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2008-09-09[ARM] 5224/2: PXA SSP: Introduce register accessorsMark Brown
Introduce accessors for the SSP registers so that drivers don't need to open code offsets from the MMIO base. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-09[I2C] pxa: provide late suspend and early resume hooksRussell King
Properly hook the I2C driver into the PM code; the previous fix for this (ece5f7b3c4fde70a1ae4add7372ebca5c90bc34d) worked around the platform where I2C is required to be available early during resume. It has been found to be sufficient to use the early resume hook for this function, so the original hack can die. Leave the hack in place for the PIO transfer handler though. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-09[ARM] 5203/1: i2c-pxa: fix scheduling while atomic in i2c_pxa_abort()Dmitry Baryshkov
i2c_pxa_abort can be called from the atomic context. Change it to use mdelay and counted loop. Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-09[ARM] 5201/1: PXA3xx: Add support for power i2c busMike Rapoport
Add power I2C support for PXA3xx processors Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-01[ARM] 5233/1: Allow PXA to have ISA IRQs numbered 0-15Marc Zyngier
Allow PXA IRQs to be numbered starting at 16, leaving 0 to 15 for the ISA IRQs, if needed. This patch depends on RMK's PXA_HAVE_BOARD_IRQS patch. Signed-off-by: Marc Zyngier <marc.zyngier@altran.com> Acked-by: Russel King <linux@arm.linux.org.uk> Acked-by: Eric Miao <eric.y.miao@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-01[ARM] pxa: introduce PXA_HAVE_BOARD_IRQSRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: bnx2x: Version update bnx2x: Multi Queue bnx2x: NAPI and interrupts enable/disable bnx2x: NIC load failure cleanup bnx2x: Initialization structure bnx2x: HW lock timeout bnx2x: Minimize lock time bnx2x: Fan failure mechanism on additional design bnx2x: Rx work check ipv6: sysctl fixes ipv4: sysctl fixes sctp: add verification checks to SCTP_AUTH_KEY option
2008-08-25ALSA: fix for CA0106 on MSI K8N Diamond PLUS MotherboardStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-25bnx2x: Version updateEilon Greenstein
Version update Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: Multi QueueYitchak Gertner
The multi queue support is still disabled by default for the bnx2x (needs some more testing and validation), but there are 2 obvious bug in it which are fixed in this patch Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: NAPI and interrupts enable/disableYitchak Gertner
Fixing the order of enabling and disabling NAPI and the interrupts Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: NIC load failure cleanupYitchak Gertner
Load failures were not handled correctly Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: Initialization structureYitchak Gertner
The TPA initialization is part of the FW internal memory initialization and so it is moved to the appropriate function Signed-off-by: Yitchak Gertner <gertner@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: HW lock timeoutEilon Greenstein
Increasing the lock timeout to 5 seconds instead of 1 second to minimize the chance of failures due to timeout Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: Minimize lock timeEilon Greenstein
After iSCSI boot, the HW lock should only protect the flag so only the first function will reset the chip and not then entire chip reset process Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: Fan failure mechanism on additional designEilon Greenstein
The A1021G board is also using the fan failure mechanism in the same way the A1022G board does Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25bnx2x: Rx work checkEilon Greenstein
The has Rx work check was wrong: when the FW was at the end of the page, the driver was already at the beginning of the next page. Since the check only validated that both driver and FW are pointing to the same place, it concluded that there is still work to be done. This caused some serious issues including long latency results on ping-pong test and lockups while unloading the driver in that condition. Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25ipv6: sysctl fixesAl Viro
Braino: net.ipv6 in ipv6 skeleton has no business in rotable class Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25ipv4: sysctl fixesAl Viro
net.ipv4.neigh should be a part of skeleton to avoid ordering problems Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25sctp: add verification checks to SCTP_AUTH_KEY optionVlad Yasevich
The structure used for SCTP_AUTH_KEY option contains a length that needs to be verfied to prevent buffer overflow conditions. Spoted by Eugene Teo <eteo@redhat.com>. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-25[x86] Clean up MAXSMP Kconfig, and limit NR_CPUS to 512Linus Torvalds
