Hey Ackerley,
On Tue, 2024-09-10 at 23:43 +, Ackerley Tng wrote:
> Hello,
>
> This patchset is our exploration of how to support 1G pages in
> guest_memfd, and
> how the pages will be used in Confidential VMs.
We've discussed this patchset at LPC and in the guest-memfd calls. Can
you please
On Tue, 2025-01-28 at 13:52 +0800, oushixiong1...@163.com wrote:
> From: Shixiong Ou
>
> Convert to devm_* funcs so that no need to manual free in error path.
>
> Signed-off-by: Shixiong Ou
> ---
> drivers/char/virtio_console.c | 43 ++---
> --
> 1 file changed, 17
t it
> depends
> on disabling page faults or preemption.
>
> [1] https://lwn.net/Articles/836144/
> [2]
> https://docs.kernel.org/mm/highmem.html#temporary-virtual-mappings
>
> Signed-off-by: David Reaver
Reviewed-by: Amit Shah
ot;virtio: console: Add a new MULTIPORT feature,
> support for generic ports")
> Signed-off-by: Michael S. Tsirkin
Reviewed-by: Amit Shah
; debugfs is working "properly" or not, there is no need to check the
> return value of debugfs calls, so remove the checks here as they will
> never be triggered and are wrong.
>
> Cc: Amit Shah
> Cc: Arnd Bergmann
> Cc: virtualizat...@lists.linux-foundation.org
> Cc
On Mon, Aug 31, 2020 at 06:58:50PM +0200, Michal Suchanek wrote:
> Make it possible to have virtio console built-in when
> other virtio drivers are modular.
>
> Signed-off-by: Michal Suchanek
Reviewed-by: Amit Shah
> ---
> drivers/char/Kconfig | 3 ++-
> 1 file change
ta bss dec hex filename
> 25447 713 76 26236667c drivers/char/virtio_console.o
>
> After:
>textdata bss dec hex filename
> 25488 673 76 26237667d drivers/char/virtio_console.o
>
> Signed-off-by: Rikard Falkeborn
On Fri, 2019-05-24 at 20:51 +0200, Greg KH wrote:
> On Sun, Apr 28, 2019 at 09:50:04AM +0800, zhenwei pi wrote:
> > A bug can be easily reproduced:
> > Host# cat guest-agent.xml
> >
> >
> >> state="connected"/>
> >
> > Host# virsh attach-device instance guest-agent.xml
> > Host# virsh deta
On (Thu) 03 May 2018 [22:28:32], Michael S. Tsirkin wrote:
> On Thu, May 03, 2018 at 05:45:29AM +0200, Amit Shah wrote:
> > (apologies if you received a dup)
> >
> > On (Tue) 24 Apr 2018 [21:41:29], Michael S. Tsirkin wrote:
> > > On Fri, Apr 20, 2018 at 09:17:59PM +
On (Thu) 03 May 2018 [22:28:32], Michael S. Tsirkin wrote:
> On Thu, May 03, 2018 at 05:45:29AM +0200, Amit Shah wrote:
> > (apologies if you received a dup)
> >
> > On (Tue) 24 Apr 2018 [21:41:29], Michael S. Tsirkin wrote:
> > > On Fri, Apr 20, 2018 at 09:17:59PM +
(apologies if you received a dup)
On (Tue) 24 Apr 2018 [21:41:29], Michael S. Tsirkin wrote:
> On Fri, Apr 20, 2018 at 09:17:59PM +0300, Michael S. Tsirkin wrote:
> > Turns out virtio console tries to take a buffer out of an active vq.
> > Works by sheer luck, and is explicitly forbidden by spec.
On (Tue) 24 Apr 2018 [21:41:29], Michael S. Tsirkin wrote:
> On Fri, Apr 20, 2018 at 09:17:59PM +0300, Michael S. Tsirkin wrote:
> > Turns out virtio console tries to take a buffer out of an active vq.
