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All architectures use an effectively identical definition of online_page(), so
just make it common code. x86-64, ia64, powerpc and sh are actually
identical; x86-32 is slightly different.
x86-32's differences arise because it puts its hotplug pages in the highmem
zone. We can handle this in the generic code by inspecting the page to see if
its in highmem, and update the totalhigh_pages count appropriately. This
leaves init_32.c:free_new_highpage with a single caller, so I folded it into
add_one_highpage_init.
I also removed an incorrect comment referring to the NUMA case; any NUMA
details have already been dealt with by the time online_page() is called.
[akpm@linux-foundation.org: fix indenting]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Dave Hansen <dave@linux.vnet.ibm.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamez.hiroyu@jp.fujitsu.com>
Tested-by: KAMEZAWA Hiroyuki <kamez.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Christoph Lameter <clameter@sgi.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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So userspace can save/restore the mpstate during migration.
[avi: export the #define constants describing the value]
[christian: add s390 stubs]
[avi: ditto for ia64]
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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We wish to export it to userspace, so move it into the kvm namespace.
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Timers that fire between guest hlt and vcpu_block's add_wait_queue() are
ignored, possibly resulting in hangs.
Also make sure that atomic_inc and waitqueue_active tests happen in the
specified order, otherwise the following race is open:
CPU0 CPU1
if (waitqueue_active(wq))
add_wait_queue()
if (!atomic_read(pit_timer->pending))
schedule()
atomic_inc(pit_timer->pending)
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Signed-off-by: Avi Kivity <avi@qumranet.com>
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Update the related Makefile and KConfig for kvm build
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Some sal/pal calls would be traped to kvm for virtulization
from guest firmware.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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process.c mainly handle interruption injection, and some faults handling.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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asm-offsets.c will generate offset values used for assembly code
for some fileds of special structures.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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optvfault.S Add optimization for some performance-critical
virtualization faults.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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vcpu.c provides processor virtualization logic for kvm.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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trampoline code targets for guest/host world switch.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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mmio.c includes mmio decoder, and related mmio logics.
Signed-off-by: Anthony Xu <Anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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vmm_ivt.S includes an ivt for vmm use.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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vtlb.c includes tlb/VHPT virtulization.
Signed-off-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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vmm.c adds the interfaces with kvm/module, and initialize global data area.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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kvm_minstate.h : Marcos about Min save routines.
lapic.h: apic structure definition.
vcpu.h : routions related to vcpu virtualization.
vti.h : Some macros or routines for VT support on Itanium.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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kvm_ia64.c is created to handle kvm ia64-specific core logic.
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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Move XPC and XPNET from arch/ia64/sn/kernel to drivers/misc/sgi-xp.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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- remove unused 'irq' argument from pfm_do_interrupt_handler()
- remove pointless cast to void*
- add KERN_xxx prefix to printk()
- remove braces around singleton C statement
- in tioce_provider.c, start tioce_dma_consistent() and
tioce_error_intr_handler() function declarations in column 0
This change's main purpose is to prepare for the patchset in
jgarzik/misc-2.6.git#irq-remove, that explores removal of the
never-used 'irq' argument in each interrupt handler.
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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There are many notify_die() and almost all take same style with
ia64_mca_spin(). This patch defines macros and replace them all,
to reduce lines and to improve readability.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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There are 3 hooks in MCA handler, but this DIE_MCA_MONARCH_PROCESS
event does not notified other than for the first monarch.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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While testing with CONFIG_VIRT_CPU_ACCOUNTING=y, I found that
I occasionally get very huge system time in some threads.
So I dug the issue and finally noticed that it was caused
because of an interrupt which interrupt in the following window:
> [arch/ia64/kernel/entry.S: (!CONFIG_PREEMPT && CONFIG_VIRT_CPU_ACCOUNTING)]
>
> ENTRY(ia64_leave_syscall)
> :
> (pUStk) rsm psr.i
> cmp.eq pLvSys,p0=r0,r0 // pLvSys=1: leave from syscall
> (pUStk) cmp.eq.unc p6,p0=r0,r0 // p6 <- pUStk
> .work_processed_syscall:
> adds r2=PT(LOADRS)+16,r12
> (pUStk) mov.m r22=ar.itc // fetch time at leave
> adds r18=TI_FLAGS+IA64_TASK_SIZE,r13
> ;;
> <<< window: from here >>>
> (p6) ld4 r31=[r18] // load current_thread_info()->flags
> ld8 r19=[r2],PT(B6)-PT(LOADRS)
> adds r3=PT(AR_BSPSTORE)+16,r12
> ;;
> mov r16=ar.bsp
> ld8 r18=[r2],PT(R9)-PT(B6)
> (p6) and r15=TIF_WORK_MASK,r31 // any work other than TIF_SYSCALL_TRACE?
