search for: cpus

struct cpufreq_policy, including a cpumask_t member, gets copied in cpufreq_limit_change(), cpufreq_add_cpu(), set_cpufreq_gov(), and set_cpufreq_para(). Make the member a cpumask_var_t, thus reducing the amount of data needing copying (particularly with large NR_CPUS). Signed-off-by: Jan Beulich <jbeulich@suse.com> --- 2011-09-20.orig/xen/arch/x86/acpi/cpufreq/cpufreq.c 2011-10-12 08:35:12.000000000 +0200 +++ 2011-09-20/xen/arch/x86/acpi/cpufreq/cpufreq.c 2011-10-14 14:55:07.000000000 +0200 @@ -446,7 +446,7 @@ static int acpi_cpufreq_target(struct cp...

Currently cpufreq and xenpm are out of sync. Fix cpufreq reporting of if turbo mode is enabled or not. Fix xenpm to not decode for tristate, but a boolean. Signed-off-by: Jacob Shin <jacob.shin@amd.com> --- tools/misc/xenpm.c | 14 +++----------- xen/drivers/cpufreq/utility.c | 2 +- 2 files changed, 4 insertions(+), 12 deletions(-) diff --git a/tools/misc/xenpm.c

The unstable tree now includes support for SMP guests, i.e. domains which run on multiple cpus. SMP guests can use between 1 and 32 virtual cpus, even if the machine has fewer physical cpus. The code is highly experimental and performance will improve over time. To use SMP guests: - enable option CONFIG_SMP in the Linux 2.6 kernel config - dom0 will boot with upto the number of physical cp...

Hello, i have just migrated machine to xen server where only 2 cpus are available. I have copied config from machine where domU was located before. That machine had 4 CPUS (QUADCORE), current machine has 2 CPUS (1 XEON 2cores). I have forgot to change vcpus from 4 to 2 in config, but .. what really surprised me ... machine started . How it is possible? It was real...

Can find documented how many CPUS can Xen support and how many Virtual Machines per CPU are allowed? Can someone please supply this info? -- View this message in context: http://www.nabble.com/Supported--of-CPUs-VMs-per-CPUs-tf2278842.html#a6329630 Sent from the Xen - Dev forum at Nabble.com. _________________________________...

...r the documentation to: <vcpu placement='auto'>2</vcpu> <numatune> <memory tune='strict' placement='auto'/> </numatune> However, the VMs won't start and the system is no low on memory. # numactl --hardware available: 8 nodes (0-7) node 0 cpus: 0 4 8 12 16 20 24 28 node 0 size: 16374 MB node 0 free: 11899 MB node 1 cpus: 32 36 40 44 48 52 56 60 node 1 size: 16384 MB node 1 free: 15318 MB node 2 cpus: 2 6 10 14 18 22 26 30 node 2 size: 16384 MB node 2 free: 15766 MB node 3 cpus: 34 38 42 46 50 54 58 62 node 3 size: 16384 MB node 3 free: 1...

Hi This patch fixes code generation bug - 586-class CPUs don't support the nopl instruction and some 686-class CPUs don't support it too. I created bug 17792 for that. BTW. I think you should also optimize padding on these CPUs - instead of a stream of 0x90 nops, you should generate variants of "lea (%esi), %esi" instruction like g...

...sk() ) and online mask (as retrieved by cpupool_scheduler_cpumask() ) having an empty intersection. Therefore, when attempting a node-affinity load balancing step and running this: ... /* Pick an online CPU from the proper affinity mask */ csched_balance_cpumask(vc, balance_step, &cpus); cpumask_and(&cpus, &cpus, online); ... we end up with an empty cpumask (in cpus). At this point, in the following code: .... /* If present, prefer vc''s current processor */ cpu = cpumask_test_cpu(vc->processor, &cpus) ? vc->processor...

...c struct call_data_struct *call_data; -static void __smp_call_function(void (*func) (void *info), void *info, - int nonatomic, int wait) + +static int __smp_call_function_mask(cpumask_t mask, + void (*func)(void *), void *info, + int wait) { struct call_data_struct data; - int cpus = num_online_cpus() - 1; + cpumask_t allbutself; + int cpus; + + /* Can deadlock when called with interrupts disabled */ + WARN_ON(irqs_disabled()); + + allbutself = cpu_online_map; + cpu_clear(smp_processor_id(), allbutself); + + cpus_and(mask, mask, allbutself); + cpus = cpus_weight(mask); if...

...c struct call_data_struct *call_data; -static void __smp_call_function(void (*func) (void *info), void *info, - int nonatomic, int wait) + +static int __smp_call_function_mask(cpumask_t mask, + void (*func)(void *), void *info, + int wait) { struct call_data_struct data; - int cpus = num_online_cpus() - 1; + cpumask_t allbutself; + int cpus; + + /* Can deadlock when called with interrupts disabled */ + WARN_ON(irqs_disabled()); + + allbutself = cpu_online_map; + cpu_clear(smp_processor_id(), allbutself); + + cpus_and(mask, mask, allbutself); + cpus = cpus_weight(mask); if...

