- 12 8月, 2008 2 次提交
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由 Rene Herman 提交于
Cyrill Gorcunov observed: > you turned it into early_param so now it's NULL injecting vulnerabled. > Could you please add checking for NULL str param? fix that. Also, change the name of 'str' into 'arg', to make it more apparent that this is an optional argument that can be NULL, not a string parameter that is empty when unset. Reported-by: NCyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: NRene Herman <rene.herman@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Rene Herman 提交于
On 32-bit, "apic" is a __setup() param meaning it is parsed rather late in the game. Make it an early_param() for apic_printk() use by arch/x86/kernel/mpparse.c. On 64-bit, it already is an early_param(). Signed-off-by: NRene Herman <rene.herman@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 21 7月, 2008 1 次提交
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由 Yinghai Lu 提交于
... so don't need to call clear_cpu_cap again in early_identify_cpu, and could use cleared_cpu_caps like other places. Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 18 7月, 2008 3 次提交
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由 Maciej W. Rozycki 提交于
As a microoptimisation, make apic_verbosity unsigned. This will make apic_printk(APIC_QUIET, ...) expand into just printk(...) with the surrounding condition and a reference to apic_verbosity removed. Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Cyrill Gorcunov 提交于
Introduce calibrate_APIC_clock so it could help in further 32/64bit apic code merging. Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Cc: yhlu.kernel@gmail.com Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Maciej W. Rozycki 提交于
Use alternatives to select the workaround for the 11AP Pentium erratum for the affected steppings on the fly rather than build time. Remove the X86_GOOD_APIC configuration option and replace all the calls to apic_write_around() with plain apic_write(), protecting accesses to the ESR as appropriate due to the 3AP Pentium erratum. Remove apic_read_around() and all its invocations altogether as not needed. Remove apic_write_atomic() and all its implementing backends. The use of ASM_OUTPUT2() is not strictly needed for input constraints, but I have used it for readability's sake. I had the feeling no one else was brave enough to do it, so I went ahead and here it is. Verified by checking the generated assembly and tested with both a 32-bit and a 64-bit configuration, also with the 11AP "feature" forced on and verified with gdb on /proc/kcore to work as expected (as an 11AP machines are quite hard to get hands on these days). Some script complained about the use of "volatile", but apic_write() needs it for the same reason and is effectively a replacement for writel(), so I have disregarded it. I am not sure what the policy wrt defconfig files is, they are generated and there is risk of a conflict resulting from an unrelated change, so I have left changes to them out. The option will get removed from them at the next run. Some testing with machines other than mine will be needed to avoid some stupid mistake, but despite its volume, the change is not really that intrusive, so I am fairly confident that because it works for me, it will everywhere. Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 11 7月, 2008 1 次提交
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由 Ingo Molnar 提交于
first step: make the VISWS subarch boot on a regular PC. We take various shortcuts for that. We copy the generic arch setup file over into the VISWS setup file. This is the only step that is not expected to boot on a real VISWS. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 09 7月, 2008 1 次提交
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由 Cyrill Gorcunov 提交于
Add lapic resource into kernel resource map and mark it as busy Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by: NIngo Molnar <mingo@elte.hu> CC: Maciej W. Rozycki <macro@linux-mips.org>
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- 08 7月, 2008 11 次提交
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由 Yinghai Lu 提交于
change the enable_local_apic to static force_enable_local_apic for 32bit Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Yinghai Lu 提交于
