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Re: [Xen-devel] EFI GetNextVariableName hang/crash



On Thu, Sep 24, 2015 at 04:26:18PM +0100, Ross Lagerwall wrote:
> On 09/24/2015 03:53 PM, Marek Marczykowski-GÃrecki wrote:
> >===== The console output from GetNextVariableName crash:
> >
> >(XEN) Xen version 4.5.2-pre (user@) (gcc (GCC) 4.9.2 20150212 (Red Hat 
> >4.9.2-6)) debug=n Thu Sep 24 04:46:33 CEST 2015
> >(XEN) Latest ChangeSet: Thu Sep 24 03:00:24 2015 +0200 git:708ee2d
> >(XEN) Bootloader: EFI
> >(XEN) Command line: loglvl=all console=com1 com1=115200n1 conswitch=ax 
> >efi=attr=uc
> >(XEN) Video information:
> >(XEN)  VGA is graphics mode 800x600, 32 bpp
> >(XEN) Disc information:
> >(XEN)  Found 0 MBR signatures
> >(XEN)  Found 0 EDD information structures
> >(XEN) WARNING: MTRRs do not cover all of memory.
> >(XEN) Truncating RAM from 17530880kB to 3325952kB
> >(XEN) EFI RAM map:
> >(XEN)  0000000000000000 - 0000000000008000 (reserved)
> >(XEN)  0000000000008000 - 000000000004e000 (usable)
> >(XEN)  000000000004e000 - 00000000000a0000 (reserved)
> >(XEN)  0000000000100000 - 0000000020000000 (usable)
> >(XEN)  0000000020000000 - 0000000020200000 (reserved)
> >(XEN)  0000000020200000 - 0000000040000000 (usable)
> >(XEN)  0000000040000000 - 0000000040200000 (reserved)
> >(XEN)  0000000040200000 - 00000000c6b12000 (usable)
> >(XEN)  00000000c6b12000 - 00000000c6b6a000 (reserved)
> >(XEN)  00000000c6b6a000 - 00000000c6be1000 (usable)
> >(XEN)  00000000c6be1000 - 00000000c6c08000 (reserved)
> >(XEN)  00000000c6c08000 - 00000000c6c0c000 (usable)
> >(XEN)  00000000c6c0c000 - 00000000c722d000 (reserved)
> >(XEN)  00000000c722d000 - 00000000c7236000 (usable)
> >(XEN)  00000000c7236000 - 00000000ca9e7000 (reserved)
> >(XEN)  00000000ca9e7000 - 00000000cabe7000 (ACPI NVS)
> >(XEN)  00000000cabe7000 - 00000000cabff000 (ACPI data)
> >(XEN)  00000000cabff000 - 00000000cac00000 (reserved)
> >(XEN)  00000000cb800000 - 00000000cfa00000 (reserved)
> >(XEN)  00000000fed1c000 - 00000000fed20000 (reserved)
> >(XEN)  00000000ffc00000 - 00000000ffc20000 (reserved)
> >(XEN)  0000000100000000 - 000000042e000000 (unusable)
> >(XEN) System RAM: 3174MB (3251056kB)
> >(XEN) ACPI: RSDP CABFEF98, 0024 (r2 DELL  )
> >(XEN) ACPI: XSDT CABFDE18, 007C (r1 DELL    CBX3     6222004 MSFT    10013)
> >(XEN) ACPI: FACP CAB77D98, 00F4 (r4 DELL    CBX3     6222004 MSFT    10013)
> >(XEN) ACPI: DSDT CAB45018, 885D (r2 INT430 SYSFexxx     1001 INTL 20090903)
> >(XEN) ACPI: FACS CABD4D40, 0040
> >(XEN) ACPI: APIC CABFCF18, 00CC (r2 DELL    CBX3     6222004 MSFT    10013)
> >(XEN) ACPI: TCPA CABD5D18, 0032 (r2                        0             0)
> >(XEN) ACPI: SSDT CAB78A98, 02F9 (r1 DELLTP      TPM     3000 INTL 20090903)
> >(XEN) ACPI: MCFG CABD5C98, 003C (r1 DELL   SNDYBRDG  6222004 MSFT       97)
> >(XEN) ACPI: HPET CABD5C18, 0038 (r1 A M I   PCHHPET  6222004 AMI.        3)
> >(XEN) ACPI: BOOT CABD5B98, 0028 (r1 DELL   CBX3      6222004 AMI     10013)
> >(XEN) ACPI: SSDT CAB5C018, 0804 (r1  PmRef  Cpu0Ist     3000 INTL 20090903)
> >(XEN) ACPI: SSDT CAB5B018, 0996 (r1  PmRef    CpuPm     3000 INTL 20090903)
> >(XEN) ACPI: DMAR CAB77C18, 00E8 (r1 INTEL      SNB         1 INTL        1)
> >(XEN) ACPI: SLIC CAB65C18, 0176 (r3 DELL    CBX3     6222004 MSFT    10013)
> >(XEN) No NUMA configuration found
> >(XEN) Faking a node at 0000000000000000-00000000c7236000
> >(XEN) Domain heap initialised
> >(XEN) SMBIOS 2.6 present.