This fixes a regression that was indirectly caused by commit 1184dc2ffe2c8fb9afb766d870850f2c3165ef25 ("x86: modify Kconfig to allow up to 4096 cpus"). Allowing 4k CPU's is not practical at this time, because we still have a number of places that have several 'cpumask_t's on the stack, and a 4k-bit cpumask is 512 bytes of stack-space for each such variable. This literally caused functions like 'smp_call_function_mask' to have a 2.5kB stack frame, and several functions to have 2kB stackframes. With an 8kB stack total, smashing the stack was simply much too likely. At least bugzilla entry http://bugzilla.kernel.org/show_bug.cgi?id=11342 was due to this. The earlier commit to not inline load_module() into sys_init_module() fixed the particular symptoms of this that Alan Brunelle saw in that bugzilla entry, but the huge stack waste by cpumask_t's was the more direct cause. Some day we'll have allocation helpers that allocate large CPU masks dynamically, but in the meantime we simply cannot allow cpumasks this large. Cc: Alan D. Brunelle <Alan.Brunelle@hp.com> Cc: Mike Travis <travis@sgi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-25Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rtc: fix deadlock
2008-08-25Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: add X86_FEATURE_XMM4_2 definitions x86: fix cpufreq + sched_clock() regression x86: fix HPET regression in 2.6.26 versus 2.6.25, check hpet against BAR, v3 x86: do not enable TSC notifier if we don't need it x86 MCE: Fix CPU hotplug problem with multiple multicore AMD CPUs x86: fix: make PCI ECS for AMD CPUs hotplug capable x86: fix: do not run code in amd_bus.c on non-AMD CPUs
2008-08-25Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched_clock: fix cpu_clock()
2008-08-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: fix reference leak in pci_get_dev_by_id() PCI: shpchp: Rename duplicate slot name N as N-1, N-2, N-M... PCI: pciehp: Rename duplicate slot name N as N-1, N-2, N-M...
2008-08-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: ASoC: Fix double free and memory leak in many codec drivers ALSA: CA0106 on MSI K8N Diamond PLUS Motherboard
2008-08-25Merge branch 'kvm-updates-2.6.27' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: fix userspace ABI breakage KVM: MMU: Fix torn shadow pte KVM: Use .fixup instead of .text.fixup on __kvm_handle_fault_on_reboot
2008-08-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: update commentry stop_machine: Remove deprecated stop_machine_run stop_machine: wean Xen off stop_machine_run virtio_balloon: fix towards_target when deflating balloon
2008-08-25[module] Don't let gcc inline load_module()Linus Torvalds
'load_module()' is a complex function that contains all the ELF section logic, and inlining it is utterly insane. But gcc will do it, simply because there is only one call-site. As a result, all the stack space that is allocated for all the work to load the module will still be active when we actually call the module init sequence, and the deep call chain makes stack overflows happen. And stack overflows are really hard to debug, because they not only corrupt random pages below the stack, but also corrupt the thread_info structure that is allocated under the stack. In this case, Alan Brunelle reported some crazy oopses at bootup, after loading the processor module that ends up doing complex ACPI stuff and has quite a deep callchain. This should fix it, and is the sane thing to do regardless. Cc: Alan D. Brunelle <Alan.Brunelle@hp.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-25sched_clock: fix cpu_clock()Peter Zijlstra
This patch fixes 3 issues: a) it removes the dependency on jiffies, because jiffies are incremented by a single CPU, and the tick is not synchronized between CPUs. Therefore relying on it to calculate a window to clip whacky TSC values doesn't work as it can drift around. So instead use [GTOD, GTOD+TICK_NSEC) as the window. b) __update_sched_clock() did (roughly speaking): delta = sched_clock() - scd->tick_raw; clock += delta; Which gives exponential growth, instead of linear. c) allows the sched_clock_cpu() value to warp the u64 without breaking. the results are more reliable sched_clock() deltas: before after sched_clock cpu_clock: 15750 51312 51488 cpu_clock: 59719 51052 50947 cpu_clock: 15879 51249 51061 cpu_clock: 1 50933 51198 cpu_clock: 1 50931 51039 cpu_clock: 1 51093 50981 cpu_clock: 1 51043 51040 cpu_clock: 1 50959 50938 cpu_clock: 1 50981 51011 cpu_clock: 1 51364 51212 cpu_clock: 1 51219 51273 cpu_clock: 1 51389 51048 cpu_clock: 1 51285 51611 cpu_clock: 1 50964 51137 cpu_clock: 1 50973 50968 cpu_clock: 1 50967 50972 cpu_clock: 1 58910 58485 cpu_clock: 1 51082 51025 cpu_clock: 1 50957 50958 cpu_clock: 1 50958 50957 cpu_clock: 1006128 51128 50971 cpu_clock: 1 51107 51155 cpu_clock: 1 51371 51081 cpu_clock: 1 51104 51365 cpu_clock: 1 51363 51309 cpu_clock: 1 51107 51160 cpu_clock: 1 51139 51100 cpu_clock: 1 51216 51136 cpu_clock: 1 51207 51215 cpu_clock: 1 51087 51263 cpu_clock: 1 51249 51177 cpu_clock: 1 51519 51412 cpu_clock: 1 51416 51255 cpu_clock: 1 51591 51594 cpu_clock: 1 50966 51374 cpu_clock: 1 50966 50966 cpu_clock: 1 51291 50948 cpu_clock: 1 50973 50867 cpu_clock: 1 50970 50970 cpu_clock: 998306 50970 50971 cpu_clock: 1 50971 50970 cpu_clock: 1 50970 50970 cpu_clock: 1 50971 50971 cpu_clock: 1 50970 50970 cpu_clock: 1 51351 50970 cpu_clock: 1 50970 51352 cpu_clock: 1 50971 50970 cpu_clock: 1 50970 50970 cpu_clock: 1 51321 50971 cpu_clock: 1 50974 51324 Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-25x86: add X86_FEATURE_XMM4_2 definitionsAustin Zhang
