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* KVM: Unregister cpufreq notifier on unloadJan Kiszka2009-04-22
| | | | | | | | Properly unregister cpufreq notifier on onload if it was registered during init. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: release time_page on vcpu destructionJoerg Roedel2009-04-22
| | | | | | | | | Not releasing the time_page causes a leak of that page or the compound page it is situated in. Cc: stable@kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: MMU: disable global page optimizationMarcelo Tosatti2009-04-22
| | | | | | | | | Complexity to fix it not worthwhile the gains, as discussed in http://article.gmane.org/gmane.comp.emulators.kvm.devel/28649. Cc: stable@kernel.org Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* FRV: Fix the section attribute on UP DECLARE_PER_CPU()David Howells2009-04-21
| | | | | | | | | | | | | | | | | | | | | | | | In non-SMP mode, the variable section attribute specified by DECLARE_PER_CPU() does not agree with that specified by DEFINE_PER_CPU(). This means that architectures that have a small data section references relative to a base register may throw up linkage errors due to too great a displacement between where the base register points and the per-CPU variable. On FRV, the .h declaration says that the variable is in the .sdata section, but the .c definition says it's actually in the .data section. The linker throws up the following errors: kernel/built-in.o: In function `release_task': kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o To fix this, DECLARE_PER_CPU() should simply apply the same section attribute as does DEFINE_PER_CPU(). However, this is made slightly more complex by virtue of the fact that there are several variants on DEFINE, so these need to be matched by variants on DECLARE. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* clocksource: pass clocksource to read() callbackMagnus Damm2009-04-21
| | | | | | | | | | | | | | Pass clocksource pointer to the read() callback for clocksources. This allows us to share the callback between multiple instances. [hugh@veritas.com: fix powerpc build of clocksource pass clocksource mods] [akpm@linux-foundation.org: cleanup] Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Separate out common fstatat code into vfs_fstatatOleg Drokin2009-04-20
| | | | | | | | | | This is a version incorporating Christoph's suggestion. Separate out common *fstatat functionality into a single function instead of duplicating it all over the code. Signed-off-by: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* lguest: fix guest crash on non-linear addresses in gdt pvopsRusty Russell2009-04-19
| | | | | | | | | | | | | | Fixes guest crash 'lguest: bad read address 0x4800000 len 256' The new per-cpu allocator ends up handing a non-linear address to write_gdt_entry. We do __pa() on it, and hand it to the host, which kills us. I've long wanted to make the hypercall "LOAD_GDT_ENTRY" to match the IDT code, but had no pressing reason until now. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: lguest@ozlabs.org
* Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-04-17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: fix microcode driver newly spewing warnings x86, PAT: Remove page granularity tracking for vm_insert_pfn maps x86: disable X86_PTRACE_BTS for now x86, documentation: kernel-parameters replace X86-32,X86-64 with X86 x86: pci-swiotlb.c swiotlb_dma_ops should be static x86, PAT: Remove duplicate memtype reserve in devmem mmap x86, PAT: Consolidate code in pat_x_mtrr_type() and reserve_memtype() x86, PAT: Changing memtype to WC ensuring no WB alias x86, PAT: Handle faults cleanly in set_memory_ APIs x86, PAT: Change order of cpa and free in set_memory_wb x86, CPA: Change idmap attribute before ioremap attribute setup
| * x86: fix microcode driver newly spewing warningsDmitry Adamushko2009-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jeff Garzik reported this WARN_ON() noise: > Kernel: 2.6.30-rc1-00306-g8371f87 > Hardware: ICH10 x86-64 > > This is a regression from 2.6.29. Microcode spews the following WARNING > multiple times during boot: > > ------------[ cut here ]------------ > WARNING: at fs/sysfs/group.c:138 sysfs_remove_group+0xeb/0xf0() > Hardware name: sysfs group ffffffffa0209700 not found for > kobject 'cpu0' Keep sysfs files around for cpus even when we failed to locate microcode for them at the moment of module loading. The appropriate microcode firmware can become available later on. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, PAT: Remove page granularity tracking for vm_insert_pfn mapsPallipadi, Venkatesh2009-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This change resolves the problem of too many single page entries in pat_memtype_list and "freeing invalid memtype" errors with i915, reported here: http://marc.info/?l=linux-kernel&m=123845244713183&w=2 Remove page level granularity track and untrack of vm_insert_pfn. memtype tracking at page granularity does not scale and cleaner approach would be for the driver to request a type for a bigger IO address range or PCI io memory range for that device, either at mmap time or driver init time and just use that type during vm_insert_pfn. This patch just removes the track/untrack of vm_insert_pfn. That means we will be in same state as 2.6.28, with respect to these APIs. Newer APIs for the drivers to request a memtype for a bigger region is coming soon. [ Impact: fix Xorg startup warnings and hangs ] Reported-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com> Tested-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> LKML-Reference: <20090408223716.GC3493@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: disable X86_PTRACE_BTS for nowIngo Molnar2009-04-15
