search for: dcdbas

Use smp_call_on_cpu() to raise SMI on cpu 0. Make call secure by adding get_online_cpus() to avoid e.g. suspend resume cycles in between. Signed-off-by: Juergen Gross <jgross at suse.com> --- V4: add call to get_online_cpus() --- drivers/firmware/dcdbas.c | 51 ++++++++++++++++++++++++----------------------- 1 file changed, 26 insertions(+), 25 deletions(-) diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c index 829eec8..2fe1a13 100644 --- a/drivers/firmware/dcdbas.c +++ b/drivers/firmware/dcdbas.c @@ -23,6 +23,7 @@ #include &lt...

...eekend :-( And same > > prediction is for this weekend and also next one... > > Pali, I've got a Dell laptop (Latitude E6440) here. Would this device be > okay for a test? Hi! Proper regression test should check if this patch does not break any function or drivers dependent on dcdbas.ko. And should be done on both notebook devices: which needs to issue that smm call on cpu 0 and also on which it is not needed. Some notebooks which needs smm call to issued from cpu 0 can be found in git commit messages of i8k, dell-laptop or dcdbas kernel drivers. > What would you do for te...

...eekend :-( And same > > prediction is for this weekend and also next one... > > Pali, I've got a Dell laptop (Latitude E6440) here. Would this device be > okay for a test? Hi! Proper regression test should check if this patch does not break any function or drivers dependent on dcdbas.ko. And should be done on both notebook devices: which needs to issue that smm call on cpu 0 and also on which it is not needed. Some notebooks which needs smm call to issued from cpu 0 can be found in git commit messages of i8k, dell-laptop or dcdbas kernel drivers. > What would you do for te...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V5: - patch 3: rename and reshuffle parameters of smp_call_on_cpu() as requested by Peter Zijlstra - patch 3: test target cpu to be online as requested by Peter Zijlstra - patch 4: less wordy messages as requested by Davi...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V5: - patch 3: rename and reshuffle parameters of smp_call_on_cpu() as requested by Peter Zijlstra - patch 3: test target cpu to be online as requested by Peter Zijlstra - patch 4: less wordy messages as requested by Davi...

...ters (vcpu pinning) limiting the hypervisor in it's scheduling > decisions. > > This patch series is adding a generic function to be able to temporarily > pin a (virtual) cpu to a dedicated physical cpu for executing above > mentioned functions on that specific cpu. The drivers (dcdbas and i8k) > requiring this functionality are modified accordingly. > > Changes in V5: > - patch 3: rename and reshuffle parameters of smp_call_on_cpu() as requested > by Peter Zijlstra > - patch 3: test target cpu to be online as requested by Peter Zijlstra > - patch 4: less...

...tion is for this weekend and also next one... >> >> Pali, I've got a Dell laptop (Latitude E6440) here. Would this device be >> okay for a test? > > Hi! > > Proper regression test should check if this patch does not break any > function or drivers dependent on dcdbas.ko. And should be done on both > notebook devices: which needs to issue that smm call on cpu 0 and also > on which it is not needed. Hmm, couldn't get one which needs smm to be called on cpu 0. OTOH I've done various tests and added a printk() in raise_smm() and i8k_smm_func() issuin...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V2: - instead of manipulating the allowed set of cpus use cpu specific workqueue as requested by Peter Zijlstra - add include/linux/hypervisor.h to hide architecture specific stuff from generic kernel cod Juergen Gros...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V2: - instead of manipulating the allowed set of cpus use cpu specific workqueue as requested by Peter Zijlstra - add include/linux/hypervisor.h to hide architecture specific stuff from generic kernel cod Juergen Gros...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V3: - use get_cpu()/put_cpu() as suggested by David Vrabel Changes in V2: - instead of manipulating the allowed set of cpus use cpu specific workqueue as requested by Peter Zijlstra - add include/linux/hypervisor.h to hi...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V3: - use get_cpu()/put_cpu() as suggested by David Vrabel Changes in V2: - instead of manipulating the allowed set of cpus use cpu specific workqueue as requested by Peter Zijlstra - add include/linux/hypervisor.h to hi...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V6: - rebased to kernel 4.8-rc4 Changes in V5: - patch 3: rename and reshuffle parameters of smp_call_on_cpu() as requested by Peter Zijlstra - patch 3: test target cpu to be online as requested by Peter Zijlstra - patch...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V6: - rebased to kernel 4.8-rc4 Changes in V5: - patch 3: rename and reshuffle parameters of smp_call_on_cpu() as requested by Peter Zijlstra - patch 3: test target cpu to be online as requested by Peter Zijlstra - patch...