...cess to the usb-ip-kvm-keyboard. What I tried: - thousands of BIOS IRQ/PnP parameters => no luck - noacpi => kernel panic - irq=biosirq => no change Any more idea to get the IRQ with acpi=off parameter set? Best Regards Werner complete dmesg: [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 2.6.32-5-xen-amd64 (Debian 2.6.32-44) (dannf@debian.org) (gcc version 4.3.5 (Debian 4.3.5-4) ) #1 SMP Sat May 5 04:18:09 UTC 2012 [ 0.000000] Command line: placeholder root=UUID=8622e268-8845-4cd5-82b3-e7fd0568c602 r...

Hi, I can''t get rid of an annoying domU machines hanging issue with Hyperthreading enabled in my BIOS. Hardware config: IBM x325 series 2 * CPUs Intel Xeon 3.06 Ghz Xen version: 3.0.0 Kernel version: 2.6.12.6 Linux distrib: Debian Sarge 3.1 r1 I run 1 domU machine on my dom0, here is my Xen config: . xen0: /etc/xen/xend-config.sxp : (dom0-num-cpus 0) . xenU: /etc/xen/myxenU.cfg : vcpus = 2 - First case: . BIOS Hyp...

With GPLPV under 2.6.30, GPLPV gets the following from the ring: ring slot n (first buffer): status (length) = 54 bytes offset = 0 flags = NETRXF_extra_info (possibly csum too but not relevant) ring slot n + 1 (extra info) gso.size (mss) = 1460 Because NETRXF_extra_info is not set, that''s all I get for that packet. In the IP header though, the total length is 1544 (which in itself

With GPLPV under 2.6.30, GPLPV gets the following from the ring: ring slot n (first buffer): status (length) = 54 bytes offset = 0 flags = NETRXF_extra_info (possibly csum too but not relevant) ring slot n + 1 (extra info) gso.size (mss) = 1460 Because NETRXF_extra_info is not set, that''s all I get for that packet. In the IP header though, the total length is 1544 (which in itself

Hi, I would like to add host feature detection for Qualcomm CPUs. The implementation models the feature detection for ARM CPUs. Is this OK to commit? Thanks, Tobi -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20130610/caeabd25/attachment.html> -------------- next part...

Please include a testcase with the patch. gas uses " nopl 0x0(%eax)" for k6_2. Are you sure it is a gas bug? On 3 November 2013 13:50, Mikulas Patocka <mikulas at artax.karlin.mff.cuni.cz> wrote: > Hi > > This patch fixes code generation bug - 586-class CPUs don't support the > nopl instruction and some 686-class CPUs don't support it too. > > I created bug 17792 for that. > > > BTW. I think you should also optimize padding on these CPUs - instead of a > stream of 0x90 nops, you should generate variants of "lea (%esi),...

hi everybody a qemu-kvm guest gets 16 cpus and Windows in "Device Manager" sees all sixteeen but "Task Manager" shows only 4, the same "System" properties say "(4 processors)" I'd like to learn a bit about this - is it some sort of "resources management" on the libvirt/qemu causing t...

Hello all, I'm trying to setup a NUMA topology identical as the machine which hosts the qemu-kvm VirtualMachine. numactl -H on the host: available: 8 nodes (0-7) node 0 cpus: 0 1 2 3 4 5 node 0 size: 8189 MB node 0 free: 7581 MB node 1 cpus: 6 7 8 9 10 11 node 1 size: 8192 MB node 1 free: 7061 MB node 2 cpus: 12 13 14 15 16 17 node 2 size: 8192 MB node 2 free: 6644 MB node 3 cpus: 18 19 20 21 22 23 node 3 size: 8192 MB node 3 free: 7747 MB node 4 cpus: 24 25 26 27 28 2...

This may not be the best place to ask, but I was prompted by a question about guest cores on KVM. We currently use VMWare Server (v1.0) on CentOS5. It supports up to two virtual CPUs, but not very well, as I understand it. VMWare Server 2.0 might do better at supporting the same maximum of 2 CPUs, but if my research is correct, they both use what is called "strict co-scheduling". Which means, if a two virtual-CPU VM is waiting for a time slice on the physical host, t...

...hyperv/mmu.c b/arch/x86/hyperv/mmu.c index e65d7fe6489f..1177f863e4cd 100644 --- a/arch/x86/hyperv/mmu.c +++ b/arch/x86/hyperv/mmu.c @@ -50,8 +50,8 @@ static inline int fill_gva_list(u64 gva_list[], int offset, return gva_n - offset; } -static void hyperv_flush_tlb_others(const struct cpumask *cpus, - const struct flush_tlb_info *info) +static void hyperv_flush_tlb_multi(const struct cpumask *cpus, + const struct flush_tlb_info *info) { int cpu, vcpu, gva_n, max_gvas; struct hv_tlb_flush **flush_pcpu; @@ -59,7 +59,7 @@ static void hyperv_flush_tlb_others(const struct cpumask...