| | | | | | | | | | | | | | | | | | | | | | Oleg Nesterov found a couple of races in the ptrace-bts code and fixes are queued up for it but they did not get ready in time for the merge window. We'll merge them in v2.6.31 - until then mark the feature as CONFIG_BROKEN. There's no user-space yet making use of this so it's not a big issue. Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86: pci-swiotlb.c swiotlb_dma_ops should be staticJaswinder Singh Rajput2009-04-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce kernel size a bit, address sparse warning Addresses the problem pointed out by this sparse warning: arch/x86/kernel/pci-swiotlb.c:53:20: warning: symbol 'swiotlb_dma_ops' was not declared. Should it be static? For x86: swiotlb_dma_ops can be static, because it's not used outside of pci-swiotlb.c Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> LKML-Reference: <1239558861.3938.2.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, PAT: Remove duplicate memtype reserve in devmem mmapSuresh Siddha2009-04-10
| | | | | | | | | | | | | | | | | | | | | | | | /dev/mem mmap code was doing memtype reserve/free for a while now. Recently we added memtype tracking in remap_pfn_range, and /dev/mem mmap uses it indirectly. So, we don't need seperate tracking in /dev/mem code any more. That means another ~100 lines of code removed :-). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20090409212709.085210000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, PAT: Consolidate code in pat_x_mtrr_type() and reserve_memtype()Suresh Siddha2009-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix pat_x_mtrr_type() to use UC_MINUS when the mtrr type return UC. This is to be consistent with ioremap() and ioremap_nocache() which uses UC_MINUS. Consolidate the code such that reserve_memtype() also uses pat_x_mtrr_type() when the caller doesn't specify any special attribute (non WB attribute). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20090409212708.939936000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, PAT: Changing memtype to WC ensuring no WB aliasvenkatesh.pallipadi@intel.com2009-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As per SDM, there should not be any aliasing of a WC with any cacheable type across CPUs. That is if one CPU is changing the identity map memtype to _WC, no other CPU at the time of this change should not have a TLB for this page that carries a WB attribute. SDM suggests to make the page not present. But for that we will have to handle any page faults that can potentially happen due to these pages being not present. Other way to deal with this without having any WB mapping is to change the page first to UC and then to WC. This ensures that we meet the SDM requirement of no cacheable alais to WC page. This also has same or lower overhead than marking the page not present and making it present later. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <20090409212708.797481000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, PAT: Handle faults cleanly in set_memory_ APIsvenkatesh.pallipadi@intel.com2009-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Handle faults and do proper cleanups in set_memory_*() functions. In some cases, these functions were not doing proper free on failure paths. With the changes to tracking memtype of RAM pages in struct page instead of pat list, we do not need the changes in commits c5e147. This patch reverts that change. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <20090409212708.653222000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, PAT: Change order of cpa and free in set_memory_wbvenkatesh.pallipadi@intel.com2009-04-10
| | | | | | | | | | | | | | | | | | | | | | To be free of aliasing due to races, set_memory_* interfaces should follow ordering of reserving, changing memtype to UC/WC, changing memtype back to WB followed by free. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <20090409212708.512280000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, CPA: Change idmap attribute before ioremap attribute setupSuresh Siddha2009-04-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the identity mapping with the requested attribute first, before we setup the virtual memory mapping with the new requested attribute. This makes sure that there is no window when identity map'ed attribute may disagree with ioremap range on the attribute type. This also avoids doing cpa on the ioremap'ed address twice (first in ioremap_page_range and then in ioremap_change_attr using vaddr), and should improve ioremap performance a bit. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20090409212708.373330000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge branch 'x86/uv' of ↵Linus Torvalds2009-04-16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86/uv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: UV BAU distribution and payload MMRs x86: UV: BAU partition-relative distribution map x86, uv: add Kconfig dependency on NUMA for UV systems x86: prevent /sys/firmware/sgi_uv from being created on non-uv systems x86, UV: Fix for nodes with memory and no cpus x86, UV: system table in bios accessed after unmap x86: UV BAU messaging timeouts x86: UV BAU and nodes with no memory
| * | x86: UV BAU distribution and payload MMRsCliff Wickman2009-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch correctly sets BAU memory mapped registers to point to the sending activation descriptor table and target payload table. The "Broadcast Assist Unit" is used for TLB shootdown in UV. The memory mapped registers that point to sending and receiving memory structures contain node numbers. In one case the __pa() function did not provide the node id of memory on blade zero in configurations where that id is nonzero. In another case, it was assumed that memory was allocated on the local node. That assumption is not true in a configuration in which the node has no memory. Tested on the UV hardware simulator. [ Impact: fix possible runtime crash due to incorrect TLB logic ] Signed-off-by: Cliff Wickman <cpw@sgi.com> LKML-Reference: <E1LuR5Z-0007An-B8@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: UV: BAU partition-relative distribution mapCliff Wickman2009-04-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch enables each partition's BAU distribution bit map to be partition-relative. The distribution bitmap had been constructed assuming 0 as the base node number. That construct would not have allowed a total system of greater than 256 nodes. It also corrects an error that occurred when the first blade's nasid was not zero. That nasid was stored as the base node. The base node number gets added by hardware to the node numbers implied in the distribution bitmap, resulting in invalid target nasids. Tested on the UV hardware simulator. Signed-off-by: Cliff Wickman <cpw@sgi.com> LKML-Reference: <E1Ltl0C-0004Ob-37@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86, uv: add Kconfig dependency on NUMA for UV systemsJack Steiner2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: build fix Add Kconfig dependency on NUMA for enabling UV. Although it might be possible to configure non-NUMA UV systems, they are unsupported and not interesting. Much of the infrastructure for UV requires NUMA support. Signed-off-by: Jack Steiner <steiner@sgi.com> LKML-Reference: <20090403203942.GA20137@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: prevent /sys/firmware/sgi_uv from being created on non-uv systemsRuss Anderson2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | /sys/firmware/sgi_uv should only be created on uv systems. Signed-off-by: Russ Anderson <rja@sgi.com> LKML-Reference: <20090403222423.GA28546@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86, UV: Fix for nodes with memory and no cpusJack Steiner2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fix initialization of UV blade information for systems that have nodes with memory but no cpus. Signed-off-by: Jack Steiner <steiner@sgi.com> LKML-Reference: <20090330140111.GA18461@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86, UV: system table in bios accessed after unmapRuss Anderson2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | Use the copy of UV system table in kernel memory, not the one in bios after unmapping. Signed-off-by: Russ Anderson <rja@sgi.com> LKML-Reference: <20090330225240.GA22776@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: UV BAU messaging timeoutsCliff Wickman2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch replaces a 'nop' uv_enable_timeouts() in the UV TLB shootdown code. (somehow, long ago that function got eviscerated) If any cpu in the destination node does not get interrupted by the message and post completion in a reasonable time the hardware should respond to the sender with an error. This function enables such timeouts. Tested on the UV hardware simulator. Signed-off-by: Cliff Wickman <cpw@sgi.com> LKML-Reference: <E1LpjXU-00007e-Qh@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: UV BAU and nodes with no memoryCliff Wickman2009-04-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes BAU initialization for systems containing nodes with no memory and for systems with non-consecutive node numbers. Fixes and clarifies situations where pnode should be used instead of node id. Tested on the UV hardware simulator. Signed-off-by: Cliff Wickman <cpw@sgi.com> LKML-Reference: <E1LpjX3-00007N-12@eag09.americas.sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | acpi-cpufreq: fix 'smp_call_function_many()' confusionLinus Torvalds2009-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that 'smp_call_function_many()' doesn't work at all like 'smp_call_function_single()', and my change to Andrew's patch to use it rather than a loop over all CPU's acpi-cpufreq doesn't work. My bad. 