> >(XEN) DMI 2.6 present.
> >(XEN) Using APIC driver default
> >(XEN) ACPI: PM-Timer IO Port: 0x408
> >(XEN) ACPI: SLEEP INFO: pm1x_cnt[1:404,1:0], pm1x_evt[1:400,1:0]
> >(XEN) ACPI: 32/64X FACS address mismatch in FADT - 
> >cabd4e40/00000000cabd4d40, using 32
> >(XEN) ACPI:             wakeup_vec[cabd4e4c], 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 (acpi_id[0x05] lapic_id[0x04] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x06] lapic_id[0x05] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x07] lapic_id[0x06] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x08] lapic_id[0x07] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x09] lapic_id[0x08] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x0a] lapic_id[0x09] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x0b] lapic_id[0x0a] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x0c] lapic_id[0x0b] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x0d] lapic_id[0x0c] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x0e] lapic_id[0x0d] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x0f] lapic_id[0x0e] disabled)
> >(XEN) ACPI: LAPIC (acpi_id[0x10] lapic_id[0x0f] disabled)
> >(XEN) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
> >(XEN) IOAPIC[0]: apic_id 2, 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) ERST table was not found
> >(XEN) Using ACPI (MADT) for SMP configuration information
> >(XEN) SMP: Allowing 16 CPUs (12 hotplug CPUs)
> >(XEN) IRQ limits: 24 GSI, 760 MSI/MSI-X
> >(XEN) Switched to APIC driver x2apic_cluster.
> >(XEN) Using scheduler: SMP Credit Scheduler (credit)
> >(XEN) Detected 2494.407 MHz processor.
