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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen/mm: do direct hypercall in xen_set_pte() if batching is unavailable
On Tue, Jun 05, 2012 at 12:07:46PM -0400, Konrad Rzeszutek Wilk wrote: > On Fri, Jun 01, 2012 at 04:14:54PM +0100, David Vrabel wrote: > > From: David Vrabel <david.vrabel@xxxxxxxxxx> > > > > In xen_set_pte() if batching is unavailable (because the caller is in > > an interrupt context such as handling a page fault) it would fall back > > to using native_set_pte() and trapping and emulating the PTE write. > > > > On 32-bit guests this requires two traps for each PTE write (one for > > each dword of the PTE). Instead, do one mmu_update hypercall > > directly. > > OK. > > > > This significantly improves page fault performance in 32-bit PV > > guests. > > Nice! With this patch I keep on getting this (which is v3.5-rc2 plus my patches in stable/for-linus-3.5 and yours): Loading latest/xen.gz... ok Loading latest/vmlinuz... ok Loading latest/initramfs.cpio.gz... ok __ __ _ _ _ _ ____ ___ ____ ____ _____=20 \ \/ /___ _ __ | || | / | / |___ \ / _ \| ___|___ \|___ / = =20 (XEN) Xen version 4.1-120609 (konrad@xxxxxxxxxxxx) (gcc version 4.4.4 20100= 503 (Red Hat 4.4.4-2) (GCC) ) Sat Jun 9 10:49:23 EDT 2012 (XEN) Latest ChangeSet: Fri May 25 08:18:47 2012 +0100 23298:435493696053 (XEN) Bootloader: unknown (XEN) Command line: com1=3D115200,8n1 console=3Dcom1,vga guest_loglvl=3Dall= dom0_mem=3D1G,max:2G dom0_max_vcpus=3D2 cpufreq=3Dperformance,verbose logl= vl=3Dall apic=3Ddebug (XEN) Video information: (XEN) VGA is text mode 80x25, font 8x16 (XEN) VBE/DDC methods: none; EDID transfer time: 0 seconds (XEN) EDID info not retrieved because no DDC retrieval method detected (XEN) Disc information: (XEN) Found 1 MBR signatures (XEN) Found 1 EDD information structures (XEN) Xen-e820 RAM map: (XEN) 0000000000000000 - 000000000009ec00 (usable) (XEN) 000000000009ec00 - 00000000000a0000 (reserved) (XEN) 00000000000e0000 - 0000000000100000 (reserved) (XEN) 0000000000100000 - 0000000020000000 (usable) (XEN) 0000000020000000 - 0000000020200000 (reserved) (XEN) 0000000020200000 - 0000000040000000 (usable) (XEN) 0000000040000000 - 0000000040200000 (reserved) (XEN) 0000000040200000 - 00000000bad80000 (usable) (XEN) 00000000bad80000 - 00000000badc9000 (ACPI NVS) (XEN) 00000000badc9000 - 00000000badd1000 (ACPI data) (XEN) 00000000badd1000 - 00000000badf4000 (reserved) (XEN) 00000000badf4000 - 00000000badf6000 (usable) (XEN) 00000000badf6000 - 00000000bae06000 (reserved) (XEN) 00000000bae06000 - 00000000bae14000 (ACPI NVS) (XEN) 00000000bae14000 - 00000000bae3c000 (reserved) (XEN) 00000000bae3c000 - 00000000bae7f000 (ACPI NVS) (XEN) 00000000bae7f000 - 00000000bb000000 (usable) (XEN) 00000000bb800000 - 00000000bfa00000 (reserved) (XEN) 00000000fed1c000 - 00000000fed40000 (reserved) (XEN) 00000000ff000000 - 0000000100000000 (reserved) (XEN) 0000000100000000 - 000000023fe00000 (usable) (XEN) ACPI: RSDP 000F0450, 0024 (r2 ALASKA) (XEN) ACPI: XSDT BADC9068, 0054 (r1 ALASKA A M I 1072009 AMI 10013) (XEN) ACPI: FACP BADD0308, 