On Sat, Jul 4, 2020 at 12:44 AM Pavel Machek wrote:
> > Cryptographic libraries carry pseudo random number generators to
> > quickly provide randomness when needed. If such a random pool gets
> > cloned, secrets may get revealed, as the same random number may get
> > used multiple times. For fork,
On Sat, Jul 4, 2020 at 12:34 AM Pavel Machek wrote:
> On Fri 2020-07-03 15:29:22, Jann Horn wrote:
> > On Fri, Jul 3, 2020 at 1:30 PM Michal Hocko wrote:
> > > On Fri 03-07-20 10:34:09, Catangiu, Adrian Costin wrote:
> > > > This patch adds logic to the kernel power code to zero out contents of
>
Hi!
> Cryptographic libraries carry pseudo random number generators to
> quickly provide randomness when needed. If such a random pool gets
> cloned, secrets may get revealed, as the same random number may get
> used multiple times. For fork, this was fixed using the WIPEONFORK
> madvise flag [1].
On Fri 2020-07-03 14:17:50, Rafael J. Wysocki wrote:
> On Fri, Jul 3, 2020 at 1:30 PM Michal Hocko wrote:
> >
> > On Fri 03-07-20 10:34:09, Catangiu, Adrian Costin wrote:
> > > This patch adds logic to the kernel power code to zero out contents of
> > > all MADV_WIPEONSUSPEND VMAs present in the s
On Fri 2020-07-03 15:29:22, Jann Horn wrote:
> On Fri, Jul 3, 2020 at 1:30 PM Michal Hocko wrote:
> > On Fri 03-07-20 10:34:09, Catangiu, Adrian Costin wrote:
> > > This patch adds logic to the kernel power code to zero out contents of
> > > all MADV_WIPEONSUSPEND VMAs present in the system during
On Fri, Jul 3, 2020 at 1:30 PM Michal Hocko wrote:
> On Fri 03-07-20 10:34:09, Catangiu, Adrian Costin wrote:
> > This patch adds logic to the kernel power code to zero out contents of
> > all MADV_WIPEONSUSPEND VMAs present in the system during its transition
> > to any suspend state equal or gre
On Fri, Jul 3, 2020 at 1:30 PM Michal Hocko wrote:
>
> On Fri 03-07-20 10:34:09, Catangiu, Adrian Costin wrote:
> > This patch adds logic to the kernel power code to zero out contents of
> > all MADV_WIPEONSUSPEND VMAs present in the system during its transition
> > to any suspend state equal or g
On Fri 03-07-20 10:34:09, Catangiu, Adrian Costin wrote:
> This patch adds logic to the kernel power code to zero out contents of
> all MADV_WIPEONSUSPEND VMAs present in the system during its transition
> to any suspend state equal or greater/deeper than Suspend-to-memory,
> known as S3.
How does
On Fri, Jul 3, 2020 at 12:34 PM Catangiu, Adrian Costin
wrote:
> Cryptographic libraries carry pseudo random number generators to
> quickly provide randomness when needed. If such a random pool gets
> cloned, secrets may get revealed, as the same random number may get
> used multiple times. For fo
Nicholas Piggin writes:
> Excerpts from Will Deacon's message of July 2, 2020 8:35 pm:
>> On Thu, Jul 02, 2020 at 08:25:43PM +1000, Nicholas Piggin wrote:
>>> Excerpts from Will Deacon's message of July 2, 2020 6:02 pm:
>>> > On Thu, Jul 02, 2020 at 05:48:36PM +1000, Nicholas Piggin wrote:
>>> >>
This brings the behaviour of the uncontended fast path back to
roughly equivalent to simple spinlocks -- a single atomic op with
lock hint.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/atomic.h| 28
arch/powerpc/include/asm/qspinlock.h | 2 +-
2 f
v2 is updated to account for feedback from Will, Peter, and
Waiman (thank you), and trims off a couple of RFC and unrelated
patches.
Thanks,
Nick
Nicholas Piggin (6):
powerpc/powernv: must include hvcall.h to get PAPR defines
powerpc/pseries: move some PAPR paravirt functions to their own fil
To prepare for queued spinlocks. This is a simple rename except to update
preprocessor guard name and a file reference.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/simple_spinlock.h| 292 ++
.../include/asm/simple_spinlock_types.h | 21 ++
arch/powerpc/
An include goes away in future patches which breaks compilation
without this.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/platforms/powernv/pci-ioda-tce.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda-tce.c
b/arch/powerpc/platforms/powernv/pci-i
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/paravirt.h | 61 +
arch/powerpc/include/asm/spinlock.h | 24 +---
arch/powerpc/lib/locks.c| 12 +++---
3 files changed, 68 insertions(+), 29 deletions(-)
create mode 100644 arch/powerpc/in
These have shown significantly improved performance and fairness when
spinlock contention is moderate to high on very large systems.
[ Numbers hopefully forthcoming after more testing, but initial
results look good ]
Thanks to the fast path, single threaded performance is not noticably
hurt.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/paravirt.h | 28 ++
arch/powerpc/include/asm/qspinlock.h | 55 +++
arch/powerpc/include/asm/qspinlock_paravirt.h | 5 ++
arch/powerpc/platforms/pseries/Kconfig| 5 ++
arch/powerpc/plat
On 2020/7/2 下午9:35, Kishon Vijay Abraham I wrote:
Hi Jason,
On 7/2/2020 3:40 PM, Jason Wang wrote:
On 2020/7/2 下午5:51, Michael S. Tsirkin wrote:
On Thu, Jul 02, 2020 at 01:51:21PM +0530, Kishon Vijay Abraham I wrote:
This series enhances Linux Vhost support to enable SoC-to-SoC
communication
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