> ;;
> ld8 r23=[r3],PT(R11)-PT(AR_BSPSTORE)
> (p6) cmp4.ne.unc p6,p0=r15, r0 // any special work pending?
> (p6) br.cond.spnt .work_pending_syscall
> ;;
> ld8 r9=[r2],PT(CR_IPSR)-PT(R9)
> ld8 r11=[r3],PT(CR_IIP)-PT(R11)
> (pNonSys) break 0 // bug check: we shouldn't be here if pNonSys is TRUE!
> ;;
> invala
> <<< window: to here >>>
> rsm psr.i | psr.ic // turn off interrupts and interruption collection
If pUStk is true, it means we are going to return user mode, hence we fetch
ar.itc to get time at leave from system.
It seems that it is not possible to interrupt the window if pUStk is true,
because interrupts are disabled early. And also disabling interrupt makes
sense because it is safe for referring current_thread_info()->flags.
However interrupting the window while pUStk is true was possible.
The route was:
ia64_trace_syscall
-> .work_pending_syscall_end
-> .work_processed_syscall
Only in case entering the window from this route, interrupts are enabled
during in the window even if pUStk is true. I suppose interrupts must be
disabled here anyway if pUStk is true.
I'm not sure but afraid that what kind of bad effect were there, other
than crazy system time which I found.
FYI, there was a commit 6f6d75825dc49b082906b84537b4df28293c2977 that
points out a bug at same point(exit of ia64_trace_syscall) in 2006.
It can be said that there was an another bug.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pci-2.6: (42 commits)
PCI: Change PCI subsystem MAINTAINER
PCI: pci-iommu-iotlb-flushing-speedup
PCI: pci_setup_bridge() mustn't be __devinit
PCI: pci_bus_size_cardbus() mustn't be __devinit
PCI: pci_scan_device() mustn't be __devinit
PCI: pci_alloc_child_bus() mustn't be __devinit
PCI: replace remaining __FUNCTION__ occurrences
PCI: Hotplug: fakephp: Return success, not ENODEV, when bus rescan is triggered
PCI: Hotplug: Fix leaks in IBM Hot Plug Controller Driver - ibmphp_init_devno()
PCI: clean up resource alignment management
PCI: aerdrv_acpi.c: remove unneeded NULL check
PCI: Update VIA CX700 quirk
PCI: Expose PCI VPD through sysfs
PCI: iommu: iotlb flushing
PCI: simplify quirk debug output
PCI: iova RB tree setup tweak
PCI: parisc: use generic pci_enable_resources()
PCI: ppc: use generic pci_enable_resources()
PCI: powerpc: use generic pci_enable_resources()
PCI: ia64: use generic pci_enable_resources()
...
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Use the generic pci_enable_resources() instead of the arch-specific code.
Unlike this arch-specific code, the generic version:
- does not check for a NULL dev pointer
- skips resources that have neither IORESOURCE_IO nor IORESOURCE_MEM set
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
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None of these files use any of the functionality promised by
asm/semaphore.h. It's possible that they rely on it dragging in some
unrelated header file, but I can't build all these files, so we'll have
fix any build failures as they come up.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.26: (1090 commits)
[NET]: Fix and allocate less memory for ->priv'less netdevices
[IPV6]: Fix dangling references on error in fib6_add().
[NETLABEL]: Fix NULL deref in netlbl_unlabel_staticlist_gen() if ifindex not found
[PKT_SCHED]: Fix datalen check in tcf_simp_init().
[INET]: Uninline the __inet_inherit_port call.
[INET]: Drop the inet_inherit_port() call.
SCTP: Initialize partial_bytes_acked to 0, when all of the data is acked.