> > Works by sheer luck, and is explicitly forbidden by spec. And while
> > going over it I saw
On 24 April 2018 11:41:29 AM GMT-07:00, "Michael S. Tsirkin"
wrote:
>On Fri, Apr 20, 2018 at 09:17:59PM +0300, Michael S. Tsirkin wrote:
>> Turns out virtio console tries to take a buffer out of an active vq.
>> Works by sheer luck, and is explicitly forbidden by spec. And while
>> going over
. Y. Srinivasan"
CC: Liu Shuo
CC: Anoob Soman
Signed-off-by: Amit Shah
---
drivers/xen/events/events_base.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index c86d10e..a299586 100644
---
rovsky
CC: Eduardo Valentin
CC: Juergen Gross
CC: Thomas Gleixner
CC: "K. Y. Srinivasan"
CC: Liu Shuo
CC: Anoob Soman
Signed-off-by: Amit Shah
---
drivers/xen/events/events_base.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/xen/events/events_base.c
u Shuo
CC: Anoob Soman
Amit Shah (2):
xen: fix out-of-bounds irq unbind for MSI message groups
xen: events: free irqs in error condition
drivers/xen/events/events_base.c | 9 +++--
1 file changed, 7 insertions(+), 2 deletions(-)
--
2.7.3.AMZN
Amazon Development Center Germany G
Hello,
These bugs were found during code review. Details in the commits.
Please review and apply.
CC: Roger Pau Monné
CC: David Vrabel
CC: Boris Ostrovsky
CC: Eduardo Valentin
CC: Juergen Gross
CC: Thomas Gleixner
CC: "K. Y. Srinivasan"
CC: Liu Shuo
CC: Anoob Soman
Am
er
CC: "K. Y. Srinivasan"
CC: Liu Shuo
CC: Anoob Soman
Signed-off-by: Amit Shah
---
drivers/xen/events/events_base.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index b6b8b29..96aa575 100644
--- a/drivers/xen/
Vrabel
CC: Boris Ostrovsky
CC: Eduardo Valentin
CC: Juergen Gross
CC: Thomas Gleixner
CC: "K. Y. Srinivasan"
CC: Liu Shuo
CC: Anoob Soman
Signed-off-by: Amit Shah
---
drivers/xen/events/events_base.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/xen/events/events_base.c
oe Perches
Reviewed-by: Amit Shah
Thanks,
Amit
--
http://log.amitshah.net/
On (Fri) 03 Feb 2017 [17:11:49], Michael S. Tsirkin wrote:
> On Fri, Feb 03, 2017 at 04:48:14PM +0530, Amit Shah wrote:
> > I'm leaving my job at Red Hat, this email address will stop working next
> > week.
> > Update it to one that I will have access to later.
> &g
I'm leaving my job at Red Hat, this email address will stop working next week.
Update it to one that I will have access to later.
Signed-off-by: Amit Shah
---
MAINTAINERS | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index 3960e7f..187b961 1
reasonable. I wonder since all implementations of hvc do a
memcpy, if we can abstract it - but that'll need some work.
Reviewed-by: Amit Shah
Michael, please add to the virtio queue.
Amit
fig_work_handler);
>
> It leads to a crash when portdev->vdev is dereferenced later. This bug
> is triggered when the guest uses a virtio-console without multiport
> feature and receives a config_changed virtio interrupt.
>
> Signed-off-by: G. Campana
Reviewed-by: A
On (Sat) 14 Jan 2017 [11:38:39], G. Campana wrote:
> Using control_work instead of config_work as the 3rd argument to
> container_of results in an invalid portdev pointer. Indeed, the work
> structure is initialized as below:
>
> INIT_WORK(&portdev->config_work, &config_work_handler);
>
> It
vqs, and release it while the
> buffer is being freed.
>
> Fixes: c6017e793b93 ("virtio: console: add locks around buffer removal in
> port unplug path")
> Cc: sta...@vger.kernel.org
> Signed-off-by: Matt Redfearn
Reviewed-by: Amit Shah
Michael, can you pick this up?