'smp_call_function_many()' has two "features" (aka "documented bugs"): (a) it needs to be called with preemption disabled, because it uses smp_processor_id() without guarding the CPU lookup with 'get_cpu()' and 'put_cpu()' like the 'single' variant does. (b) even if the current CPU is part of the CPU mask, it won't do the call on that CPU. Still, we're better off trying to use 'smp_call_function_many()' than looping over CPU's, since it at least in theory allows us to use a broadcast IPI and do it all in parallel. So let's just work around the silly semantic bugs in that function. Reported-and-tested-by: Ali Gholami Rudi <ali@rudi.ir> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andrew Morton <akpm@linux-foundation.org>, Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | x86 microcode: revert some work_on_cpuHugh Dickins2009-04-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Revert part of af5c820a3169e81af869c113e18ec7588836cd50 ("x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c") That change is causing only one Intel CPU's microcode to be updated e.g. microcode: CPU3 updated from revision 0x9 to 0x17, date = 2005-04-22 where before it announced that also for CPU0 and CPU1 and CPU2. We cannot use work_on_cpu() in the CONFIG_MICROCODE_OLD_INTERFACE code, because Intel's request_microcode_user() involves a copy_from_user() from /sbin/microcode_ctl, which therefore needs to be on that CPU at the time. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Fix quilt merge error in acpi-cpufreq.cLinus Torvalds2009-04-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We ended up incorrectly using '&cur' instead of '&readin' in the work_on_cpu() -> smp_call_function_single() transformation in commit 01599fca6758d2cd133e78f87426fc851c9ea725 ("cpufreq: use smp_call_function_[single|many]() in acpi-cpufreq.c"). Andrew explains: "OK, the acpi tree went and had conflicting changes merged into it after I'd written the patch and it appears that I incorrectly reverted part of 18b2646fe3babeb40b34a0c1751e0bf5adfdc64c while fixing the resulting rejects. Switching it to `readin' looks correct." Acked-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'for-rc1/xen/core' of ↵Linus Torvalds2009-04-13
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen * 'for-rc1/xen/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: xen: add FIX_TEXT_POKE to fixmap xen: honour VCPU availability on boot xen: clean up gate trap/interrupt constants xen: set _PAGE_NX in __supported_pte_mask before pagetable construction xen: resume interrupts before system devices. xen/mmu: weaken flush_tlb_other test xen/mmu: some early pagetable cleanups Xen: Add virt_to_pfn helper function x86-64: remove PGE from must-have feature list xen: mask XSAVE from cpuid NULL noise: arch/x86/xen/smp.c xen: remove xen_load_gdt debug xen: make xen_load_gdt simpler xen: clean up xen_load_gdt xen: split construction of p2m mfn tables from registration xen: separate p2m allocation from setting xen: disable preempt for leave_lazy_mmu
| * | | xen: add FIX_TEXT_POKE to fixmapJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | FIX_TEXT_POKE[01] are used to map kernel addresses, so they're mapping pfns, not mfns. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: clean up gate trap/interrupt constantsJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Use GATE_INTERRUPT/TRAP rather than 0xe/f. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: set _PAGE_NX in __supported_pte_mask before pagetable constructionJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Some 64-bit machines don't support the NX flag in ptes. Check for NX before constructing the kernel pagetables. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen/mmu: weaken flush_tlb_other testJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fixes crashing bug There's no particular problem with getting an empty cpu mask, so just shortcut-return if we get one. Avoids crash reported by Christophe Saout <christophe@saout.de> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen/mmu: some early pagetable cleanupsJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. make sure early-allocated ptes are pinned, so they can be later unpinned 2. don't pin pmd+pud, just make them RO 3. scatter some __inits around Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | Xen: Add virt_to_pfn helper functionAlex Nixon2009-04-08
| | | | | | | | | | | | | | | | Signed-off-by: Alex Nixon <alex.nixon@citrix.com>