> >(XEN) EFI memory map: (mapping BootServices)
> >(XEN)  0000000000000-0000000007fff type=3 attr=000000000000000f
> >(XEN)  0000000008000-000000004afff type=7 attr=000000000000000f
> >(XEN)  000000004b000-000000004dfff type=2 attr=000000000000000f
> >(XEN)  000000004e000-000000005ffff type=4 attr=000000000000000f
> >(XEN)  0000000060000-000000009ffff type=3 attr=000000000000000f
> >(XEN)  0000000100000-000001fffffff type=7 attr=000000000000000f
> >(XEN)  0000020000000-00000201fffff type=0 attr=000000000000000f
> >(XEN)  0000020200000-000003fffffff type=7 attr=000000000000000f
> >(XEN)  0000040000000-00000401fffff type=0 attr=000000000000000f
> >(XEN)  0000040200000-0000091fa6fff type=7 attr=000000000000000f
> >(XEN)  0000091fa7000-0000093bdbfff type=2 attr=000000000000000f
> >(XEN)  0000093bdc000-0000094fdffff type=1 attr=000000000000000f
> >(XEN)  0000094fe0000-00000c694afff type=2 attr=000000000000000f
> >(XEN)  00000c694b000-00000c6a2dfff type=1 attr=000000000000000f
> >(XEN)  00000c6a2e000-00000c6b11fff type=7 attr=000000000000000f
> >(XEN)  00000c6b12000-00000c6b69fff type=4 attr=000000000000000f
> >(XEN)  00000c6b6a000-00000c6be0fff type=7 attr=000000000000000f
> >(XEN)  00000c6be1000-00000c6c07fff type=4 attr=000000000000000f
> >(XEN)  00000c6c08000-00000c6c0bfff type=7 attr=000000000000000f
> >(XEN)  00000c6c0c000-00000c6c30fff type=4 attr=000000000000000f
> >(XEN)  00000c6c31000-00000c6c31fff type=3 attr=000000000000000f
> >(XEN)  00000c6c32000-00000c6c32fff type=4 attr=000000000000000f
> >(XEN)  00000c6c33000-00000c6c33fff type=3 attr=000000000000000f
> >(XEN)  00000c6c34000-00000c6c4ffff type=4 attr=000000000000000f
> >(XEN)  00000c6c50000-00000c6cc1fff type=3 attr=000000000000000f
> >(XEN)  00000c6cc2000-00000c6cd7fff type=4 attr=000000000000000f
> >(XEN)  00000c6cd8000-00000c6cdafff type=3 attr=000000000000000f
> >(XEN)  00000c6cdb000-00000c6ce2fff type=4 attr=000000000000000f
> >(XEN)  00000c6ce3000-00000c6ce8fff type=3 attr=000000000000000f
> >(XEN)  00000c6ce9000-00000c6ceafff type=4 attr=000000000000000f
> >(XEN)  00000c6ceb000-00000c6cebfff type=3 attr=000000000000000f
> >(XEN)  00000c6cec000-00000c6cedfff type=4 attr=000000000000000f
> >(XEN)  00000c6cee000-00000c6ceefff type=3 attr=000000000000000f
> >(XEN)  00000c6cef000-00000c6ceffff type=4 attr=000000000000000f
> >(XEN)  00000c6cf0000-00000c6cf0fff type=3 attr=000000000000000f
> >(XEN)  00000c6cf1000-00000c6cf4fff type=4 attr=000000000000000f
> >(XEN)  00000c6cf5000-00000c6cf6fff type=3 attr=000000000000000f
> >(XEN)  00000c6cf7000-00000c6cf7fff type=4 attr=000000000000000f
> >(XEN)  00000c6cf8000-00000c6cf8fff type=3 attr=000000000000000f
> >(XEN)  00000c6cf9000-00000c6cfafff type=4 attr=000000000000000f
> >(XEN)  00000c6cfb000-00000c6cfbfff type=3 attr=000000000000000f
> >(XEN)  00000c6cfc000-00000c6cfefff type=4 attr=000000000000000f
> >(XEN)  00000c6cff000-00000c6cfffff type=3 attr=000000000000000f
> >(XEN)  00000c6d00000-00000c6d00fff type=4 attr=000000000000000f
> >(XEN)  00000c6d01000-00000c6d01fff type=3 attr=000000000000000f
> >(XEN)  00000c6d02000-00000c6d03fff type=4 attr=000000000000000f
