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    Contents of /trunk/kernel26-xen/patches-2.6.25-r1/1050-2.6.25-xen-Disable-discover_ebda-under-paravirt.patch

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    Revision 606 - (show annotations) (download)
    Thu May 22 23:13:13 2008 UTC (15 years, 11 months ago) by niro
    File size: 858 byte(s) 
    -ver bump to 2.6.25-magellan-r1:
- linux-2.6.25.4
- fbcondecor-0.9.4
- squashfs-3.3
- unionfs-2.3.3
- tuxonice-3.0-rc7
- linux-phc-0.3.0
- acpi-dstd-0.9a
- reiser4
- xen-3.2.0
. ipw3945-1.2.2
    1 From 9f404979839e554937bb00a0536d16ce94e5bb1f Mon Sep 17 00:00:00 2001
    2 From: Eduardo Habkost <ehabkost@redhat.com>
    3 Date: Wed, 5 Dec 2007 16:58:09 -0200
    4 Subject: [PATCH] Disable discover_ebda() under paravirt
    5
    6 Temporary solution. Should be discussed.
    7
    8 Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
    9 ---
    10 arch/x86/kernel/head64.c | 4 ++++
    11 1 files changed, 4 insertions(+), 0 deletions(-)
    12
    13 diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
    14 index ad24408..df8e1fc 100644
    15 --- a/arch/x86/kernel/head64.c
    16 +++ b/arch/x86/kernel/head64.c
    17 @@ -55,6 +55,10 @@ static __init void reserve_ebda(void)
    18 {
    19 unsigned ebda_addr, ebda_size;
    20
    21 + if (paravirt_enabled())
    22 + /* We don't have access to this physical address under Xen */
    23 + return;
    24 +
    25 /*
    26 * there is a real-mode segmented pointer pointing to the
    27 * 4K EBDA area at 0x40E
    28 --
    29 1.5.4.1
    30