Hallo,
I have to try install xen-4 on dell pe2850 (Raid: perc4).
booterror: megaraid Couldn't register IRQ 7!
But megaraid works with linux-2.6.18.8.
Enclosed my tests:
1. Compile xen-4.0 + linux-2.6.32 snapshot (Jeremy) from [8] (test 1).
 cd /usr/src/xen-b29254c
 make all modules modules_install 2>&1 | tee make.out
 cp -p ./arch/x86/boot/bzImage /boot/vmlinux-2.6.32
 # egrep "MEGARAID" .config
 CONFIG_MEGARAID_NEWGEN=y
 CONFIG_MEGARAID_MM=y
 CONFIG_MEGARAID_MAILBOX=y
 # CONFIG_MEGARAID_LEGACY is not set
 # CONFIG_MEGARAID_SAS is not set
 After reboot receive the following error message (part):
 do_page_fault
 sysfs_add_one
 error_code+0x66
 setup_IO_APIC_irq_extra
2. so i add acpi=off (test #6)
 (this workaround works on laptop)
 kernel /boot/xen-4.gz dom0_mem=384000 console=vga acpi=off
 module /boot/vmlinux-2.6.32 root=/dev/sda3 ro console=tty0
 -> received errormessage:
 megaraid Couldn't register IRQ 7!
 megaraid= maibox adapter did not initialize
3. i found a patch [c8] (2006) which does not resolv this problem.
4. test xen-4 with different kernels / summary
 # xen lnx config result
 1 4.0 2.6.32 acpi=on E:setup_IO_APIC_irq_extra
 2 4.0 2.6.32 acpi=off E:ide-atapi: cmd 0x timed out
 6 4.0 2.6.32 acpi=off DMA=n E:megaraid= Couldn't register IRQ 7!
 16 3.4 2.6.18 acpi=on o.k.
 17 4.0 2.6.18 acpi=on o.k.
 - summary:
 - kernel 2.6.18 works with 3.4 and 4.0
 - 2.6.32 seen to have problem with megaraid/apic
What can i do?
regards Torsten
- latest config:
 # egrep "APIC|ACPI_PROCFS|PRIV|CONFIG_X86_(32|64)|MEGARAID" .config |
grep "^C
ONFIG"
 CONFIG_X86_32=y
 CONFIG_X86_32_SMP=y
 CONFIG_X86_32_LAZY_GS=y
 CONFIG_XEN_PRIVILEGED_GUEST=y
 CONFIG_X86_LOCAL_APIC=y
 CONFIG_X86_IO_APIC=y
 CONFIG_ACPI_PROCFS=y
 CONFIG_ACPI_PROCFS_POWER=y
 CONFIG_MEGARAID_NEWGEN=y
 CONFIG_MEGARAID_MM=y
 CONFIG_MEGARAID_MAILBOX=y
------------------------------------------
[7]
http://pkill.info/b/1535/setting-up-xen-pvops-dom0-on-fedora-xen-3-4-2-kernel-2-6-31-with-paravirt_ops-in-fedora-12/
 Setting up Xen pvops Dom0 on Fedora : Xen 3.4.2 + Kernel 2.6.31 with
paravirt_ops in Fedora 12
 - miss: cp vmlinuz
 -> Jeremys git repository
[8] http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git
[b2]
http://lists.xensource.com/archives/cgi-bin/mesg.cgi?a=xen-devel&i=AEC6C66638C05B468B556EA548C1A77D019967E3%40trantor
 [Xen-devel] crash on boot Xen 4.0.1-rc1-pre & kernel 2.6.31.13-ga3e7c7b
[c8] http://lkml.org/lkml/2006/6/29/223
 Intel RAID Controller SRCU42X in SGI Altix 350
 - patch megaraid_mbox DMA_64BIT_MASK
[c15]
http://lists.xensource.com/archives/html/xen-devel/2010-05/msg01466.html
[Xen-devel] Errors while compiling stable-2.6.32.x,
 - You need ACPI in dom0; ...enabling CONFIG_ACPI_PROCFS.
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