> >(XEN)  00000c6d04000-00000c6d04fff type=3 attr=000000000000000f
> >(XEN)  00000c6d05000-00000c6d06fff type=4 attr=000000000000000f
> >(XEN)  00000c6d07000-00000c6d07fff type=3 attr=000000000000000f
> >(XEN)  00000c6d08000-00000c6d08fff type=4 attr=000000000000000f
> >(XEN)  00000c6d09000-00000c6d09fff type=3 attr=000000000000000f
> >(XEN)  00000c6d0a000-00000c6d0bfff type=4 attr=000000000000000f
> >(XEN)  00000c6d0c000-00000c6d0cfff type=3 attr=000000000000000f
> >(XEN)  00000c6d0d000-00000c6d10fff type=4 attr=000000000000000f
> >(XEN)  00000c6d11000-00000c6d13fff type=3 attr=000000000000000f
> >(XEN)  00000c6d14000-00000c6d17fff type=4 attr=000000000000000f
> >(XEN)  00000c6d18000-00000c6d19fff type=3 attr=000000000000000f
> >(XEN)  00000c6d1a000-00000c6d1efff type=4 attr=000000000000000f
> >(XEN)  00000c6d1f000-00000c6d22fff type=3 attr=000000000000000f
> >(XEN)  00000c6d23000-00000c6d24fff type=4 attr=000000000000000f
> >(XEN)  00000c6d25000-00000c6d26fff type=3 attr=000000000000000f
> >(XEN)  00000c6d27000-00000c6d28fff type=4 attr=000000000000000f
> >(XEN)  00000c6d29000-00000c6d2cfff type=3 attr=000000000000000f
> >(XEN)  00000c6d2d000-00000c6da5fff type=4 attr=000000000000000f
> >(XEN)  00000c6da6000-00000c6da6fff type=3 attr=000000000000000f
> >(XEN)  00000c6da7000-00000c6da8fff type=4 attr=000000000000000f
> >(XEN)  00000c6da9000-00000c6daafff type=3 attr=000000000000000f
> >(XEN)  00000c6dab000-00000c6db0fff type=4 attr=000000000000000f
> >(XEN)  00000c6db1000-00000c6db5fff type=3 attr=000000000000000f
> >(XEN)  00000c6db6000-00000c6dc5fff type=4 attr=000000000000000f
> >(XEN)  00000c6dc6000-00000c6dc6fff type=3 attr=000000000000000f
> >(XEN)  00000c6dc7000-00000c6dc9fff type=4 attr=000000000000000f
> >(XEN)  00000c6dca000-00000c6dcbfff type=3 attr=000000000000000f
> >(XEN)  00000c6dcc000-00000c6dcdfff type=4 attr=000000000000000f
> >(XEN)  00000c6dce000-00000c6dcffff type=3 attr=000000000000000f
> >(XEN)  00000c6dd0000-00000c6e77fff type=4 attr=000000000000000f
> >(XEN)  00000c6e78000-00000c6e84fff type=3 attr=000000000000000f
> >(XEN)  00000c6e85000-00000c7018fff type=4 attr=000000000000000f
> >(XEN)  00000c7019000-00000c702bfff type=3 attr=000000000000000f
> >(XEN)  00000c702c000-00000c7147fff type=4 attr=000000000000000f
> >(XEN)  00000c7148000-00000c71b8fff type=3 attr=000000000000000f
> >(XEN)  00000c71b9000-00000c722cfff type=4 attr=000000000000000f
> >(XEN)  00000c722d000-00000c7234fff type=7 attr=000000000000000f
> >(XEN)  00000c7235000-00000c7235fff type=2 attr=000000000000000f
> >(XEN)  00000c7236000-00000c9565fff type=4 attr=000000000000000f
> >(XEN)  00000c9566000-00000ca53afff type=3 attr=000000000000000f
> >(XEN)  00000ca53b000-00000ca53dfff type=4 attr=000000000000000f
> >(XEN)  00000ca53e000-00000ca547fff type=3 attr=000000000000000f
> >(XEN)  00000ca548000-00000ca556fff type=4 attr=000000000000000f
> >(XEN)  00000ca557000-00000ca61efff type=3 attr=000000000000000f
> >(XEN)  00000ca61f000-00000ca662fff type=0 attr=000000000000000f
> >(XEN)  00000ca663000-00000ca952fff type=3 attr=000000000000000f
