search for: preemptability

As a follow up to https://reviews.llvm.org/D20217 I would like to use lto/thinlto to refine when a symbol is marked as local/preemptable. I'm not very familiar with lto though so would appreciate some guidance about how best to go about this. Regards Sean Fertile

I recently sent off a fix for lazy vmalloc faults which can happen under = paravirt when lazy mode is enabled. Unfortunately, I jumped the gun a = bit on fixing this. I neglected to notice that since the new call to = flush the MMU update queue is called from the page fault handler, it can = be pre-empted. Both VMI and Xen use per-cpu variables to track lazy = mode state, as all previous

I recently sent off a fix for lazy vmalloc faults which can happen under = paravirt when lazy mode is enabled. Unfortunately, I jumped the gun a = bit on fixing this. I neglected to notice that since the new call to = flush the MMU update queue is called from the page fault handler, it can = be pre-empted. Both VMI and Xen use per-cpu variables to track lazy = mode state, as all previous

Hi, when creating a bigger (> 50 GB) HVM guest with maxmem > memory we get softlockups from time to time. kernel: [ 802.084335] BUG: soft lockup - CPU#1 stuck for 22s! [xend:31351] I tracked this down to the call of xc_domain_set_pod_target() and further p2m_pod_set_mem_target(). Unfortunately I can this check only with xen-4.2.2 as I don''t have a machine with enough memory for

> On Feb 25, 2016, at 11:41 AM, James Y Knight via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > While we're talking about this, I'd just mention again that the same issue arises for *normal* functions too, when linked into a shared library: > int foo() { return 1; } > int bar() { return foo(); } > > Now, compare: > clang -fPIC -O1 -S -o - test.c

Someone recently posted on the x2go list that he had a problem with jerky videos playing remotely on Ubuntu, but solved it by installing a low latency kernel that was available as an alternative. That made me curious as to whether CentOS has an equivalent - or a way to build something similar. -- Les Mikesell lesmikesell at gmail.com

While we're talking about this, I'd just mention again that the same issue arises for *normal* functions too, when linked into a shared library: int foo() { return 1; } int bar() { return foo(); } Now, compare: clang -fPIC -O1 -S -o - test.c gcc -fPIC -O1 -S -o - test.c GCC will refuse to inline foo into bar, or use any information about foo in compiling bar, because foo is

Ok here is a real geek question, I building my own linux kernel for my asterisk system and came across the kernel setting for the timer frequency. I have one of 3 hardcode choices 100Hz, 250 Hz and 1000Hz. From what I understand the default Freq was changed from 100Hz in kernel 2.4 to 1000Hz (1KHz) in kernel 2.6. Timing is a BIG issue in asterisk with all the TDM and zap channel stuff.

Hi, This patch series is an update of my previous paravirt_ops patches. They are loosely based on Ingo's original paravirt_ops implementation for KVM. Some of the changes since the last series include: 1) Switch to using CPUID 0x40000000 instead of using MSR writes to discover shared memory area 2) Attempt to deal with SMP guests 3) Support for generic CR read caching 4) Support for

Hi, This patch series is an update of my previous paravirt_ops patches. They are loosely based on Ingo's original paravirt_ops implementation for KVM. Some of the changes since the last series include: 1) Switch to using CPUID 0x40000000 instead of using MSR writes to discover shared memory area 2) Attempt to deal with SMP guests 3) Support for generic CR read caching 4) Support for

On Wed, 16 Apr 2008 13:46:09 +0200 Ingo Molnar <mingo at elte.hu> wrote: > > * Pekka Paalanen <pq at iki.fi> wrote: > > > > we should fix this restriction ASAP. Forcibly dropping to UP will > > > cause mmiotrace to be much less useful for diagnostic purposes of > > > Linux > > > > Ok, how do you propose we solve this? > >

Helo, I have problem with Digium TE110P connected to CISCO 3640 (port on NM-HDV-2E1-60) wth PRI E1 link. I use CISCO now for testing but when I tried with real PBX problem was exactly same. I have this messages in Asterisk conole and log sometimes: NOTICE[1115] chan_zap.c: PRI got event: HDLC Abort (6) on Primary D-channel of span 1 Usually 2-5 such messages in series, can be repeated after 10

Hi all, This is something that came up in the "RFC: Add guard intrinsics to LLVM" thread; and while I'm not exactly blocked on this, figuring out a path forward here will be helpful in deciding if we can use the available_externally linkage type to expression certain semantic properties guard intrinsics will have. Let's start with an example that shows that we have a problem

Accepted: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Format: 1.8 Date: Fri, 05 Oct 2018 19:38:52 +0100 Source: xen Binary: xenstore-utils xen-utils-common xen-hypervisor-common xen-doc xen-utils-4.11 xen-hypervisor-4.11-amd64 xen-system-amd64 xen-hypervisor-4.11-arm64 xen-system-arm64 xen-hypervisor-4.11-armhf xen-system-armhf libxen-dev libxenmisc4.11 libxencall1 libxendevicemodel1

On Sun, Nov 07 2010 at 6:05pm -0500, Andi Kleen <andi@firstfloor.org> wrote: > On Sun, Nov 07, 2010 at 10:39:23PM +0100, Milan Broz wrote: > > On 11/07/2010 08:45 PM, Andi Kleen wrote: > > >> I read about barrier-problems and data getting to the partition when > > >> using dm-crypt and several layers so I don''t know if that could be > >

A character device for accessing (in user-space) pages that have been granted by other domains. Signed-off-by: Derek Murray <Derek.Murray@cl.cam.ac.uk> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel