- 17 8月, 2011 1 次提交
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由 Randy Dunlap 提交于
CONFIG_TASKSTATS just had a change to use netlink, including a change to "depends on NET". Since "select" does not follow dependencies, KVM also needs to depend on NET to prevent build errors when CONFIG_NET is not enabled. Sample of the reported "undefined reference" build errors: taskstats.c:(.text+0x8f686): undefined reference to `nla_put' taskstats.c:(.text+0x8f721): undefined reference to `nla_reserve' taskstats.c:(.text+0x8f8fb): undefined reference to `init_net' taskstats.c:(.text+0x8f905): undefined reference to `netlink_unicast' taskstats.c:(.text+0x8f934): undefined reference to `kfree_skb' taskstats.c:(.text+0x8f9e9): undefined reference to `skb_clone' taskstats.c:(.text+0x90060): undefined reference to `__alloc_skb' taskstats.c:(.text+0x901e9): undefined reference to `skb_put' taskstats.c:(.init.text+0x4665): undefined reference to `genl_register_family' taskstats.c:(.init.text+0x4699): undefined reference to `genl_register_ops' taskstats.c:(.init.text+0x4710): undefined reference to `genl_unregister_ops' taskstats.c:(.init.text+0x471c): undefined reference to `genl_unregister_family' Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 27 7月, 2011 1 次提交
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由 Randy Dunlap 提交于
Fix kconfig dependency warning: warning: (KVM) selects TASK_DELAY_ACCT which has unmet direct dependencies (TASKSTATS) Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 24 7月, 2011 20 次提交
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由 Jonas Bonn 提交于
This patch removes all the module loader hook implementations in the architecture specific code where the functionality is the same as that now provided by the recently added default hooks. Signed-off-by: NJonas Bonn <jonas@southpole.se> Acked-by: NMike Frysinger <vapier@gentoo.org> Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org> Tested-by: NMichal Simek <monstr@monstr.eu> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Xiao Guangrong 提交于
Add tracepoints to trace mmio page fault Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
The idea is from Avi: | We could cache the result of a miss in an spte by using a reserved bit, and | checking the page fault error code (or seeing if we get an ept violation or | ept misconfiguration), so if we get repeated mmio on a page, we don't need to | search the slot list/tree. | (https://lkml.org/lkml/2011/2/22/221) When the page fault is caused by mmio, we cache the info in the shadow page table, and also set the reserved bits in the shadow page table, so if the mmio is caused again, we can quickly identify it and emulate it directly Searching mmio gfn in memslots is heavy since we need to walk all memeslots, it can be reduced by this feature, and also avoid walking guest page table for soft mmu. [jan: fix operator precedence issue] Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Reorganize it for good using the cache Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Use rcu to protect shadow pages table to be freed, so we can safely walk it, it should run fastly and is needed by mmio page fault Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Now, the spte is just from nonprsent to present or present to nonprsent, so we can use some trick to set/clear spte non-atomicly as linux kernel does Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce some interfaces to modify spte as linux kernel does: - mmu_spte_clear_track_bits, it set the spte from present to nonpresent, and track the stat bits(accessed/dirty) of spte - mmu_spte_clear_no_track, the same as mmu_spte_clear_track_bits except tracking the stat bits - mmu_spte_set, set spte from nonpresent to present - mmu_spte_update, only update the stat bits Now, it does not allowed to set spte from present to present, later, we can drop the atomicly opration for X86_32 host, and it is the preparing work to get spte on X86_32 host out of the mmu lock Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce handle_abnormal_pfn to handle fault pfn on page fault path, introduce mmu_invalid_pfn to handle fault pfn on prefetch path It is the preparing work for mmio page fault support Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
If the page fault is caused by mmio, the gfn can not be found in memslots, and 'bad_pfn' is returned on gfn_to_hva path, so we can use 'bad_pfn' to identify the mmio page fault. And, to clarify the meaning of mmio pfn, we return fault page instead of bad page when the gfn is not allowd to prefetch Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
The idea is from Avi: | Maybe it's time to kill off bypass_guest_pf=1. It's not as effective as | it used to be, since unsync pages always use shadow_trap_nonpresent_pte, | and since we convert between the two nonpresent_ptes during sync and unsync. Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Split kvm_mmu_free_page to kvm_mmu_isolate_page and kvm_mmu_free_page One is used to remove the page from cache under mmu lock and the other is used to free page table out of mmu lock Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Move counting used shadow pages from commiting path to preparing path to reduce tlb flush on some paths Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
If 'pt_write' is true, we need to emulate the fault. And in later patch, we need to emulate the fault even though it is not a pt_write event, so rename it to better fit the meaning Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
gw->pte_access is the final access permission, since it is unified with gw->pt_access when we walked guest page table: FNAME(walk_addr_generic): pte_access = pt_access & FNAME(gpte_access)(vcpu, pte, true); Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
If dirty bit is not set, we can make the pte access read-only to avoid handing dirty bit everywhere Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
If the page fault is caused by mmio, we can cache the mmio info, later, we do not need to walk guest page table and quickly know it is a mmio fault while we emulate the mmio instruction Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Introduce vcpu_mmio_gva_to_gpa to translate the gva to gpa, we can use it to cleanup the code between read emulation and write emulation Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Set slot bitmap only if the spte is present Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiao Guangrong 提交于
Properly check the last mapping, and do not walk to the next level if last spte is met Signed-off-by: NXiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Glauber Costa 提交于
This patch implements the kvm bits of the steal time infrastructure. The most important part of it, is the steal time clock. It is an continuous clock that shows the accumulated amount of steal time since vcpu creation. It is supposed to survive cpu offlining/onlining. [marcelo: fix build with CONFIG_KVM_GUEST=n] Signed-off-by: NGlauber Costa <glommer@redhat.com> Acked-by: NRik van Riel <riel@redhat.com> Tested-by: NEric B Munson <emunson@mgebm.net> CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> CC: Peter Zijlstra <peterz@infradead.org> CC: Avi Kivity <avi@redhat.com> CC: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 23 7月, 2011 2 次提交
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由 Ohad Ben-Cohen 提交于
virtio has been so far used only in the context of virtualization, and the virtio Kconfig was sourced directly by the relevant arch Kconfigs when VIRTUALIZATION was selected. Now that we start using virtio for inter-processor communications, we need to source the virtio Kconfig outside of the virtualization scope too. Moreover, some architectures might use virtio for both virtualization and inter-processor communications, so directly sourcing virtio might yield unexpected results due to conflicting selections. The simple solution offered by this patch is to always source virtio's Kconfig in drivers/Kconfig, and remove it from the appropriate arch Kconfigs. Additionally, a virtio menu entry has been added so virtio drivers don't show up in the general drivers menu. This way anyone can use virtio, though it's arguably less accessible (and neat!) for virtualization users now. Note: some architectures (mips and sh) seem to have a VIRTUALIZATION menu merely for sourcing virtio's Kconfig, so that menu is removed too. Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Jonas Bonn 提交于
This patch moves the in-tree architectures that were using the 'generic' delay.h over to using the header file in asm-generic. This is not done using the generic-y mechanism as none of these arch's have started using that mechanism yet. This is a trivial change to make later when the arch begins using generic-y. Note the subtle change to the avr32 and SH architectures where the argument to __const_udelay was previously using the rounded down constant value instead of the rounded up value. Signed-off-by: NJonas Bonn <jonas@southpole.se> Acked-by: NArnd Bergmann <arnd@arndb.de> Acked-by: NHans-Christian Egtvedt <egtvedt@samfundet.no>
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- 22 7月, 2011 11 次提交
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由 Adrian Knoth 提交于
The comment is outdated, wikipedia now has six translations of the cpuid page. Signed-off-by: NAdrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Adrian Knoth 提交于
This patch fixes three typos I've accidentally spotted. Signed-off-by: NAdrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (one was already fixed)
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由 Rusty Russell 提交于
Also removes a long-unused #define and an extraneous semicolon. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
We switch back from using vmcall in 091ebf07 because it was unreliable under kvm, but I missed one (rarely-used) place. Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Rusty Russell 提交于
The Host used to create some page tables for the Guest to use at the top of Guest memory; it would then tell the Guest where this was. In particular, it created linear mappings for 0 and 0xC0000000 addresses because lguest used to switch to its real page tables quite late in boot. However, since d50d8fe1 Linux initialized boot page tables in head_32.S even before the "are we lguest?" boot jump. So, now we can simplify things: the Host pagetable code assumes 1:1 linear mapping until it first calls the LHCALL_NEW_PGTABLE hypercall, which we now do before we reach C code. This also means that the Host doesn't need to know anything about the Guest's PAGE_OFFSET. (Non-Linux guests might not even have such a thing). Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
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由 Andy Lutomirski 提交于
We can map the vDSO straight from kernel data, saving a few page allocations. As an added bonus, the deleted code contained a memory leak. Signed-off-by: NAndy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/2c4ed5c2c2e93603790229e0c3403ae506ccc0cb.1311277573.git.luto@mit.eduSigned-off-by: NH. Peter Anvin <hpa@zytor.com>
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由 H. Peter Anvin 提交于
