c
>> +++ b/xen/common/event_channel.c
>> @@ -274,11 +274,13 @@ static long
>> evtchn_bind_interdomain(evtchn_bind_interdomain_t *bind)
>>
>> lchn->u.interdomain.remote_dom = rd;
>> lchn->u.int
"Jan Beulich" writes:
On 03.06.15 at 15:35, wrote:
>> When soft reset is being performed we need to replace all actively
>> granted pages with empty pages to prevent possible future memory
>> corruption as the newly started kernel won't be aware of these
>> granted pages.
>>
>> We make the
Reset event channels, replace grant pages with empty ones, unmount
previously mounted vcpu_info.
Signed-off-by: Vitaly Kuznetsov
---
xen/common/domain.c| 37 +
xen/common/schedule.c | 4
xen/include/public/sched.h | 7 +++
xen/include
need to belong to someone and we don't want to implement possible DoS by
reassigning them to the grantee/anonymous domain/xen/.. (the malicious guest
will be able to consume all host's memory).
Signed-off-by: Vitaly Kuznetsov
---
xen/common/grant
el/2015-05/,
there are no messages in May after May, 26 and this series was sent on May, 27)
Vitaly Kuznetsov (4):
xen: evtchn: make evtchn_reset() ready for soft reset
xen: grant_table: implement grant_table_soft_reset()
xen: implement SCHEDOP_soft_reset
xen: arch-specific hooks for domain
x86-specific hook cleans up the pirq-emuirq mappings and replaces the
shared_info frame with an empty page to support subsequent
XENMAPSPACE_shared_info call.
ARM-specific hook is a noop for now.
Signed-off-by: Vitaly Kuznetsov
---
xen/arch/arm/domain.c| 5
xen/arch/x86/domain.c
blish it.
Signed-off-by: Vitaly Kuznetsov
---
xen/common/event_channel.c | 52 +++---
xen/include/xen/event.h| 3 +++
xen/include/xen/sched.h| 1 +
3 files changed, 35 insertions(+), 21 deletions(-)
diff --git a/xen/common/event_channel.c b/xen/c
Ian Campbell writes:
> On Thu, 2015-05-28 at 15:41 +0200, Vitaly Kuznetsov wrote:
>> > I.e. what you currently implement is David's model without Konrad's
>> > later alternative really having been explored? Iiuc David's main
>> > reservation (which I
Tim Deegan writes:
> At 15:11 +0200 on 28 May (1432825919), Vitaly Kuznetsov wrote:
>> Tim Deegan writes:
>> > At 13:56 +0200 on 28 May (1432821360), Vitaly Kuznetsov wrote:
>> >> Tim Deegan writes:
>> >> >> +
"Jan Beulich" writes:
On 28.05.15 at 14:27, wrote:
>> "Jan Beulich" writes:
>>
>> On 27.05.15 at 17:25, wrote:
This patch series provides x86 PVHVM domains with an ability to perform
kexec/kdump-style operations.
>>>
>>> Before I get to look at this latest version, may I go
Tim Deegan writes:
> At 13:56 +0200 on 28 May (1432821360), Vitaly Kuznetsov wrote:
>> Tim Deegan writes:
>> >> +last_gmfn = domain_get_maximum_gpfn(source_d);
>> >> +gmfn = *gmfn_start;
>> >> +while ( gmfn <= last_gmfn )
>> >
"Jan Beulich" writes:
On 27.05.15 at 17:25, wrote:
>> This patch series provides x86 PVHVM domains with an ability to perform
>> kexec/kdump-style operations.
>
> Before I get to look at this latest version, may I go a step back and
> ask for clarification whether all of these (seemingly fr
Tim Deegan writes:
> Hi,
>
> At 17:25 +0200 on 27 May (1432747540), Vitaly Kuznetsov wrote:
>> New operation reassigns all memory pages from source domain to the
>> destination
>> domain mapping them at exactly the same GFNs. Pages mapped more than once
>>
Perform soft reset when a domain did SHUTDOWN_soft_reset. Migrate the
content with xc_domain_soft_reset(), reload dm and toolstack.
Signed-off-by: Vitaly Kuznetsov
---
Changes in v7:
- Save toolstack earlier.
- Introduce LIBXL_HAVE_SOFT_RESET [Wei Liu]
---
docs/man/xl.cfg.pod.5| 12
As a preparation before adding new restart type (soft reset) put all
restart types into an enum.
Signed-off-by: Vitaly Kuznetsov
---
tools/libxl/xl.h | 6 ++
tools/libxl/xl_cmdimpl.c | 23 ++-
2 files changed, 16 insertions(+), 13 deletions(-)
diff --git a
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