Thanks,
Amit
Hi,
On (Wed) 14 Sep 2016 [16:01:28], SF Markus Elfring wrote:
> From: Markus Elfring
> Date: Wed, 14 Sep 2016 14:00:35 +0200
>
> The kfree() function was called in up to five cases
> by the init_vqs() function during error handling even if
> the passed variable contained a null pointer.
>
> * R
, but it breaks completely
> if the stack is virtually mapped.
>
> Tested by typing both directions using picocom aimed at /dev/hvc0.
>
> Signed-off-by: Andy Lutomirski
Looks fine,
Reviewed-by: Amit Shah
> ---
>
> Hi all-
>
> This is currently broken in tip:x86/asm. I
On (Mon) 25 Apr 2016 [14:04:06], Michael S. Tsirkin wrote:
> On Mon, Apr 25, 2016 at 11:36:41AM +0530, Amit Shah wrote:
> > On (Tue) 19 Apr 2016 [22:34:32], Liang Li wrote:
> > > Current QEMU live migration implementation mark all guest's RAM pages
> > > as dirtied
On (Tue) 19 Apr 2016 [22:34:32], Liang Li wrote:
> Current QEMU live migration implementation mark all guest's RAM pages
> as dirtied in the ram bulk stage, all these pages will be processed
> and it consumes quite a lot of CPU cycles and network bandwidth.
>
> From guest's point of view, it doesn
On (Thu) 10 Mar 2016 [07:44:19], Li, Liang Z wrote:
>
> Hi Amit,
>
> Could provide more information on how to use virtio-serial to exchange data?
> Thread , Wiki or code are all OK.
> I have not find some useful information yet.
See this commit in the Linux sources:
108fc82596e3b66b819df9d
On (Thu) 10 Mar 2016 [12:31:32], Jitendra Kolhe wrote:
> On 3/8/2016 4:44 PM, Amit Shah wrote:
> >>>> Hi,
> >>>> An interesting solution; I know a few different people have been
> >>>> looking at
> >>>> how to speed up ballooned VM
On (Thu) 03 Mar 2016 [18:44:24], Liang Li wrote:
> The current QEMU live migration implementation mark the all the
> guest's RAM pages as dirtied in the ram bulk stage, all these pages
> will be processed and that takes quit a lot of CPU cycles.
>
> From guest's point of view, it doesn't care abou
On (Fri) 04 Mar 2016 [15:02:47], Jitendra Kolhe wrote:
> > >
> > > * Liang Li (liang.z...@intel.com) wrote:
> > > > The current QEMU live migration implementation mark the all the
> > > > guest's RAM pages as dirtied in the ram bulk stage, all these pages
> > > > will be processed and that takes qu
if (!portdev->vdev)
> - return 0;
> + return false;
Reviewed-by: Amit Shah
Amit
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> Signed-off-by: Michael S. Tsirkin
Reviewed-by: Amit Shah
Amit
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On (Sat) 28 Feb 2015 [18:41:34], Michael S. Tsirkin wrote:
> when multiport is off, we don't initialize config work,
> but we then cancel uninitialized control_work on freeze.
>
> Signed-off-by: Michael S. Tsirkin
Reviewed-by: Amit Shah
Amit
--
To unsubscri
On (Mon) 09 Feb 2015 [10:26:29], Rusty Russell wrote:
> virtio: don't require a config space on the console device.
>
> Strictly, it's only needed when we have features (size or multiport).
>
> Signed-off-by: Rusty Russell
Reviewed-by: Amit Shah
> diff --git a/dri
On (Tue) 20 Jan 2015 [13:09:55], Michael S. Tsirkin wrote:
> On Tue, Jan 20, 2015 at 04:10:40PM +0530, Amit Shah wrote:
> > On (Wed) 14 Jan 2015 [19:27:35], Michael S. Tsirkin wrote:
> > > Some devices might not implement config space access
> > > (e.g. remotepr
On (Wed) 14 Jan 2015 [19:27:35], Michael S. Tsirkin wrote:
> Some devices might not implement config space access
> (e.g. remoteproc used not to - before 3.9).
> virtio/console needs config space access so make it
> fail gracefully if not there.