Added Intel processor SSE4.2 feature flag. No in-tree user at the moment, but makes the tree-merging life easier for the crypto tree. Signed-off-by: Austin Zhang <austin.zhang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-25KVM: fix userspace ABI breakageAdrian Bunk
The following part of commit 9ef621d3be56e1188300476a8102ff54f7b6793f (KVM: Support mixed endian machines) changed on the size of a struct that is exported to userspace: include/linux/kvm.h: @@ -318,14 +318,14 @@ struct kvm_trace_rec { __u32 vcpu_id; union { struct { - __u32 cycle_lo, cycle_hi; + __u64 cycle_u64; __u32 extra_u32[KVM_TRC_EXTRA_MAX]; } cycle; struct { __u32 extra_u32[KVM_TRC_EXTRA_MAX]; } nocycle; } u; -}; +} __attribute__((packed)); Packing a struct was the correct idea, but it packed the wrong struct. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-08-25KVM: MMU: Fix torn shadow pteAvi Kivity
The shadow code assigns a pte directly in one place, which is nonatomic on i386 can can cause random memory references. Fix by using an atomic setter. Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-08-25KVM: Use .fixup instead of .text.fixup on __kvm_handle_fault_on_rebootEduardo Habkost
vmlinux.lds expects the fixup code to be on a section named .fixup. The .text.fixup section is not mentioned on vmlinux.lds, and is included on the resulting vmlinux (just after .text) only because of ld heuristics on placing orphan sections. However, placing .text.fixup outside .text breaks the definition of _etext, making it exclude the .text.fixup contents. That makes .text.fixup be ignored by the kernel initialization code that needs to know about section locations, such as the code setting page protection bits. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-08-26lguest: update commentryRusty Russell
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-08-26stop_machine: Remove deprecated stop_machine_runRusty Russell
Everyone should be using stop_machine() now. The staged API transition helped life in linux-next. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-08-26stop_machine: wean Xen off stop_machine_runRusty Russell
This is the last use of (the deprecated) stop_machine_run in the tree. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2008-08-26virtio_balloon: fix towards_target when deflating balloonAnthony Liguori
Both v and vb->num_pages are u32 and unsigned int respectively. If v is less than vb->num_pages (and it is, when deflating the balloon), the result is a very large 32-bit number. Since we're returning a s64, instead of getting the same negative number we desire, we get a very large positive number. This handles the case where v < vb->num_pages and ensures we get a small, negative, s64 as the result. Rusty: please push this for 2.6.27-rc4. It's probably appropriate for the stable tree too as it will cause an unexpected OOM when ballooning. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (simplified)
2008-08-25x86: fix cpufreq + sched_clock() regressionPeter Zijlstra
I noticed that my sched_clock() was slow on a number of machine, so I started looking at cpufreq. The below seems to fix the problem for me. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-25Merge branch 'linus' into x86/urgentIngo Molnar
2008-08-25ALSA: ASoC: Fix double free and memory leak in many codec driversJean Delvare
Many SoC audio codec drivers have improper freeing of memory in error paths. * codec is allocated in the platform device probe function, but is not freed there in case of error. Instead it is freed in the i2c device probe function's error path. However the success or failure of both functions is not linked, so this could result in a double free (if the platform device is successfully probed, the i2c device probing fails and then the platform driver is unregistered.) * codec->private_data is allocated in many platform device probe functions but not freed in their error paths. This patch hopefully solves all these problems. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-08-25x86: fix HPET regression in 2.6.26 versus 2.6.25, check hpet against BAR, v3Yinghai Lu
