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    Annotation of /trunk/kernel26-xen/patches-2.6.25-r1/1083-2.6.25-xen-Handle-Xen-exception-stack-it-is-different-from-bar.patch

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    Revision 606 - (hide annotations) (download)
    Thu May 22 23:13:13 2008 UTC (16 years ago) by niro
    File size: 1511 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 niro 606 From ae6e8b1f9015e6c70f6945063bc4002926e81d4f Mon Sep 17 00:00:00 2001
    2     From: Eduardo Habkost <ehabkost@redhat.com>
    3     Date: Mon, 24 Dec 2007 17:22:58 -0200
    4     Subject: [PATCH] Handle Xen exception stack (it is different from baremetal stack) (FIXME)
    5    
    6     Now Oopses make sense! :D
    7    
    8     FIXME: This needs to be handled differently at runtime, not compile time.
    9    
    10     Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
    11     ---
    12     arch/x86/kernel/entry_64.S | 18 ++++++++++++++++++
    13     1 files changed, 18 insertions(+), 0 deletions(-)
    14    
    15     diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
    16     index 3fedbd6..d026834 100644
    17     --- a/arch/x86/kernel/entry_64.S
    18     +++ b/arch/x86/kernel/entry_64.S
    19     @@ -728,11 +728,28 @@ ENTRY(spurious_interrupt)
    20     apicinterrupt SPURIOUS_APIC_VECTOR,smp_spurious_interrupt
    21     END(spurious_interrupt)
    22    
    23     +
    24     +/* Xen register handling */
    25     +#ifdef CONFIG_XEN
    26     + /*FIXME: select this at runtime */
    27     + .macro xen_fix_stack
    28     + movq (%rsp),%rcx
    29     + CFI_RESTORE rcx
    30     + movq 8(%rsp),%r11
    31     + CFI_RESTORE r11
    32     + addq $0x10,%rsp /* skip rcx and r11 */
    33     + CFI_ADJUST_CFA_OFFSET -0x10
    34     + .endm
    35     +#else
    36     + .macro xen_fix_stack
    37     + .endm
    38     +#endif
    39     /*
    40     * Exception entry points.
    41     */
    42     .macro zeroentry sym
    43     INTR_FRAME
    44     + xen_fix_stack
    45     pushq $0 /* push error code/oldrax */
    46     CFI_ADJUST_CFA_OFFSET 8
    47     pushq %rax /* push real oldrax to the rdi slot */
    48     @@ -745,6 +762,7 @@ END(spurious_interrupt)
    49    
    50     .macro errorentry sym
    51     XCPT_FRAME
    52     + xen_fix_stack
    53     pushq %rax
    54     CFI_ADJUST_CFA_OFFSET 8
    55     CFI_REL_OFFSET rax,0
    56     --
    57     1.5.4.1
    58