Do we know any such devices? Wondering what prompte
On (Tue) 07 Oct 2014 [15:53:55], Michael S. Tsirkin wrote:
> On Mon, Oct 06, 2014 at 06:10:40PM +0300, Michael S. Tsirkin wrote:
> > On restore, virtio pci does the following:
> > + set features
> > + init vqs etc - device can be used at this point!
> > + set ACKNOWLEDGE,DRIVER and DRIVER_OK status
port butden for the hypervisors.
>
> Cc: sta...@vger.kernel.org
> Cc: Amit Shah
> Signed-off-by: Michael S. Tsirkin
I didn't see my previous questions answered from the initial posting
-- can you please respond to them?
Amit
--
To unsubscribe from this list: send t
ich
> requires the following order:
> - ACKNOWLEDGE
> - DRIVER
> - init vqs
> - DRIVER_OK
>
> Cc: sta...@vger.kernel.org
> Cc: Amit Shah
> Signed-off-by: Michael S. Tsirkin
> ---
>
> Lightly tested.
> Will repost as non-RFC once testing is done, sending
> ou
initialization
> of
> this flag to 0 to let the kthreads run.
>
> Reported-by: Amit Shah
> Signed-off-by: Pranith Kumar
> Link: http://www.spinics.net/lists/kernel/msg1802899.html
> ---
> kernel/rcu/tree.h| 2 +-
> kernel/rcu/tree_plugin.h | 24 --
Hey Greg,
Can you add these two patches to the 3.16 queue?
Thanks,
On (Tue) 12 Aug 2014 [13:23:45], Amit Shah wrote:
> Instead of calling hwrng_register() in the probe routing, call it in the
> scan routine. This ensures that when hwrng_register() is successful,
> and it requests a f
On (Sat) 23 Aug 2014 [03:43:38], Pranith Kumar wrote:
> On Fri, Aug 22, 2014 at 5:53 PM, Paul E. McKenney
> wrote:
> >
> > Hmmm... Please try replacing the synchronize_rcu() in
> > __sysrq_swap_key_ops() with (say) schedule_timeout_interruptible(HZ / 10).
> > I bet that gets rid of the hang. (An
On (Fri) 22 Aug 2014 [22:44:05], Amit Shah wrote:
> Hm, found it:
>
> The stall happens in do_initcalls().
>
> pm_sysrq_init() is the function that causes the hang. When I #if 0
> the line
>
> register_sysrq_key('o', &sysrq_poweroff_op);
>
> in
On (Fri) 22 Aug 2014 [07:48:19], Paul E. McKenney wrote:
> On Fri, Aug 22, 2014 at 06:26:49PM +0530, Amit Shah wrote:
> > On (Fri) 22 Aug 2014 [18:06:51], Amit Shah wrote:
> > > On (Fri) 22 Aug 2014 [17:54:53], Amit Shah wrote:
> > > > On (Mon) 18 Aug 2014 [21:
On (Fri) 22 Aug 2014 [18:06:51], Amit Shah wrote:
> On (Fri) 22 Aug 2014 [17:54:53], Amit Shah wrote:
> > On (Mon) 18 Aug 2014 [21:01:49], Paul E. McKenney wrote:
> >
> > > The odds are low over the next few days. I am adding nastier rcutorture
> > > testing,
On (Fri) 22 Aug 2014 [17:54:53], Amit Shah wrote:
> On (Mon) 18 Aug 2014 [21:01:49], Paul E. McKenney wrote:
>
> > The odds are low over the next few days. I am adding nastier rcutorture
> > testing, however. It would still be very good to get debug information
> &g
On (Tue) 19 Aug 2014 [19:20:20], Paolo Bonzini wrote:
> Il 07/08/2014 15:09, Amit Shah ha scritto:
> > +udevrules_DATA = 90-virtio-rng.rules
>
> If rng-tools is packaged with "make dist" you need this to be
>
> dist_udevrules_DATA= 90-virtio-
On (Fri) 15 Aug 2014 [08:04:05], Paul E. McKenney wrote:
> On Fri, Aug 15, 2014 at 10:54:11AM +0530, Amit Shah wrote:
> > On (Wed) 13 Aug 2014 [06:00:49], Paul E. McKenney wrote:
> > > On Wed, Aug 13, 2014 at 11:14:39AM +0530, Amit Shah wrote:
> > > > On (Tue)
On (Wed) 13 Aug 2014 [06:00:49], Paul E. McKenney wrote:
> On Wed, Aug 13, 2014 at 11:14:39AM +0530, Amit Shah wrote:
> > On (Tue) 12 Aug 2014 [14:41:51], Paul E. McKenney wrote:
> > > On Tue, Aug 12, 2014 at 02:39:36PM -0700, Paul E. McKenney wrote:
> > > > On T
virtio: rng: add derating factor for use by hwrng core (2014-08-15 10:26:01
+0530)
----
Amit Shah (1):
virtio: rng: add derating factor for use by hwrng core
drivers/char/hw_random/virtio-rng.c | 1 +
1 file changed, 1 insertion(
nd to cause all sorts of badness, and a
compromised hwrng is the least of the user's worries.