00F4 (r4 ALASKA A M I 1072009 AMI 10013) (XEN) ACPI: DSDT BADC9150, 71B5 (r2 ALASKA A M I 15 INTL 20051117) (XEN) ACPI: FACS BAE0BF80, 0040 (XEN) ACPI: APIC BADD0400, 0072 (r3 ALASKA A M I 1072009 AMI 10013) (XEN) ACPI: SSDT BADD0478, 0102 (r1 AMICPU PROC 1 MSFT 3000001) (XEN) ACPI: MCFG BADD0580, 003C (r1 ALASKA A M I 1072009 MSFT 97) (XEN) ACPI: HPET BADD05C0, 0038 (r1 ALASKA A M I 1072009 AMI. 4) (XEN) ACPI: ASF! BADD05F8, 00A0 (r32 INTEL HCG 1 TFSM F4240) (XEN) System RAM: 8104MB (8299140kB) (XEN) No NUMA configuration found (XEN) Faking a node at 0000000000000000-000000023fe00000 (XEN) Domain heap initialised (XEN) found SMP MP-table at 000fcde0 (XEN) DMI 2.7 present. (XEN) Using APIC driver default (X000000000000000, using 32 (XEN) ACPI: wakeup_vec[bae0bf8c], vec_size[20] (XEN) ACPI: Local APIC address 0xfee00000 (XEN) ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled) (XEN) Processor #0 6:10 APIC version 21 (XEN) ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled) (XEN) Processor #2 6:10 APIC version 21 (XEN) ACPI: LAPIC (acpi_id[0x03] lapic_id[0x01] enabled) (XEN) Processor #1 6:10 APIC version 21 (XEN) ACPI: LAPIC (acpi_id[0x04] lapic_id[0x03] enabled) (XEN) Processor #3 6:10 APIC version 21 (XEN) ACPI: LAPIC_NMI (acpi_id[0xff] high edge lint[0x1]) (XEN) ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0]) (XEN) IOAPIC[0]: apic_id 0, version 32, address 0xfec00000, GSI 0-23 (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) (XEN) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) (XEN) ACPI: IRQ0 used by override. (XEN) ACPI: IRQ2 used by override. (XEN) ACPI: IRQ9 used by override. (XEN) Enabling APIC mode: Flat. Using 1 I/O APICs (XEN) ACPI: HPET id: 0x8086a701 base: 0xfed00000 (XEN) PCI: MCFG configuration 0: base e0000000 segment 0 buses 0 - 255 (XEN) PCI: Not using MMCONFIG. (XEN) Table is not found! (XEN) Using ACPI (MADT) for SMP configuration information (XEN) IRQ limits: 24 GSI, 760 MSI/MSI-X (XEN) Using scheduler: SMP Credit Scheduler (credit) (XEN) Detected 3093.009 MHz processor. (XEN) Initing memory sharing. (XEN) mce_intel.c:1162: MCA Capability: BCAST 1 SER 0 CMCirtualisation disa= bled (XEN) Enabled directed EOI with ioapic_ack_old on! (XEN) ENABLING IO-APIC IRQs (XEN) -> Using old ACK method (XEN) ..TIMER: vector=3D0xF0 apic1=3D0 pin1=3D2 apic2=3D-1 pin2=3D-1 (XEN) TSC deadline timer enabled (XEN) Platform timer is 14.318MHz HPET (XEN) Allocated console ring of 32 KiB. (XEN) VMX: Supported advanced features: (XEN) - APIC MMIO access virtualisation (XEN) - APIC TPR shadow (XEN) - Extended Page Tables (EPT) (XEN) - Virtual-Processor Identifiers (VPID) (XEN) - Virtual NMI (XEN) - MSR direct-access bitmap (XEN) - Unrestricted Guest (XEN) HVM: ASIDs enabled. (XEN) HVM: VMX enabled (XEN) HVM: Hardware Assisted Paging (HAP) detected (XEN) HVM: HAP page sizes: 4kB, 2MB (XEN) Brought up 4 CPUs (XEN) ACPI sleep modes: S3 (XEN) mcheck_poll: Machine check polling timer started. (XEN) *** LOADING DOMAIN 0 *** (XEN) elf_parse_binary: phdr: paddr=3D0x1000000 memsz=3D0x7a3000 (XEN) elf_parse_binary: phdr: paddr=3D0x1800000 