[netdrvr] forcedeth: internal simplifications; changelog removal
phylib: factor out get_phy_id from within get_phy_device
PHY: add BCM5464 support to broadcom PHY driver
cxgb3: Fix __must_check warning with dev_dbg.
tc35815: Statistics cleanup
natsemi: fix MMIO for PPC 44x platforms
[TIPC]: Cleanup of TIPC reference table code
[TIPC]: Optimized initialization of TIPC reference table
[TIPC]: Remove inlining of reference table locking routines
e1000: convert uint16_t style integers to u16
ixgb: convert uint16_t style integers to u16
sb1000.c: make const arrays static
sb1000.c: stop inlining largish static functions
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (137 commits)
[SCSI] iscsi: bidi support for iscsi_tcp
[SCSI] iscsi: bidi support at the generic libiscsi level
[SCSI] iscsi: extended cdb support
[SCSI] zfcp: Fix error handling for blocked unit for send FCP command
[SCSI] zfcp: Remove zfcp_erp_wait from slave destory handler to fix deadlock
[SCSI] zfcp: fix 31 bit compile warnings
[SCSI] bsg: no need to set BSG_F_BLOCK bit in bsg_complete_all_commands
[SCSI] bsg: remove minor in struct bsg_device
[SCSI] bsg: use better helper list functions
[SCSI] bsg: replace kobject_get with blk_get_queue
[SCSI] bsg: takes a ref to struct device in fops->open
[SCSI] qla1280: remove version check
[SCSI] libsas: fix endianness bug in sas_ata
[SCSI] zfcp: fix compiler warning caused by poking inside new semaphore (linux-next)
[SCSI] aacraid: Do not describe check_reset parameter with its value
[SCSI] aacraid: Fix down_interruptible() to check the return value
[SCSI] sun3_scsi_vme: add MODULE_LICENSE
[SCSI] st: rename flush_write_buffer()
[SCSI] tgt: use KMEM_CACHE macro
[SCSI] initio: fix big endian problems for auto request sense
...
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (27 commits)
[IA64] kdump: Add crash_save_vmcoreinfo for INIT
[IA64] Fix NUMA configuration issue
[IA64] Itanium Spec updates
[IA64] Untangle sync_icache_dcache() page size determination
[IA64] arch/ia64/kernel/: use time_* macros
[IA64] remove redundant display of free swap space in show_mem()
[IA64] make IOMMU respect the segment boundary limits
[IA64] kprobes: kprobe-booster for ia64
[IA64] fix getpid and set_tid_address fast system calls for pid namespaces
[IA64] Replace explicit jiffies tests with time_* macros.
[IA64] use goto to jump out do/while_each_thread
[IA64] Fix unlock ordering in smp_callin
[IA64] pgd_offset() constfication.
[IA64] kdump: crash.c coding style fix
[IA64] kdump: add kdump_on_fatal_mca
[IA64] Minimize per_cpu reservations.
[IA64] Correct pernodesize calculation.
[IA64] Kernel parameter for max number of concurrent global TLB purges
[IA64] Multiple outstanding ptc.g instruction support
[IA64] Implement smp_call_function_mask for ia64
...
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master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
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Conflicts:
arch/ia64/kernel/mca.c
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Conflicts:
arch/ia64/mm/tlb.c
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Semaphores are no longer performance-critical, so a generic C
implementation is better for maintainability, debuggability and
extensibility. Thanks to Peter Zijlstra for fixing the lockdep
warning. Thanks to Harvey Harrison for pointing out that the
unlikely() was unnecessary.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
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http://bugzilla.kernel.org/show_bug.cgi?id=10124
this change:
commit 08f1c192c3c32797068bfe97738babb3295bbf42
Author: Muli Ben-Yehuda <muli@il.ibm.com>
Date: Sun Jul 22 00:23:39 2007 +0300
x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata
This patch introduces struct pci_sysdata to x86 and x86-64, and
converts the existing two users (NUMA, Calgary) to use it.
This lays the groundwork for having other users of sysdata, such as
the PCI domains work.
The Calgary bits are tested, the NUMA bits just look ok.
replaces pcibios_scan_root by pci_scan_bus_parented...
but in pcibios_scan_root we have a check about scanned busses.
Cc: <yakui.zhao@intel.com>
Cc: Stian Jordet <stian@jordet.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Yinghai Lu" <yhlu.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch fixes the problem that kdump by INIT does not work if we use
makedumpfile. The problem is that after INIT is issued, 2nd kernel
starts and makedumpfile fails with the following error message.
/proc/vmcore doesn't contain vmcoreinfo.
'-x' or '-i' must be specified.
makedumpfile Failed.
The cause of this problem is that kernel does not call
crash_save_vmcoreinfo. When kdump starts by panic or sysrq-trigger,
crash_save_vmcoreinfo is called by crash_kexec. But this function is not
called when kdump starts by INIT. The Attached patch fixes this.