> >(XEN)  00000ca953000-00000ca956fff type=5 attr=800000000000000f
> >(XEN)  00000ca957000-00000ca966fff type=6 attr=800000000000000f
> >(XEN)  00000ca967000-00000ca98cfff type=5 attr=800000000000000f
> >(XEN)  00000ca98d000-00000ca992fff type=6 attr=800000000000000f
> >(XEN)  00000ca993000-00000ca9a6fff type=6 attr=800000000000000f
> >(XEN)  00000ca9a7000-00000ca9a8fff type=6 attr=800000000000000f
> >(XEN)  00000ca9a9000-00000ca9b6fff type=6 attr=800000000000000f
> >(XEN)  00000ca9b7000-00000ca9c2fff type=0 attr=000000000000000f
> >(XEN)  00000ca9c3000-00000ca9e6fff type=0 attr=000000000000000f
> >(XEN)  00000ca9e7000-00000caacdfff type=10 attr=000000000000000f
> >(XEN)  00000caace000-00000cab4dfff type=10 attr=000000000000000f
> >(XEN)  00000cab4e000-00000cab56fff type=10 attr=000000000000000f
> >(XEN)  00000cab57000-00000cab5cfff type=10 attr=000000000000000f
> >(XEN)  00000cab5d000-00000cab5efff type=10 attr=000000000000000f
> >(XEN)  00000cab5f000-00000cabe6fff type=10 attr=000000000000000f
> >(XEN)  00000cabe7000-00000cabfbfff type=9 attr=000000000000000f
> >(XEN)  00000cabfc000-00000cabfefff type=9 attr=000000000000000f
> >(XEN)  00000cabff000-00000cabfffff type=4 attr=000000000000000f
> >(XEN)  0000100000000-000042dffffff type=7 attr=000000000000000f
> >(XEN)  00000cb800000-00000cf9fffff type=0 attr=8000000000000000
> >(XEN) Unknown cachability for MFNs 0xcb800-0xcf9ff, assuming UC
> >(XEN)  00000fed1c000-00000fed1ffff type=11 attr=8000000000000000
> >(XEN) Unknown cachability for MFNs 0xfed1c-0xfed1f, assuming UC
> >(XEN)  00000ffc00000-00000ffc1ffff type=11 attr=8000000000000000
> >(XEN) Unknown cachability for MFNs 0xffc00-0xffc1f, assuming UC

(...)

> >(XEN) ----[ Xen-4.5.2-pre  x86_64  debug=n  Not tainted ]----
> >(XEN) CPU:    3
> >(XEN) RIP:    e008:[<00000000ca9e6f98>] 00000000ca9e6f98
> >(XEN) RFLAGS: 0000000000010286   CONTEXT: hypervisor (d0v1)
> >(XEN) rax: 00000000ca7c6440   rbx: 00000000ca9ab078   rcx: 00000000ca7c6440
> >(XEN) rdx: ffff830093cdfcc8   rsi: 0000000000000001   rdi: 00000000ca982540
> >(XEN) rbp: 0000000000000000   rsp: ffff830093cdfc70   r8:  0000000000007c00
> >(XEN) r9:  0000000000000400   r10: ffff82d080236d30   r11: 0000000000000246
> >(XEN) r12: ffff830094003680   r13: 0000000000000000   r14: 0000000000000000
> >(XEN) r15: ffff830093cdfdb8   cr0: 0000000080050033   cr4: 00000000000426f0
> >(XEN) cr3: 0000000093ce0000   cr2: 00000000ca9e6f98
> >(XEN) ds: 0000   es: 0000   fs: 0000   gs: 0000   ss: e010   cs: e008
> >(XEN) Xen stack trace from rsp=ffff830093cdfc70:
> >(XEN)    00000000ca96c45a 0000000000000000 0000000000000000 0000000000000000
> >(XEN)    0000000000000000 ffff830093cdfcf0 ffff830093cdfe78 0000000000000000
> >(XEN)    00000000ca9816d8 00000000ca9ab018 ffff8300c6a86088 ffff830093ca7eb0
> >(XEN)    ffff82d08011f7a7 0000000000000000 000000009dc0e000 ffff830094003680
> >(XEN)    8000000000000013 ffff830093cdfe78 00000000ca9819c1 0000000000000004
> >(XEN)    ffff830093cdfdb8 ffff830094003680 ffff830093cdfe78 0000000000007c00
> >(XEN)    0000000000000400 0000000000000000 ffff830000000005 ffff830093cdfe78
> >(XEN)    00000000ca98138b ffff830093cdfe58 ffff8800a120fc98 ffff830093cdfe58