Given this, we might as well assume that the quality of randomness we
receive is perfectly trustworthy. Hence, we use 100% for the factor,
indicating maximum confidence in the source.
Signed-off-by:
On (Tue) 12 Aug 2014 [14:41:51], Paul E. McKenney wrote:
> On Tue, Aug 12, 2014 at 02:39:36PM -0700, Paul E. McKenney wrote:
> > On Tue, Aug 12, 2014 at 09:06:21AM -0700, Paul E. McKenney wrote:
> > > On Tue, Aug 12, 2014 at 11:03:21AM +0530, Amit Shah wrote:
> >
> >
ts of badness, and a compromised hwrng is not
the biggest threat.
Given this, we are certain the quality of randomness we receive is
perfectly trustworthy. Hence, we use 100% for the factor, indicating
maximum confidence in the source.
Signed-off-by: Amit Shah
---
Pretty small and contained patch;
On (Tue) 12 Aug 2014 [15:41:35], Greg KH wrote:
> On Tue, Aug 12, 2014 at 12:36:54PM +0530, Amit Shah wrote:
> > Instead of calling hwrng_register() in the probe routing, call it in the
> > scan routine. This ensures that when hwrng_register() is successful,
> > and it reques
yet setup completely.
Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell
(cherry picked from commit eeec626366ffe558fc3d5685bd2b49a962acf57d)
Signed-off-by: Amit Shah
---
drivers/char/hw_random/core.c | 6 --
drivers/char/hw_random/virtio-rng.c | 9 -
2 files changed,
load and re-load the module, and hope things succeed the
next time around.
Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell
(cherry picked from commit 5c06273401f2eb7b290cadbae18ee00f8f65e893)
Signed-off-by: Amit Shah
---
drivers/char/hw_random/virtio-rng.c | 25 +++--
yet setup completely.
Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell
(cherry picked from commit eeec626366ffe558fc3d5685bd2b49a962acf57d)
Signed-off-by: Amit Shah
---
drivers/char/hw_random/core.c | 6 --
drivers/char/hw_random/virtio-rng.c | 9 -
2 files changed,
load and re-load the module, and hope things succeed the
next time around.
Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell
(cherry picked from commit 5c06273401f2eb7b290cadbae18ee00f8f65e893)
Signed-off-by: Amit Shah
Conflicts:
drivers/char/hw_random/virtio-rng.c
Context
On (Tue) 12 Aug 2014 [13:55:48], Greg KH wrote:
> On Tue, Aug 12, 2014 at 11:01:58AM +0530, Amit Shah wrote:
> > On (Tue) 12 Aug 2014 [06:55:27], Greg KH wrote:
> > > On Mon, Aug 11, 2014 at 06:11:47PM +0530, Amit Shah wrote:
> > > > This is a 3.16-onl
On (Mon) 11 Aug 2014 [20:45:31], Paul E. McKenney wrote:
> On Mon, Aug 11, 2014 at 01:34:21PM -0700, Paul E. McKenney wrote:
> > On Tue, Aug 12, 2014 at 01:48:45AM +0530, Amit Shah wrote:
> > > On (Mon) 11 Aug 2014 [13:11:02], Paul E. McKenney wrote:
> > > > On T
On (Tue) 12 Aug 2014 [06:55:27], Greg KH wrote:
> On Mon, Aug 11, 2014 at 06:11:47PM +0530, Amit Shah wrote:
> > This is a 3.16-only patch. The linux.git fix is
> > 5c06273401f2eb7b290cadbae18ee00f8f65e893, which fixes this issue in a
> > different way.