memsz=3D0x850e8 (XEN)_binary: memory: 0x1000000 -> 0x1e41000 (XEN) elf_xen_parse_note: GUEST_OS =3D "linux" (XEN) elf_xen_parse_note: GUEST_VERSION =3D "2.6" (XEN) elf_xen_parse_note: XEN_VERSION =3D "xen-3.0" (XEN) elf_xen_parse_note: VIRT_BASE =3D 0xffffffff80000000 (XEN) elf_xen_parse_note: ENTRY =3D 0xffffffff8189a210 (XEN) elf_xen_parse_note: HYPERCALL_PAGE =3D 0xffffffff81001000 (XEN) elf_xen_parse_note: FEATURES =3D "!writable_page_tables|pae_pgdir_abo= ve_4gb" (XEN) elf_xen_parse_note: PAE_MODE =3D "yes" (XEN) elf_xen_parse_note: LOADER =3D "generic" (XEN) elf_xen_parse_note: unknown xen elf note (0xd) (XEN) elf_xen_parse_note: SUSPEND_CANCEL =3D 0x1 (XEN) elf_xen_parse_note: HV_START_LOW =3D 0xffff800000000000 (XEN) elf_xen_parse_note: PADDR_OFFSET =3D 0x0 (XEN) elf_xen_addr_calc_check: addresses: (XEN) virt_base =3D 0xffffffff80000000 (XEN) elf_paddr_offset =3D 0x0 (XEN) virt_offset =3D 0xffffffff80000000 (XEN) virt_kstart =3D 0xffffffff81000000 (XEN) virt_kend =3D 0xffffffff81e41000 (XEN) virt_entry =3D 0xffffffff8189a210 (XEN) p2m_base =3D 0xffffffffffffffff (XEN) Xen kernel: 64-bit, lsb, compat32 (XEN) Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1e41000 (XEN) PHYSICAL MEMORY ARRANGEMENT: (XEN) Dom0 alloc.: 0000000224000000->0000000228000000 (187430 pages to b= e allocated) (XEN) Init. ramdisk: 0000000231a26000->000000023fdffa00 (XEN) VIRTUAL MEMORY ARRANGEMENT: (XEN) Loaded kernel: ffffffff81000000->ffffffff81e41000 (XEN) Init. ramdisk: ffffffff81e41000->ffffffff9021aa00 (XEN) Phys-Mach map: ffffffff9021b000->ffffffff9041b000 (XEN) Start info: ffffffff9041b000->ffffffff9041b4b4 (XEN) Page tables: ffffffff9041c000->ffffffff904a3000 (XEN) Boot stack: ffffffff904a3000->ffffffff904a4000 (XEN) TOTAL: ffffffff80000000->ffffffff90800000 (XEN) ENTRY ADDRESS: ffffffff8189a210 (XEN) Dom0 has maximum 2 VCPUs (XEN) elf_load_binary: phdr 0 at 0xffffffff81000000 -> 0xffffffff817a3000 (XEN) elf_load_binary: phdr 1 at 0xffffffff81800000 -> 0xffffffff818850e8 (XEN) elf_load_binary: phdr 2 at 0xffffffff81886000 -> 0xffffffff81899280 (XEN) elf_load_binary: phdr 3 at 0xffffffff8189a000 -> 0xffffffff8193e000 (XEN) Scrubbing Free RAM: .................................................= =2E...................done. (XEN) Xen trace buffers: disabled (XEN) Std. Loglevel: All (XEN) Guest Loglevel: All (XEN) Xen is relinquishing VGA co cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 3.5.0-rc2upstream-00011-g3dccb5f-dirty (konrad= @build.dumpdata.com) (gcc version 4.4.4 20100503 (Red Hat 4.4.4-2) (GCC) ) = #1 SMP Sat Jun 9 10:49:11 EDT 2012 [ 0.000000] Command line: earlyprintk=3Dxen debug nofb console=3Dtty con= sole=3Dhvc0 loglevel=3D10 [ 0.000000] Freeing 9e-100 pfn range: 98 pages freed [ 0.000000] Freeing 20000-20200 pfn range: 512 pages freed [ 0.000000] Released 610 pages of unused memory [ 0.000000] Set 283999 page(s) to 1-1 mapping [ 0.000000] Populating 40200-40462 pfn range: 610 pages added [ 0.000000] e820: BIOS-provided physical RAM map: [ 0.000000] Xen: [mem 0x0000000000000000-0x000000000009dfff] usable [ 0.000000] Xen: [mem 