| * | | x86-64: remove PGE from must-have feature listJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | PGE may not be available when running paravirtualized, so test the cpuid bit before using it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: mask XSAVE from cpuidJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Xen leaves XSAVE set in cpuid, but doesn't allow cr4.OSXSAVE to be set. This confuses the kernel and it ends up crashing on an xsetbv instruction. At boot time, try to set cr4.OSXSAVE, and mask XSAVE out of cpuid it we can't. This will produce a spurious error from Xen, but allows us to support XSAVE if/when Xen does. This also factors out the cpuid mask decisions to boot time. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | NULL noise: arch/x86/xen/smp.cHannes Eder2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix this sparse warnings: arch/x86/xen/smp.c:316:52: warning: Using plain integer as NULL pointer arch/x86/xen/smp.c:421:60: warning: Using plain integer as NULL pointer Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: remove xen_load_gdt debugJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Don't need the noise. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: make xen_load_gdt simplerJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove use of multicall machinery which is unused (gdt loading is never performance critical). This removes the implicit use of percpu variables, which simplifies understanding how the percpu code's use of load_gdt interacts with this code. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: clean up xen_load_gdtJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | Makes the logic a bit clearer. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: split construction of p2m mfn tables from registrationJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Build the p2m_mfn_list_list early with the rest of the p2m table, but register it later when the real shared_info structure is in place. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: separate p2m allocation from settingJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | When doing very early p2m setting, we need to separate setting from allocation, so split things up accordingly. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
| * | | xen: disable preempt for leave_lazy_mmuJeremy Fitzhardinge2009-04-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | xen_mc_flush() requires preemption to be disabled for its own sanity, so disable it while we're flushing. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
* | | | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-04-13
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 linux kernel support for YMM state x86: fix wrong section of pat_disable & make it static x86: Fix section mismatches in mpparse x86: fix set_fixmap to use phys_addr_t x86: Document get_user_pages_fast() x86, intr-remap: fix eoi for interrupt remapping without x2apic
| * | | | x86: add linux kernel support for YMM stateSuresh Siddha2009-04-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: save/restore Intel-AVX state properly between tasks Intel Advanced Vector Extensions (AVX) introduce 256-bit vector processing capability. More about AVX at http://software.intel.com/sites/avx Add OS support for YMM state management using xsave/xrstor infrastructure to support AVX. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <1239402084.27006.8057.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86: fix wrong section of pat_disable & make it staticMarcin Slusarz2009-04-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pat_disable cannot be __cpuinit anymore because it's called from pat_init and the callchain looks like this: pat_disable [cpuinit] <- pat_init <- generic_set_all <- ipi_handler <- set_mtrr <- (other non init/cpuinit functions) WARNING: arch/x86/mm/built-in.o(.text+0x449e): Section mismatch in reference from the function pat_init() to the function .cpuinit.text:pat_disable() The function pat_init() references the function __cpuinit pat_disable(). This is often because pat_init lacks a __cpuinit annotation or the annotation of pat_disable is wrong. Non CONFIG_X86_PAT version of pat_disable is static inline, so this version can be static too (and there are no callers outside of this file). Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <49DFB055.6070405@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | x86: Fix section mismatches in mpparseRakib Mullick2009-04-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix section mismatch In arch/x86/kernel/mpparse.c, smp_reserve_bootmem() has been called and also refers to a function which is in .init section. Thus causes the first warning. And check_irq_src() also requires an __init, because it refers to an .init section. Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <b9df5fa10904102004g51265d9axc8d07278bfdb6ba0@mail.gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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