[Xen-devel] Upstream QEMU and Xen unstable not working

[Wei Liu <liuw@xxxxxxxxx>]

Bug resend.

This bug was reported about one month ago. QEMU fails to start with
Xen unstable. I found that it has not been fix with latest Xen
unstable. BIOS is Seabios (with Xen patch).

Xen-unstable a2457fc25c83872a5646c93f1e31958a2f5951e9
    libxl: add LIBXL_MAC_{FMT,FMTLEN,BYTES}

    Modelled after LIBXL_UUID_... (where I also add FMTLEN).

    signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
    Committed-by: Ian Jackson <ian.jackson.citrix.com>

QEMU         cf973e469bd9d47c0460347764c1315a6180e13c
    set ELF_HWCAP for SPARC and SPARC64

    setting ELF_HWCAP fixes dynamic library loading for Linux/sparc64
    This patch allows loading busybox from Debian 6 initrd

    Signed-off-by: Artyom Tarasenko <atar4qemu@xxxxxxxxx>
    Signed-off-by: Blue Swirl <blauwirbel@xxxxxxxxx>


These are not the problematic commits, I didn't do a regression
test. I just choose my latest commits as testing base.

Also, please note that
Xen-unstable a8f9242a7021a1febdc2ff7f8c6f6b66ee7e6745
does not trigger this bug.

Stefano and Anthony, you once said that you were going to setup a
public QEMU repository for Xen, how is it going now?

Wei.

------QEMU log------

char device redirected to /dev/pts/2
Warning: more nics requested than this machine supports; some have been ignored
qemu: hardware error: register_ioport_write: invalid opaque for address 0xc000
CPU #0:
EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000633
ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000
EIP=0000fff0 EFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=1
ES =0000 00000000 0000ffff 00009300
CS =f000 ffff0000 0000ffff 00009b00
SS =0000 00000000 0000ffff 00009300
DS =0000 00000000 0000ffff 00009300
FS =0000 00000000 0000ffff 00009300
GS =0000 00000000 0000ffff 00009300
LDT=0000 00000000 0000ffff 00008200
TR =0000 00000000 0000ffff 00008b00
GDT=     00000000 0000ffff
IDT=     00000000 0000ffff
CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000
DR0=00000000 DR1=00000000 DR2=00000000 DR3=00000000
DR6=ffff0ff0 DR7=00000400
EFER=0000000000000000
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000
XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000

------Seabios patch------
diff --git a/src/Kconfig b/src/Kconfig
index 6d55b23..6829f71 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -10,6 +10,12 @@ menu "General Features"
         help
             Configure as a coreboot payload.

+    config XEN
+        bool "Build for Xen HVM"
+        default n
+        help
+            Configure to be used by xen hvmloader, for a HVM guest.
+
     config THREADS
         bool "Parallelize hardware init"
         default y
diff --git a/src/shadow.c b/src/shadow.c
index ed530e0..a778701 100644
--- a/src/shadow.c
+++ b/src/shadow.c
@@ -102,7 +102,7 @@ static const struct pci_device_id
dram_controller_make_writable_tbl[] = {
 void
 make_bios_writable(void)
 {
-    if (CONFIG_COREBOOT)
+    if (CONFIG_COREBOOT || CONFIG_XEN)
         return;

     dprintf(3, "enabling shadow ram\n");
@@ -127,7 +127,7 @@ static const struct pci_device_id
dram_controller_make_readonly_tbl[] = {
 void
 make_bios_readonly(void)
 {
-    if (CONFIG_COREBOOT)
+    if (CONFIG_COREBOOT || CONFIG_XEN)
         return;

     dprintf(3, "locking shadow ram\n");

------Xen seabios config------
#
# Automatically generated make config: don't edit
# SeaBIOS Configuration
# Wed Apr 20 00:09:35 2011
#

#
# General Features
#
# CONFIG_COREBOOT is not set
CONFIG_XEN=y
CONFIG_THREADS=y
CONFIG_THREAD_OPTIONROMS=y
CONFIG_RELOCATE_INIT=y
CONFIG_BOOTMENU=y
CONFIG_BOOTMENU_WAIT=1000
# CONFIG_BOOTSPLASH is not set

#
# Hardware support
#
CONFIG_ATA=y
CONFIG_ATA_DMA=y
CONFIG_ATA_PIO32=y
CONFIG_AHCI=y
CONFIG_VIRTIO_BLK=y
CONFIG_FLOPPY=y
CONFIG_PS2PORT=y
CONFIG_USB=y
CONFIG_USB_UHCI=y
CONFIG_USB_OHCI=y
CONFIG_USB_EHCI=y
CONFIG_USB_MSC=y
CONFIG_USB_HUB=y
CONFIG_USB_KEYBOARD=y
CONFIG_USB_MOUSE=y
CONFIG_SERIAL=y
CONFIG_LPT=y
# CONFIG_EXTRA_PCI_ROOTS is not set
# CONFIG_USE_SMM is not set
CONFIG_MTRR_INIT=y

#
# BIOS interfaces
#
CONFIG_DRIVES=y
# CONFIG_CDROM_BOOT is not set
CONFIG_PCIBIOS=y
CONFIG_APMBIOS=y
CONFIG_PNPBIOS=y
CONFIG_OPTIONROMS=y
CONFIG_OPTIONROMS_DEPLOYED=y
CONFIG_OPTIONROMS_CHECKSUM=y
CONFIG_PMM=y
CONFIG_BOOT=y
CONFIG_KEYBOARD=y
CONFIG_KBD_CALL_INT15_4F=y
CONFIG_MOUSE=y
CONFIG_S3_RESUME=y
# CONFIG_S3_RESUME_VGA_INIT is not set
# CONFIG_DISABLE_A20 is not set

#
# BIOS Tables
#
CONFIG_PIRTABLE=y
CONFIG_MPTABLE=y
CONFIG_SMBIOS=y
CONFIG_ACPI=y

#
# Debugging
#
CONFIG_DEBUG_LEVEL=9
CONFIG_DEBUG_SERIAL=y
# CONFIG_SCREEN_AND_DEBUG is not set

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