>
> Why &qu
On (Mon) 11 Aug 2014 [13:34:21], Paul E. McKenney wrote:
> On Tue, Aug 12, 2014 at 01:48:45AM +0530, Amit Shah wrote:
> > On (Mon) 11 Aug 2014 [13:11:02], Paul E. McKenney wrote:
> > > On Tue, Aug 12, 2014 at 01:11:26AM +0530, Amit Shah wrote:
> > > > On (Mon)
On (Mon) 11 Aug 2014 [15:11:03], H. Peter Anvin wrote:
> On 08/11/2014 11:49 AM, Amit Shah wrote:
> > The khwrngd thread is started when a hwrng device of sufficient
> > quality is registered. The virtio-rng device is backed by the
> > hypervisor, and we trust the hyper
On (Mon) 11 Aug 2014 [13:11:02], Paul E. McKenney wrote:
> On Tue, Aug 12, 2014 at 01:11:26AM +0530, Amit Shah wrote:
> > On (Mon) 11 Aug 2014 [09:28:07], Paul E. McKenney wrote:
> > > On Mon, Aug 11, 2014 at 12:43:08PM +0530, Amit Shah wrote:
> > > > On (Fri)
On (Mon) 11 Aug 2014 [09:28:07], Paul E. McKenney wrote:
> On Mon, Aug 11, 2014 at 12:43:08PM +0530, Amit Shah wrote:
> > On (Fri) 08 Aug 2014 [14:46:48], Paul E. McKenney wrote:
> > > On Fri, Aug 08, 2014 at 02:43:47PM -0700, Paul E. McKenney wrote:
> > > > On S
ss we receive is perfectly trustworthy. Hence,
we use 100% for the factor, indicating maximum confidence in the source.
Signed-off-by: Amit Shah
---
Pretty small and contained patch; would be great if it is picked up for
3.17.
---
drivers/char/hw_random/virtio-rng.c | 1 +
1 file changed, 1 inse
the driver.
Reported-by: Amos Kong
Signed-off-by: Amit Shah
---
drivers/char/hw_random/virtio-rng.c | 7 +++
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/char/hw_random/virtio-rng.c
b/drivers/char/hw_random/virtio-rng.c
index e9b15bc..124cac5 100644
--- a/drivers
On (Fri) 08 Aug 2014 [14:46:27], H. Peter Anvin wrote:
> On 08/08/2014 02:07 AM, Amit Shah wrote:
> >
> >
> >> To
> >> some degree the above is obsolete when we get khwrngd widely deployed,
> >> but that is a new-kernel-only kind of thing.
> >
On (Fri) 08 Aug 2014 [14:46:48], Paul E. McKenney wrote:
> On Fri, Aug 08, 2014 at 02:43:47PM -0700, Paul E. McKenney wrote:
> > On Sat, Aug 09, 2014 at 12:04:24AM +0530, Amit Shah wrote:
> > > On (Fri) 08 Aug 2014 [11:18:35], Paul E. McKenney wrote:
> >
> > [ . .