David Witbrodt tracked down (and bisected) a hpet bootup hang on his system to the following problem: a BIOS bug made the hpet device visible as a generic PCI device. If e820 reserved entries happen to be registered first in the resource tree [which v2.6.26 started doing], then the PCI code will reallocate that device's BAR to some other address - breaking timer IRQs and hanging the system. ( Normally hpet devices are hidden by the BIOS from the OS's PCI discovery via chipset magic. Sometimes the hpet is not a PCI device at all. ) Solve this fundamental fragility by making non-PCI platform drivers insert resources into the resource tree even if it overlaps the e820 reserved entry, to keep the resource manager from updating the BAR. Also do these checks for the ioapic and mmconfig addresses, and emit a warning if this happens. Bisected-by: David Witbrodt <dawitbro@sbcglobal.net> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Tested-by: David Witbrodt <dawitbro@sbcglobal.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-25ALSA: CA0106 on MSI K8N Diamond PLUS MotherboardTravis Place
Correct a previous patch for the ca0106 onboard the MSI K8N Diamond PLUS motherboard. Confirmed to have Line/Mic/Aux working for input, and sound output working as expected. Signed-off-by: Travis Place <wishie@wishie.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-08-24x86: do not enable TSC notifier if we don't need itLinus Torvalds
Impact: crash on non-TSC-equipped CPUs Don't enable the TSC notifier if we *either*: 1. don't have a CPU, or 2. have a CPU with constant TSC. In either of those cases, the notifier is either damaging (1) or useless(2). From: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-08-23Fix oops in acer_wmi driver (acer_wmi_init)Arjan van de Ven
The acer_wmi driver does a DMI scan for quirks, and then sets flags into the "interface" datastructure for some cases. However, the quirks happen real early before "interface" is per se initialized from NULL. The patch below 1) adds a NULL pointer check and 2) (re)runs the quirks at the end, when "interface" has it's final value. Reported-by: kerneloops.org Acked-by: Carlos Corbacho <carlos@strangeworlds.co.uk> CC: stable@vger.kernel.org Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: ipv6: protocol for address routes icmp: icmp_sk() should not use smp_processor_id() in preemptible code pkt_sched: Fix qdisc list locking pkt_sched: Fix qdisc_watchdog() vs. dev_deactivate() race sctp: fix potential panics in the SCTP-AUTH API.
2008-08-23removed unused #include <linux/version.h>'sAdrian Bunk
This patch lets the files using linux/version.h match the files that #include it. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-23rtc: fix deadlockIngo Molnar
if get_rtc_time() is _ever_ called with IRQs off, we deadlock badly in it, waiting for jiffies to increment. So make the code more robust by doing an explicit mdelay(20). This solves a very hard to reproduce/debug hard lockup reported by Mikael Pettersson. Reported-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-23x86 MCE: Fix CPU hotplug problem with multiple multicore AMD CPUsRafael J. Wysocki
During CPU hot-remove the sysfs directory created by threshold_create_bank(), defined in arch/x86/kernel/cpu/mcheck/mce_amd_64.c, has to be removed before its parent directory, created by mce_create_device(), defined in arch/x86/kernel/cpu/mcheck/mce_64.c . Moreover, when the CPU in question is hotplugged again, obviously the latter has to be created before the former. At present, the right ordering is not enforced, because all of these operations are carried out by CPU hotplug notifiers which are not appropriately ordered with respect to each other. This leads to serious problems on systems with two or more multicore AMD CPUs, among other things during suspend and hibernation. Fix the problem by placing threshold bank CPU hotplug callbacks in mce_cpu_callback(), so that they are invoked at the right places, if defined. Additionally, use kobject_del() to remove the sysfs directory associated with the kobject created by kobject_create_and_add() in threshold_create_bank(), to prevent the kernel from crashing during CPU hotplug operations on systems with two or more multicore AMD CPUs. This patch fixes bug #11337. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Andi Kleen <andi@firstfloor.org> Tested-by: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-23x86: fix: make PCI ECS for AMD CPUs hotplug capableRobert Richter
Until now, PCI ECS setup was performed at boot time only and for cpus that are enabled then. This patch fixes this and adds cpu hotplug. Tests sequence (check if ECS bit is set when bringing cpu online again): # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00404010 # ( perl -e 'sysseek(STDOUT, 0xC001001F, 0); print pack "l*", 8, 0x00400010' ) > /dev/cpu/1/msr # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00400010 # echo 0 > /sys/devices/system/cpu/cpu1/online # echo 1 > /sys/devices/system/cpu/cpu1/online # ( perl -e 'sysseek(STDIN, 0xC001001F, 0)'; hexdump -n 8 -e '2/4 "%08x " "\n"' ) < /dev/cpu/1/msr 00000008 00404010 Reported-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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