From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Tripathy Subject: Re: Can't see more than 3.5GB of RAM Date: Thu, 23 Aug 2012 01:11:43 +0100 Message-ID: <5035753F.5080109@abpni.co.uk> References: <50356E43.3030208@abpni.co.uk> <50356FB1.2070904@abpni.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <50356FB1.2070904@abpni.co.uk> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org On 23/08/2012 00:48, Jonathan Tripathy wrote: > > Hi Everyone, > > CC: Xen-users > > I am running Ubuntu 12.04 x86_64. My machine has a supermicro > motherboard X9SCI-LN4F with 32GB of RAM installed. To get Xen, I simply > did apt-get install xen-hypervisor which gives me Ubuntu's 4.1 xen > version. > > For some reason, Xen can't see any more than about 3.5GB of RAM. I can > confirm this by xentop as well as xm info. I am definately running a > 64-bit Dom0 kernel as when I boot into it without Xen, I can see all > 32GB of RAM by running "free -m". > > Has anybody come across this issue before? For what it's worth, I'm > booting my system using UEFI - could that have something to do with it? > > Any help is very much appreciated > > Thanks > > Here is the output of xm dmesg: > > (XEN) Xen version 4.1.2 (Ubuntu 4.1.2-2ubuntu2.2) > (stefan.bader@canonical.com) (gcc version 4.6.3 (Ubuntu/Linaro > 4.6.3-1ubuntu5) ) Sat Jul 21 09:01:19 UTC 2012 > (XEN) Bootloader: GRUB 1.99-21ubuntu3.1 > (XEN) Command line: placeholder > (XEN) Video information: > (XEN) VGA is text mode 80x25, font 8x16 > (XEN) VBE/DDC methods: V2; EDID transfer time: 1 seconds > (XEN) Disc information: > (XEN) Found 0 MBR signatures > (XEN) Found 0 EDD information structures > (XEN) Xen-e801 RAM map: > (XEN) 0000000000000000 - 0000000000099c00 (usable) > (XEN) 0000000000100000 - 00000000ddd00000 (usable) > (XEN) System RAM: 3548MB (3633764kB) > (XEN) ACPI: RSDP 000FDF00, 0024 (r2 SUPERM) > (XEN) ACPI: XSDT DDF9E098, 00AC (r1 SUPERM SMCI--MB 1 AMI > 10013) > (XEN) ACPI: FACP DDFA90D8, 00F4 (r4 SUPERM SMCI--MB 1 AMI > 10013) > (XEN) ACPI: DSDT DDF9E1D8, AEFA (r2 SUPERM SMCI--MB 0 INTL > 20051117) > (XEN) ACPI: FACS DDFBDF80, 0040 > (XEN) ACPI: APIC DDFA91D0, 0092 (r3 SUPERM SMCI--MB 1 AMI > 10013) > (XEN) ACPI: FPDT DDFA9268, 0044 (r1 SUPERM SMCI--MB 1 AMI > 10013) > (XEN) ACPI: MCFG DDFA92B0, 003C (r1 SUPERM SMCI--MB 1 > MSFT 97) > (XEN) ACPI: PRAD DDFA92F0, 00BE (r2 PRADID PRADTID 1 MSFT > 3000001) > (XEN) ACPI: HPET DDFA93B0, 0038 (r1 SUPERM SMCI--MB 1 > AMI. 5) > (XEN) ACPI: SSDT DDFA93E8, 036D (r1 SataRe SataTabl 1000 INTL > 20091112) > (XEN) ACPI: SPMI DDFA9758, 0040 (r5 A M I OEMSPMI 0 > AMI. 0) > (XEN) ACPI: SSDT DDFA9798, 09A4 (r1 PmRef Cpu0Ist 3000 INTL > 20051117) > (XEN) ACPI: SSDT DDFAA140, 0A88 (r1 PmRef CpuPm 3000 INTL > 20051117) > (XEN) ACPI: DMAR DDFAABC8, 0078 (r1 INTEL SNB 1 > INTL 1) > (XEN) ACPI: BGRT DDFAAC40, 0038 (r0 SUPERM SMCI--MB 1 AMI > 10013) > (XEN) ACPI: SPCR DDFAAC78, 0050 (r1 A M I APTIO4 1 > AMI. 5) > (XEN) ACPI: EINJ DDFAACC8, 0130 (r1 AMI AMI EINJ 0 0) > (XEN) ACPI: ERST DDFAADF8, 0210 (r1 AMIER AMI ERST 0 0) > (XEN) ACPI: HEST DDFAB008, 00A8 (r1 AMI AMI HEST 0 0) > (XEN) ACPI: BERT DDFAB0B0, 0030 (r1 AMI AMI BERT 0 0) > (XEN) Domain heap initialised > (XEN) ACPI: 32/64X FACS address mismatch in FADT - > ddfbdf80/0000000000000000, using 32 > (XEN) Processor #0 7:10 APIC version 21 > (XEN) Processor #2 7:10 APIC version 21 > (XEN) Processor #4 7:10 APIC version 21 > (XEN) Processor #6 7:10 APIC version 21 > (XEN) Processor #1 7:10 APIC version 21 > (XEN) Processor #3 7:10 APIC version 21 > (XEN) Processor #5 7:10 APIC version 21 > (XEN) Processor #7 7:10 APIC version 21 > (XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23 > (XEN) Enabling APIC mode: Flat. Using 1 I/O APICs > (XEN) [VT-D]dmar.c:528: RMRR address range not in reserved memory > base = dde16000 end = dde32fff; iommu_inclusive_mapping=1 parameter > may be needed. > (XEN) ERST table is invalid > (XEN) Switched to APIC driver x2apic_cluster. > (XEN) Using scheduler: SMP Credit Scheduler (credit) > (XEN) Detected 3292.644 MHz processor. > (XEN) Initing memory sharing. > (XEN) Intel VT-d Snoop Control enabled. > (XEN) Intel VT-d Dom0 DMA Passthrough not enabled. > (XEN) Intel VT-d Queued Invalidation enabled. > (XEN) Intel VT-d Interrupt Remapping enabled. > (XEN) Intel VT-d Shared EPT tables not enabled. > (XEN) I/O virtualisation enabled > (XEN) - Dom0 mode: Relaxed > (XEN) Enabled directed EOI with ioapic_ack_old on! > (XEN) ENABLING IO-APIC IRQs > (XEN) -> Using old ACK method > (XEN) Platform timer is 14.318MHz HPET > (XEN) Allocated console ring of 16 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) EPT supports 2MB super page. > (XEN) HVM: ASIDs enabled. > (XEN) HVM: VMX enabled > (XEN) HVM: Hardware Assisted Paging detected. > (XEN) Brought up 8 CPUs > (XEN) *** LOADING DOMAIN 0 *** > (XEN) Xen kernel: 64-bit, lsb, compat32 > (XEN) Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x205d000 > (XEN) PHYSICAL MEMORY ARRANGEMENT: > (XEN) Dom0 alloc.: 00000000bc000000->00000000c0000000 (744642 pages > to be allocated) > (XEN) Init. ramdisk: 00000000c4b6a000->00000000dd7ffe00 > (XEN) VIRTUAL MEMORY ARRANGEMENT: > (XEN) Loaded kernel: ffffffff81000000->ffffffff8205d000 > (XEN) Init. ramdisk: ffffffff8205d000->ffffffff9acf2e00 > (XEN) Phys-Mach map: ffffffff9acf3000->ffffffff9b387ac0 > (XEN) Start info: ffffffff9b388000->ffffffff9b3884b4 > (XEN) Page tables: ffffffff9b389000->ffffffff9b468000 > (XEN) Boot stack: ffffffff9b468000->ffffffff9b469000 > (XEN) TOTAL: ffffffff80000000->ffffffff9b800000 > (XEN) ENTRY ADDRESS: ffffffff81cfd200 > (XEN) Dom0 has maximum 8 VCPUs > (XEN) Scrubbing Free RAM: .done. > (XEN) Xen trace buffers: disabled > (XEN) Std. Loglevel: Errors and warnings > (XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings) > (XEN) Xen is relinquishing VGA console. > (XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch > input to Xen) > (XEN) Freed 220kB init memory. > (XEN) physdev.c:155: dom0: wrong map_pirq type 3 > > > Hi Everyone, You will note that someone has posted a bug report here with the issue I'm facing: https://bugzilla.redhat.com/show_bug.cgi?id=819235 Also, someone has create a patch (for 4.0.1): http://serverfault.com/questions/342109/xen-only-sees-512mb-of-system-ram-should-be-8gb-uefi-boot Could someone here please shed light on this issue? Is there an official patch in the works? Thanks