On (Fri) 08 Aug 2014 [11:18:35], Paul E. McKenney wrote:
> On Fri, Aug 08, 2014 at 11:07:10PM +0530, Amit Shah wrote:
> > On (Fri) 08 Aug 2014 [09:25:02], Paul E. McKenney wrote:
> > > On Fri, Aug 08, 2014 at 02:10:56PM +0530, Amit Shah wrote:
> > > > On Friday
On (Fri) 08 Aug 2014 [09:25:02], Paul E. McKenney wrote:
> On Fri, Aug 08, 2014 at 02:10:56PM +0530, Amit Shah wrote:
> > On Friday 11 July 2014 07:05 PM, Paul E. McKenney wrote:
> > >From: "Paul E. McKenney"
> > >
> > >An 80-CPU system with
On (Thu) 07 Aug 2014 [12:31:11], H. Peter Anvin wrote:
> On 08/07/2014 06:08 AM, Amit Shah wrote:
> > On KVM guests where the virtio-rng device is available, and set as the
> > current rng, this udev rule will start rngd which will feed in the
> > host-provided e
On Friday 11 July 2014 07:05 PM, Paul E. McKenney wrote:
From: "Paul E. McKenney"
An 80-CPU system with a context-switch-heavy workload can require so
many NOCB kthread wakeups that the RCU grace-period kthreads spend several
tens of percent of a CPU just awakening things. This clearly will no
On KVM guests where the virtio-rng device is available, and set as the
current rng, this udev rule will start rngd which will feed in the
host-provided entropy to /dev/random.
Signed-off-by: Amit Shah
---
90-virtio-rng.rules | 1 +
1 file changed, 1 insertion(+)
create mode 100644 90-virtio
not-quite-Signed-off-by: Amit Shah
---
Makefile.am | 1 +
configure.ac | 8
2 files changed, 9 insertions(+)
diff --git a/Makefile.am b/Makefile.am
index f8490a3..a2b8173 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -8,6 +8,7 @@ sbin_PROGRAMS= rngd
bin_PROGRAMS= rngtest
udev
rule in the system dirs. However, installing as non-root will
obviously fail. Prefixes are also not honoured. I don't know of a
better way, and we probably should leave this to distributions.
However, if someone has a better idea on how to expand this, please
suggest.
Amit Shah (2):
On (Mon) 21 Jul 2014 [17:15:51], Amit Shah wrote:
> Instead of calling hwrng_register() in the probe routing, call it in the
> scan routine. This ensures that when hwrng_register() is successful,
> and it requests a few random bytes to seed the kernel's pool at init,
> we're
On (Tue) 22 Jul 2014 [07:46:23], Jason Cooper wrote:
> On Mon, Jul 21, 2014 at 05:15:48PM +0530, Amit Shah wrote:
> > v2:
> > - update patch 3 to store the hwrng_register_done bool per-device
> >rather than global
> > - add patch 2 that re-arranges stru
On (Mon) 21 Jul 2014 [08:11:16], Jason Cooper wrote:
> On Mon, Jul 21, 2014 at 05:15:51PM +0530, Amit Shah wrote:
> > Instead of calling hwrng_register() in the probe routing, call it in the
> > scan routine. This ensures that when hwrng_register() is successful,
> > and it
load and re-load the module, and hope things succeed the
next time around.
Signed-off-by: Amit Shah
---
drivers/char/hw_random/virtio-rng.c | 25 +++--
1 file changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/char/hw_random/virtio-rng.c
b/drivers/char/hw_rando
vdev is unused in struct virtrng_info, remove it.
CC: Amos Kong
Signed-off-by: Amit Shah
---
drivers/char/hw_random/virtio-rng.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/char/hw_random/virtio-rng.c
b/drivers/char/hw_random/virtio-rng.c
index e9b15bc..d8ffebd 100644
--- a
Re-arrange the elements of the virtrng_info struct to pack it better.
Signed-off-by: Amit Shah
---
drivers/char/hw_random/virtio-rng.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/char/hw_random/virtio-rng.c
b/drivers/char/hw_random/virtio-rng.c
index d8ffebd
using the scan routine.
Patch 4 reverts the previous restriction, which no longer applies, to
not send read requests to the host before successful probe.
Patches 1 and 2 are minor cleanups.
Please review and apply,
Amit Shah (4):
virtio: rng: remove unused struct element
virtio: rng: re-ar
yet setup completely.