> >(XEN)    ffff830094003680 0000000093ce0000 ffff82d08022a66f ffff830093cdfe58
> >(XEN)    00000000ffffffa1 0000000000042670 ffff82d08022a5ed ffff82d080498880
> >(XEN)    0000000000000206 0000000000000400 ffff82d08027b780 0000000000000000
> >(XEN)    ffff830093cdff18 ffff8800a120fc98 ffff830093cdfe58 ffff830093cd8000
> >(XEN)    ffff82d08046f880 0000000000000000 ffff82d080166ef4 0000000000000009
> >(XEN)    ffff8300940a0000 0000000000000009 ffff830093ca4060 ffff82d080498880
> >(XEN)    0000000000000003 ffff82d0804829c0 0000000000000206 0000000000000003
> >(XEN)    0300000100000031 0000000000000008 0000000000000000 0000000000000400
> >(XEN)    ffff8800a0631c00 0000000000000000 0000000000000000 0000000000000000
> >(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
> >(XEN)    0000000000000000 0000000000000000 0000000000000000 0000000000000000
> >(XEN)    0000000000000000 000000000000e030 ffff830093ca4000 ffff8800a120fd28
> >(XEN) Xen call trace:
> >(XEN)    [<00000000ca9e6f98>] 00000000ca9e6f98
> >(XEN)    [<ffff82d08011f7a7>] csched_vcpu_wake+0x1b7/0x4b0
> >(XEN)    [<ffff82d08022a66f>] efi_runtime_call+0x76f/0x870
> >(XEN)    [<ffff82d08022a5ed>] efi_runtime_call+0x6ed/0x870
> >(XEN)    [<ffff82d080166ef4>] do_platform_op+0x504/0x1300
> >(XEN)    [<ffff82d080225e29>] syscall_enter+0xa9/0xae
> >(XEN)
> >(XEN) Pagetable walk from 00000000ca9e6f98:
> >(XEN)  L4[0x000] = 00000000c6a9f063 ffffffffffffffff
> >(XEN)  L3[0x003] = 0000000093e74063 ffffffffffffffff
> >(XEN)  L2[0x054] = 00000000c6c0b063 ffffffffffffffff
> >(XEN)  L1[0x1e6] = 0000000000000000 ffffffffffffffff
> >[   32.312081] a(XEN)
> >(XEN) ****************************************
> >(XEN) Panic on CPU 3:
> >(XEN) FATAL PAGE FAULT
> >(XEN) [error_code=0010]
> >(XEN) Faulting linear address: 00000000ca9e6f98
> >(XEN) ****************************************
> >(XEN)
> >(XEN) Reboot in five seconds...
> >
> 
> The faulting address falls within an address range which the firmware has
> marked as EfiReservedMemoryType:
> 00000ca9c3000-00000ca9e6fff type=0 attr=000000000000000f
> which Xen does not map.
> 
> XenServer has a patch specifically for this issue (which seems to happen on
> Dell machines):
> https://github.com/xenserver/xen-4.6.pg/blob/master/master/0002-efi-Ensure-incorrectly-typed-runtime-services-get-ma.patch

Thanks for the response. I've tried something like this already and it
doesn't work. 
With ExitBootServices disabled it still crashes; with ExitBootServices
enabled it still hangs at efivars.
Regarding the crash I'm almost sure that the address is the same. I've
tried to add that mapping also to the other mapping code in
efi_init_memory ("Insert non-RAM runtime mapping inside the direct
map." loop), but it still doesn't help.
Unfortunately I can't provide the exact message after that changes,
because I've forgot to start logging in minicom. And after few more
tries my machine doesn't start anymore :/

-- 
Best Regards,
Marek Marczykowski-GÃrecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

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