0x000000000009ec00-0x00000000000fffff] reserved [ 0.000000] Xen: [mem 0x0000000000100000-0x000000001fffffff] usable [ 0.000000] Xen: [mem 0x0000000020000000-0x00000000201fffff] reserved [ 0.000000] Xen: [mem 0x0000000020200000-0x000000003fffffff] usable [ 0.000000] Xen: [mem 0x0000000040000000-0x00000000401fffff] reserved [ 0.000000] Xen: [mem 0x0000000040200000-0x0000000080461fff] usable [ 0.000000] Xen: [mem 0x0000000080462000-0x00000000bad7ffff] unusable [ 0.000000] Xen: [mem 0x00000000bad80000-0x00000000badc8fff] ACPI NVS [ 0.000000] Xen: [mem 0x00000000badc9000-0x00000000badd0fff] ACPI data [ 0.000000] Xen: [mem 0x00000000badd1000-0x00000000badf3fff] reserved [ 0.000000] Xen: [mem 0x00000000badf4000-0x00000000badf5fff] unusable [ 0.000000] Xen: [mem 0x00000000badf6000-0x00000000bae05fff] reserved [ 0.000000] Xen: [mem 0x00000000bae06000-0x00000000bae13fff] ACPI NVS [ 0.000000] Xen: [mem 0x00000000bae14000-0x00000000bae3bfff] reserved [ 0.000000] Xen: [mem 0x00000000bae3c000-0x00000000bae7efff] ACPI NVS [ 0.000000] Xen: [mem 0x00000000bae7f000-0x00000000baffffff] unusable [ 0.000000] Xen: [mem 0x00000000bb800000-0x00000000bf9fffff] reserved [ 0.000000] Xen: [mem 0x00000000fec00000-0x00000000fec00fff] reserved [ 0.000000] Xen: [mem 0x00000000fed1c000-0x00000000fed3ffff] reserved [ 0.000000] Xen: [mem 0x00000000fee00000-0x00000000fee00fff] reserved [ 0.000000] Xen: [mem 0x00000000ff000000-0x00000000ffffffff] reserved [ 0.000000] Xen: [mem 0x0000000100000000-0x000000023fdfffff] unusable [ 0.000000] bootconsole [xenboot0] enabled [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] DMI 2.7 present. [ 0.000000] DMI: MSI MS-7680/H61M-P23 (MS-7680), BIOS V17.0 03/14/2011 [ 0.000000] e820: update [mem 0x00000000-0x0000ffff] usable =3D=3D> rese= rved [ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable [ 0.000000] No AGP bridge found [ 0.000000] e820: last_pfn =3D 0x80462 max_arch_pfn =3D 0x400000000 [ 0.000000] found SMP MP-table at [mem 0x000fcde0-0x000fcdef] mapped at = [ffff8800000fcde0] [ 0.000000] initial memory mapped: [mem 0x00000000-0x1021afff] [ 0.000000] Base memory trampoline at [ffff880000098000] 98000 size 24576 [ 0.000000] init_memory_mapping: [mem 0x00000000-0x80461fff] [ 0.000000] [mem 0x00000000-0x80461fff] page 4k [ 0.000000] kernel direct mapping tables up to 0x80461fff @ [mem 0x00bf9= 000-0x00ffffff] (XEN) mm.c:659:d0 Could not get page ref for pfn fffffffffffff (XEN) mm.c:3460:d0 Could not get page for normal update (XEN) mm.c:659:d0 Could not get page ref for pfn fffffffffffff (XEN) mm.c:3460:d0 Could not get page for normal update (XEN) mm.c:659:d0 Could not get page ref for pfn fffffffffffff (XEN) mm.c:3460:d0 Could not get page for normal update (XEN) mm.c:659:d0 Could not get page ref for pfn fffffffffffff (XEN) mm.c:3460:d0 Could not get page for normal update (XEN) mm.c:659:d0 Could not get page ref for pfn fffffffffffff (XEN) mm.c:3460:d0 Could not get page for normal update (XEN) mm.c:659:d0 Could not get page ref for pfn fffffffffffff _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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