Kernel

Linux with kvm-intel locks up VMplayer guest is started
Hi Martin, This lockup is fixed in the latest dot releases of Workstation, Player, and Server. The vmmon module now checks if VT is already enabled (actually it just tests if CR4.VMXE is set since checking if the cpu is in VMX mode is a pain). The vmmon module enables VMX mode when world switching to our ... 19 Jun 2008 01:20

[git patches] libata fixes
Please pull from 'upstream-linus' branch of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev.git upstream-linus to receive the following updates: drivers/ata/Kconfig | 10 +++++++++- drivers/ata/ahci.c | 23 ++++++++++++++++++++--- drivers/ata/ata_piix.c | 7 +++++++ dr... 19 Jun 2008 01:20

[AGP] intel_agp: Add support for Intel 4 series chipsets
On 2008.06.18 15:34:07 +0800, Zhenyu Wang wrote: Thanks, updated as below with typo and indent fix. [AGP] intel_agp: Add support for Intel 4 series chipsets I believe now that this one might be better to be split, as it does contain a fix on IGD_GM chipset for extra stolen memory size available, and ... 19 Jun 2008 01:20

cgroup: support checking of subsystem dependencies
>> static int cgroup_remount(struct super_block *sb, int *flags, char *data) { int ret = 0; @@ -852,6 +871,10 @@ static int cgroup_remount(struct super_block *sb, int *flags, char *data) if (ret) goto out_unlock; + ret = check_subsys_dependency(opts.subsy... 19 Jun 2008 01:20

Make rcutorture more vicious: reinstate boot-time testing
Paul E. McKenney wrote: Hello again! This patch re-institutes the ability to build rcutorture directly into the Linux kernel. The reason that this capability was removed was that this could result in your kernel being pretty much useless, as rcutorture would be running starting from early boot. Thi... 20 Jun 2008 02:01

[RFC/PATCH 1/3] sched: support arch override of sched_group cpu power
Add a new sched domain flag, SD_ASYM_CPU_POWER, which signifies that the architecture may override the cpu power for a cpu via a hook in init_sched_groups_power(). Add a dummy definition of arch_cpu_power() which conforms with the existing behavior. Signed-off-by: Nathan Lynch <ntl(a)pobox.com> --- include/linu... 19 Jun 2008 01:20

[RFC/PATCH 0/3] sched: allow arch override of cpu power
There is an "interesting" quality of POWER6 cores, which each have 2 hardware threads: assuming one thread on the core is idle, the primary thread is a little "faster" than the secondary thread. To illustrate: for cpumask in 0x1 0x2 ; do taskset $cpumask /usr/bin/time -f "%e elapsed, %U user, %S sys" \ ... 19 Jun 2008 01:20

mm: add a ptep_modify_prot transaction abstraction
Linus Torvalds wrote: On Wed, 18 Jun 2008, Jeremy Fitzhardinge wrote: Along the lines of: Hell no. There's a reason we have a special set_wrprotect() thing. We can do it more efficiently on native hardware by just clearing the bit atomically. No need to do the cmpxchg games. ... 20 Jun 2008 17:24

Don't calculate vm_total_pages twice when rebuild zonelists in online_pages()
If zonelist is required to be rebuilt in online_pages(), there is no need to recalculate vm_total_pages in that function, as it has been updated in the call build_all_zonelists(). Signed-off-by: Kent Liu <kent.liu(a)linux.intel.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu(a)jp.fujitsu.com> --- mm/memory_ho... 19 Jun 2008 01:20

[RFC/PATCH 3/3] adjust cpu power for secondary threads on POWER6
On POWER6 processors, cpu-bound programs generally perform better on the primary thread when the secondary thread is idle than they do on the secondary thread while the primary thread is idle. This difference can be observed by timing a simple shell loop: for cpumask in 0x1 0x2 ; do taskset $cpumask /usr/bin/t... 19 Jun 2008 01:20