instead of calling it from trap_init() also move init ioapic mapping out of apic_32.c so 32 bit do same as 64 bit Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Cyrill Gorcunov 提交于
Since it is possible NMI_ definitions could be changed one day we better print out real nmi_watchdog value instead of constant string. Signed-off-by: NCyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Yinghai Lu 提交于
if acpi=off, acpi=noirq and pci=noacpi, we need to disable apic. Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Maciej W. Rozycki" <macro@linux-mips.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jack Steiner 提交于
physid_mask_of_physid() causes a huge stack (12k) to be created if the number of APICS is large. Replace physid_mask_of_physid() with a new function that does not create large stacks. This is a problem only on large x86_64 systems. this paves the way to increase MAX_APICS. Signed-off-by: NJack Steiner <steiner@sgi.com> Cc: linux-mm@kvack.org Cc: mingo@elte.hu Cc: tglx@linutronix.de Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Mike Travis 提交于
* Introduce a new PER_CPU macro called "EARLY_PER_CPU". This is used by some per_cpu variables that are initialized and accessed before there are per_cpu areas allocated. ["Early" in respect to per_cpu variables is "earlier than the per_cpu areas have been setup".] This patchset adds these new macros: DEFINE_EARLY_PER_CPU(_type, _name, _initvalue) EXPORT_EARLY_PER_CPU_SYMBOL(_name) DECLARE_EARLY_PER_CPU(_type, _name) early_per_cpu_ptr(_name) early_per_cpu_map(_name, _idx) early_per_cpu(_name, _cpu) The DEFINE macro defines the per_cpu variable as well as the early map and pointer. It also initializes the per_cpu variable and map elements to "_initvalue". The early_* macros provide access to the initial map (usually setup during system init) and the early pointer. This pointer is initialized to point to the early map but is then NULL'ed when the actual per_cpu areas are setup. After that the per_cpu variable is the correct access to the variable. The early_per_cpu() macro is not very efficient but does show how to access the variable if you have a function that can be called both "early" and "late". It tests the early ptr to be NULL, and if not then it's still valid. Otherwise, the per_cpu variable is used instead: #define early_per_cpu(_name, _cpu) \ (early_per_cpu_ptr(_name) ? \ early_per_cpu_ptr(_name)[_cpu] : \ per_cpu(_name, _cpu)) A better method is to actually check the pointer manually. In the case below, numa_set_node can be called both "early" and "late": void __cpuinit numa_set_node(int cpu, int node) { int *cpu_to_node_map = early_per_cpu_ptr(x86_cpu_to_node_map); if (cpu_to_node_map) cpu_to_node_map[cpu] = node; else per_cpu(x86_cpu_to_node_map, cpu) = node; } * Add a flag "arch_provides_topology_pointers" that indicates pointers to topology cpumask_t maps are available. Otherwise, use the function returning the cpumask_t value. This is useful if cpumask_t set size is very large to avoid copying data on to/off of the stack. * The coverage of CONFIG_DEBUG_PER_CPU_MAPS has been increased while the non-debug case has been optimized a bit. * Remove an unreferenced compiler warning in drivers/base/topology.c * Clean up #ifdef in setup.c For inclusion into sched-devel/latest tree. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git + sched-devel/latest .../mingo/linux-2.6-sched-devel.git Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Maciej W. Rozycki 提交于
For the UP case the NMI watchdog downgrade is done consistently in APIC_init_uniprocessor() now. Remove redundant code used only when BIOS-disabled local APIC is activated. Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Maciej W. Rozycki 提交于
If configured to use the I/O APIC, the NMI watchdog is deemed to fail if the chip will not be used in the UP configuration, because "noapic" has been specified or the chip is simply not there. Downgrade to the local APIC watchdog to rectify. The new #ifdef is ugly, I know. A proper solution is to provide suitable definitions of smp_found_config, etc. for !CONFIG_X86_IO_APIC in a header. Likewise the whole if () condition should be moved to a static inline function. Such clean-ups are beyond the scope of this change and can be done once the whole issue of the timer has been sorted out. Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
This reverts commit 2229ff84f01746d02fb6b79e156fb5cce48c908f. A better fix from Maciej will be merged.