The machinery for __ARCH_HAS_CLOCKSOURCE_DATA assumed a file in asm-generic would be the default for architectures without their own file in asm/, but that is not how it works. Replace it with a Kconfig option instead. Link: http://lkml.kernel.org/r/4E288AA6.7090804@zytor.comSigned-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@mit.edu> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Tony Luck <tony.luck@intel.com>
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由 H. Peter Anvin 提交于
Yet another variant of the Dell Latitude series which requires reboot=pci. From the E5420 bug report by Daniel J Blueman: > The E6420 is affected also (same platform, different casing and > features), which provides an external confirmation of the issue; I can > submit a patch for that later or include it if you prefer: > http://linux.koolsolutions.com/2009/08/04/howto-fix-linux-hangfreeze-during-reboots-and-restarts/Reported-by: NDaniel J Blueman <daniel.blueman@gmail.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: <stable@kernel.org>
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由 Daniel J Blueman 提交于
Rebooting on the Dell E5420 often hangs with the keyboard or ACPI methods, but is reliable via the PCI method. [ hpa: this was deferred because we believed for a long time that the recent reshuffling of the boot priorities in commit 660e34ce fixed this platform. Unfortunately that turned out to be incorrect. ] Signed-off-by: NDaniel J Blueman <daniel.blueman@gmail.com> Link: http://lkml.kernel.org/r/1305248699-2347-1-git-send-email-daniel.blueman@gmail.comSigned-off-by: NH. Peter Anvin <hpa@zytor.com> Cc: <stable@kernel.org>
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由 Robert Richter 提交于
copy_from_user_nmi() is used in oprofile and perf. Moving it to other library functions like copy_from_user(). As this is x86 code for 32 and 64 bits, create a new file usercopy.c for unified code. Signed-off-by: NRobert Richter <robert.richter@amd.com> Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20110607172413.GJ20052@erda.amd.comSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Cyrill Gorcunov 提交于
This patch: - fixes typos in comments and clarifies the text - renames obscure p4_event_alias::original and ::alter members to ::original and ::alternative as appropriate - drops parenthesis from the return of p4_get_alias_event() No functional changes. Reported-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NCyrill Gorcunov <gorcunov@openvz.org> Link: http://lkml.kernel.org/r/20110721160625.GX7492@sunSigned-off-by: NIngo Molnar <mingo@elte.hu>
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- 21 7月, 2011 5 次提交
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由 Huang Ying 提交于
In kexec jump support, jump back address passed to the kexeced kernel via function calling ABI, that is, the function call return address is the jump back entry. Furthermore, jump back entry == 0 should be used to signal that the jump back or preserve context is not enabled in the original kernel. But in the current implementation the stack position used for function call return address is not cleared context preservation is disabled. The patch fixes this bug. Reported-and-tested-by: NYin Kangkai <kangkai.yin@intel.com> Signed-off-by: NHuang Ying <ying.huang@intel.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: <stable@kernel.org> Link: http://lkml.kernel.org/r/1310607277-25029-1-git-send-email-ying.huang@intel.comSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Alan Cox 提交于
We need to carve up the configuration between: - MID general - Moorestown specific - Medfield specific - Future devices As a base point create an INTEL_MID configuration property. We make the existing MRST configuration a sub-option. This means that the rest of the kernel config can still use X86_MRST checks without anything going backwards. After this is merged future patches will tidy up which devices are MID and which are X86_MRST, as well as add options for Medfield. Signed-off-by: NAlan Cox <alan@linux.intel.com> Link: http://lkml.kernel.org/r/20110712164859.7642.84136.stgit@bob.linux.org.ukSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Sergei Shtylyov 提交于
This code uses PCI_CLASS_REVISION instead of PCI_REVISION_ID, so it wasn't converted by commit 44c10138 ("PCI: Change all drivers to use pci_device->revision") before being moved to arch/x86/... Signed-off-by: NSergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Dave Jones <davej@redhat.com> Link: http://lkml.kernel.org/r/201107111901.39281.sshtylyov@ru.mvista.comSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Greg Dietsche 提交于
This array is read-only. Make it explicit by marking as const. Signed-off-by: NGreg Dietsche <Gregory.Dietsche@cuw.edu> Link: http://lkml.kernel.org/r/1309482653-23648-1-git-send-email-Gregory.Dietsche@cuw.eduSigned-off-by: NIngo Molnar <mingo@elte.hu>
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由 Jan Beulich 提交于
The EFI specification requires that callers of the time related runtime functions serialize with other CMOS accesses in the kernel, as the EFI time functions may choose to also use the legacy CMOS RTC. Besides fixing a latent bug, this is a prerequisite to safely enable the rtc-efi driver for x86, which ought to be preferred over rtc-cmos on all EFI platforms. Signed-off-by: NJan Beulich <jbeulich@novell.com> Acked-by: NMatthew Garrett <mjg59@srcf.ucam.org> Cc: <mjg@redhat.com> Link: http://lkml.kernel.org/r/4E257E33020000780004E319@nat28.tlf.novell.comSigned-off-by: NIngo Molnar <mingo@elte.hu> Cc: Matthew Garrett <mjg@redhat.com>
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