This patch just adds crash_save_vmcoreinfo into machine_kdump_on_init so
that crash_save_vmcoreinfo can be called when kdump starts by INIT.
I tested this patch with linux-2.6.25-rc9 and I confirmed it worked.
Signed-off-by: Takao Indoh <indou.takao@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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There is a NUMA memory configuration issue in 2.6.24:
A 2-node machine of ours has got the following memory layout:
Node 0: 0 - 2 Gbytes
Node 0: 4 - 8 Gbytes
Node 1: 8 - 16 Gbytes
Node 0: 16 - 18 Gbytes
"efi_memmap_init()" merges the three last ranges into one.
"register_active_ranges()" is called as follows:
efi_memmap_walk(register_active_ranges, NULL);
i.e. once for the 4 - 18 Gbytes range. It picks up the node
number from the start address, and registers all the memory for
the node #0.
"register_active_ranges()" should be called as follows to
make sure there is no merged address range at its entry:
efi_memmap_walk(filter_memory, register_active_ranges);
"filter_memory()" is similar to "filter_rsvd_memory()",
but the reserved memory ranges are not filtered out.
Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Untangle the chaos of page size determination in this function by
simply using PAGE_SIZE << compound_order().
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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The functions time_before, time_before_eq, time_after, and time_after_eq are
more robust for comparing jiffies against other values.
So use the time_after() & time_before() macros, defined at linux/jiffies.h,
which deal with wrapping correctly
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: S.Caglar Onur <caglar@pardus.org.tr>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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show_mem() has no need to print the amount of free swap space manually because
show_free_areas() does this already and is called by the former.
The two outputs only differ in text formatting:
printk("Free swap = %lukB\n", ...);
printk("Free swap: %6ldkB\n", ...);
Signed-off-by: Johannes Weiner <hannes@saeurebad.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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IA64's IOMMU implementation allocates memory areas spanning LLD's segment
boundary limit. It forces low level drivers to have a workaround to adjust
scatter lists that the IOMMU builds.
We are in the process of making all the IOMMUs respect the segment boundary
limits to remove such work around in LLDs. This patch is for IA64's IOMMU.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Add kprobe-booster support on ia64.
Kprobe-booster improves the performance of kprobes by eliminating single-step,
where possible. Currently, kprobe-booster is implemented on x86 and x86-64.
This is an ia64 port.
On ia64, kprobe-booster executes a copied bundle directly, instead of single
stepping. Bundles which have B or X unit and which may cause an exception
(including break) are not executed directly. And also, to prevent hitting
break exceptions on the copied bundle, only the hindmost kprobe is executed
directly if several kprobes share a bundle and are placed in different slots.
Note: set_brl_inst() is used for preparing an instruction buffer(it does not
modify any active code), so it does not need any atomic operation.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: bibo,mao <bibo.mao@intel.com>
Cc: Rusty Lynch <rusty.lynch@intel.com>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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The sys_getpid() and sys_set_tid_address() behavior changed from
return current->tgid
to
struct pid *pid;
pid = current->pids[PIDTYPE_PID].pid;
return pid->numbers[pid->level].nr;
But the fast system calls on ia64 still operate the old way. Patch them
appropriately to let ia64 work with pid namespaces. Besides, this is one more
step in deprecating of pid and tgid on task_struct.
The fsys_getppid() is to be patched as well, but its logic is much
more complex now, so I will make it later.
One thing I'm not 100% sure is the trick with the IA64_UPID_SHIFT. On order
to access the pid->level's element of an array I have to perform the following
calculations
pid + sizeof(struct upid) * pid->level
The problem is that ia64 can only multiply float point registers, while all
the offsets I have in code are in rXX ones. Fortunately, the sizeof(struct
upid) is 32 bytes on ia64 (and is very unlikely to ever change), so the
calculations get simpler:
pid + pid->level << 5
So, I introduce the IA64_UPID_SHIFT and use the shl instruction. I also
looked at how gcc compiles the similar place and found that it makes it with
shift as well. Is this OK to do so?
Tested with ski emulator with 2.6.24 kernel, but fits 2.6.25-rc4 and
2.6.25-rc4-mm1 as well.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: David Mosberger-Tang <davidm@hpl.hp.com>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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In arch/ia64/sn/kernel/xpc_{main,partition}.c
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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do_each_thread/while_each_thread is a double loop, so
should use 'goto' rather than 'break' to break out
the loop.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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