Signed-off-by: Amit Shah
---
drivers/char/hw_random/core.c | 6 --
drivers/char/hw_random/virtio-rng.c | 9 -
2 files changed, 15 deletions(-)
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index c4419ea..2a451b1 100644
--- a/driv
On (Mon) 21 Jul 2014 [15:01:00], Amit Shah wrote:
> Instead of calling hwrng_register() in the probe routing, call it in the
> scan routine. This ensures that when hwrng_register() is successful,
> and it requests a few random bytes to seed the kernel's pool at init,
> we're
remove the workaround added previously to
check whether probe was completed, and only then ask for data from the
host. The revert follows in the next commit.
Signed-off-by: Amit Shah
---
drivers/char/hw_random/virtio-rng.c | 25 +++--
1 file changed, 15 insertions(+), 10 deletion
yet setup completely.
Signed-off-by: Amit Shah
Conflicts:
drivers/char/hw_random/virtio-rng.c
(Conflict due to change in context around the revert)
---
drivers/char/hw_random/core.c | 6 --
drivers/char/hw_random/virtio-rng.c | 9 -
2 files changed, 15 deletions(-)
d
tch 1 is a minor cleanup.
Please review and apply,
Amit Shah (3):
virtio: rng: remove unused struct element
virtio: rng: delay hwrng_register() till driver is ready
Revert "hwrng: virtio - ensure reads happen after successful probe"
drivers/char/hw_random/core.c | 6 -
vdev is unused in struct virtrng_info, remove it.
CC: Amos Kong
Signed-off-by: Amit Shah
---
drivers/char/hw_random/virtio-rng.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/char/hw_random/virtio-rng.c
b/drivers/char/hw_random/virtio-rng.c
index e9b15bc..d8ffebd 100644
--- a
On (Fri) 18 Jul 2014 [17:14:08], Herbert Xu wrote:
> On Fri, Jul 18, 2014 at 02:26:26PM +0530, Amit Shah wrote:
> >
> > > Sounds like a good idea to me. Though, changes in core.c that
> > > increase the time in hwrng_register() or hwrng_init() may not get
> > >
On (Mon) 14 Jul 2014 [18:12:46], Amit Shah wrote:
> On (Mon) 14 Jul 2014 [08:37:00], Jason Cooper wrote:
> > On Mon, Jul 14, 2014 at 10:05:19AM +0530, Amit Shah wrote:
> > > Some RNG devices may not be ready to give early randomness at probe()
> > > time, and hence los
C: Jani Nikula
CC: David Airlie
CC: # v3.15+
Signed-off-by: Amit Shah
---
drivers/gpu/drm/i915/i915_params.c | 12 ++--
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_params.c
b/drivers/gpu/drm/i915/i915_params.c
index d05a2af..053981d 100644
-
On (Tue) 15 Jul 2014 [12:45:56], Herbert Xu wrote:
> On Tue, Jul 15, 2014 at 10:10:28AM +0530, Amit Shah wrote:
> > On (Mon) 14 Jul 2014 [20:50:06], Herbert Xu wrote:
> > > On Thu, Jul 10, 2014 at 03:42:33PM +0530, Amit Shah wrote:
> > > > v3:
> > > > -
On (Mon) 14 Jul 2014 [20:50:06], Herbert Xu wrote:
> On Thu, Jul 10, 2014 at 03:42:33PM +0530, Amit Shah wrote:
> > v3:
> > - Kees Cook pointed out a weird side-effect: devices which have
> >->init() registered get their randomness added to the system each
> >
On (Mon) 14 Jul 2014 [08:37:00], Jason Cooper wrote:
> On Mon, Jul 14, 2014 at 10:05:19AM +0530, Amit Shah wrote:
> > Some RNG devices may not be ready to give early randomness at probe()
> > time, and hence lose out on the opportunity to contribute to system
> > randomne
previous series gets committed.
Please review,
Amit Shah (3):
hw_random: allow RNG devices to give early randomness after a delay
virtio: rng: only accept delayed early randomness requests
Revert "virtio: rng: ensure reads happen after successful probe"
drivers/ch
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