On Tuesday 05 April 2016 21:31:52 Pali Roh?r wrote: > On Tuesday 05 April 2016 16:54:14 Guenter Roeck wrote: > > On Tue, Apr 05, 2016 at 07:10:07AM +0200, Juergen Gross wrote: > > > Use the smp_call_on_cpu() function to call system management > > > mode on cpu 0. > > > Make call secure by adding get_online_cpus() to avoid e.g. suspend > > > resume

On Tuesday 05 April 2016 21:31:52 Pali Roh?r wrote: > On Tuesday 05 April 2016 16:54:14 Guenter Roeck wrote: > > On Tue, Apr 05, 2016 at 07:10:07AM +0200, Juergen Gross wrote: > > > Use the smp_call_on_cpu() function to call system management > > > mode on cpu 0. > > > Make call secure by adding get_online_cpus() to avoid e.g. suspend > > > resume

...4 thread_return+0x232/0x79d() (Not tainted) Jan 9 15:44:11 name kernel: Hardware name: Precision WorkStation 490 Jan 9 15:44:11 name kernel: Modules linked in: fuse nfs lockd fscache nfs_acl auth_rpcgss autofs4 sunrpc p4_clockmod freq_table speedstep_lib ipv6 ppdev parport_pc parport sg microcode dcdbas serio_raw i2c_i801 iTCO_wdt iTCO_vendor_support tg3 snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd soundcore snd_page_alloc i5000_edac edac_core i5k_amb shpchp ext4 mbcache jbd2 sd_mod crc_t10dif sr_mod cdrom firewire_ohci firewire_core crc_itu_...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V4: - move patches 5 and 6 further up in the series - patch 2 (was 5): WARN_ONCE in case platform doesn't support pinning as requested by Peter Zijlstra - patch 3 (was 2): change return value in case of illegal cpu as...

...y via special boot parameters (vcpu pinning) limiting the hypervisor in it's scheduling decisions. This patch series is adding a generic function to be able to temporarily pin a (virtual) cpu to a dedicated physical cpu for executing above mentioned functions on that specific cpu. The drivers (dcdbas and i8k) requiring this functionality are modified accordingly. Changes in V4: - move patches 5 and 6 further up in the series - patch 2 (was 5): WARN_ONCE in case platform doesn't support pinning as requested by Peter Zijlstra - patch 3 (was 2): change return value in case of illegal cpu as...

...cpumask_var_t in irq_desc SGI UV cpumask: use static temp cpumask in flush_tlb x86: cleanup remaining cpumask_t code in mce_amd_64.c x86: cleanup remaining cpumask_t code in microcode_core.c x86: reduce stack usage in init_intel_cacheinfo cpumask: use cpumask_var_t in dcdbas.c cpumask: reduce stack usage in find_lowest_rq Xen: reduce memory required for cpu_evtchn_mask Rusty Russell (5): cpumask: Use topology_core_cpumask()/topology_thread_cpumask() cpumask: convert misc driver functions cpumask: convert drivers/net/sfc cpumask: con...

...cpumask_var_t in irq_desc SGI UV cpumask: use static temp cpumask in flush_tlb x86: cleanup remaining cpumask_t code in mce_amd_64.c x86: cleanup remaining cpumask_t code in microcode_core.c x86: reduce stack usage in init_intel_cacheinfo cpumask: use cpumask_var_t in dcdbas.c cpumask: reduce stack usage in find_lowest_rq Xen: reduce memory required for cpu_evtchn_mask Rusty Russell (5): cpumask: Use topology_core_cpumask()/topology_thread_cpumask() cpumask: convert misc driver functions cpumask: convert drivers/net/sfc cpumask: con...