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由 Ingo Molnar 提交于
nmi_watchdog=1 hangs on 64-bit: [ 0.250000] Detected 12.564 MHz APIC timer. [ 0.254178] APIC timer registered as dummy, due to nmi_watchdog=1! [ 0.260366] Testing NMI watchdog ... <4>WARNING: CPU#0: NMI appears to be stuck (0->0)! [ ... ] [ 0.470003] calling genl_init+0x0/0xd0 [ hard hang ] bisected it down to: git-bisect start git-bisect good 1beee8dc git-bisect bad 11582ece0aaa2d0f94f345c08a4ab9997078a083 git-bisect bad 5479c623bb44089844022c03d4c0eb16d5b7a15f git-bisect bad cfb4c7fabeb499e1c29f9d1878968e37a938e28a git-bisect good 246dd412 git-bisect bad 3f8237eaff7dc1e35fa791dae095574fd974e671 git-bisect good 90e23b13ab849e2a11f00c655eb3a2011b4623be git-bisect bad 833526a34eeefc117df3191a594c3c3a4f15a9ac git-bisect good 791b93d3dfaf16c23e978bec0cc0a3dd9d855d63 git-bisect bad 65767c64068f2c93e56a1accfed5c78230ac12d7 git-bisect bad 2abc5c05dd82c188e3bdf6641a274f013348d14b git-bisect bad 317e1f2597ffb4d4db940577bbe56dc6e881ef07 | 317e1f2597ffb4d4db940577bbe56dc6e881ef07 is first bad commit | commit 317e1f2597ffb4d4db940577bbe56dc6e881ef07 | Author: Maciej W. Rozycki <macro@linux-mips.org> | Date: Wed May 21 22:10:22 2008 +0100 | x86: I/O APIC: clean up the 8259A on a NMI watchdog failure the problem is that in the dummy-lapic branch we rely on the i8259A but if the NMI watchdog fails we turn off IRQ 0 - which doesnt work too well ;-) Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Thomas Gleixner 提交于
C1E on AMD machines is like C3 but without control from the OS. Up to now we disabled the local apic timer for those machines as it stops when the CPU goes into C1E. This excludes those machines from high resolution timers / dynamic ticks, which hurts especially X2 based laptops. The current boot time C1E detection has another, more serious flaw as well: some BIOSes do not enable C1E until the ACPI processor module is loaded. This causes systems to stop working after that point. To work nicely with C1E enabled machines we use a separate idle function, which checks on idle entry whether C1E was enabled in the Interrupt Pending Message MSR. This allows us to do timer broadcasting for C1E and covers the late enablement of C1E as well. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 26 6月, 2008 1 次提交
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由 Jens Axboe 提交于
This converts x86, x86-64, and xen to use the new helpers for smp_call_function() and friends, and adds support for smp_call_function_single(). Acked-by: NIngo Molnar <mingo@elte.hu> Acked-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 10 6月, 2008 1 次提交
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由 Yinghai Lu 提交于
a multi-socket test-system with 3 or 4 ioapics, when 4 dualcore cpus or 2 quadcore cpus installed, needs to switch to bigsmp or physflat. CPU apic id is [4,11] instead of [0,7], and we need to check max apic id instead of cpu numbers. also add check for 32 bit when acpi is not compiled in or acpi=off. Signed-off-by: NYinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 25 5月, 2008 3 次提交
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由 Alexey Starikovskiy 提交于
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由 Alexey Starikovskiy 提交于
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由 Alexey Starikovskiy 提交于
Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 13 5月, 2008 2 次提交
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由 Alan Mayer 提交于
Fixes the build error introduced by my FIRST_SYSTEM_VECTOR patch Signed-off-by: NAlan Mayer <ajm@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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由 Alan Mayer 提交于
The SGI UV system needs several more system vectors than a vanilla x86_64 system. Rather than burden the other archs with extra system vectors that they don't use, change FIRST_SYSTEM_VECTOR to a variable, so that it can be dynamic. Signed-off-by: NAlan Mayer <ajm@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 26 4月, 2008 1 次提交
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由 Akinobu Mita 提交于
Remove the magic number in the third argment of div_sc(). Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 25 4月, 2008 1 次提交
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由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 17 4月, 2008 11 次提交
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由 Alexey Starikovskiy 提交于
Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jack Steiner 提交于
Introduce a function to read the local APIC_ID. This change is in preparation for additional changes to the APICID functions that will come in a later patch. Signed-off-by: NJack Steiner <steiner@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Alexey Starikovskiy 提交于
Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Alexey Starikovskiy 提交于
Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Alexey Starikovskiy 提交于
Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Alexey Starikovskiy 提交于
Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Alexey Starikovskiy 提交于
Signed-off-by: NAlexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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It splits setup_local_APIC in two, providing a function corresponding to the ending part of it. As a side effect, smp_callin looks the same between i386 and x86_64. Signed-off-by: NGlauber Costa <gcosta@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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it is a little bit more complicated than x86_64 due to erratas and other stuff, but its existance will ease integration Signed-off-by: NGlauber Costa <gcosta@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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We move it to apic_32.c, since it's irq related anyway, and only called from that file. Signed-off-by: NGlauber Costa <gcosta@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Robert Richter 提交于
Signed-off-by: NRobert Richter <robert.richter@amd.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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- 30 1月, 2008 1 次提交
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由 Andi Kleen 提交于
When the kernel panics early for some unrelated reason there would be eventually an early exception inside panic because clear_local_APIC tried to disable the not yet mapped APIC. Check for that explicitely. Signed-off-by: NAndi Kleen <ak@suse.de> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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