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    Contents of /tags/kernel26-xen-2_6_25_r1-fedora9-patches/kernel26-xen/patches-2.6.25-r1/1146-2.6.25-xen-pvops-64-Include-rsi-on-the-register-clobber-list.patch

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    Revision 608 - (show annotations) (download)
    Fri May 23 12:17:32 2008 UTC (16 years ago) by (unknown author)
    File size: 1367 byte(s) 
    This commit was manufactured by cvs2svn to create tag
'kernel26-xen-2_6_25_r1-fedora9-patches'.
    1 From 9d7b6eb70703f293b4d9881b29e7d27169ebd6a6 Mon Sep 17 00:00:00 2001
    2 From: Eduardo Habkost <ehabkost@redhat.com>
    3 Date: Wed, 20 Feb 2008 19:03:55 -0300
    4 Subject: [PATCH] pvops-64: Include %rsi on the register clobber list for IRQ functions (REVIEWME)
    5
    6 The IRQ functions may be C functions, and they may clobber RSI.
    7
    8 Probably the best option will be saving it to avoid clobbering it after
    9 the IRQ functions' call places are patched. Clobbering too much registers
    10 when most IRQ functions will use none on few of them isn't a good idea.
    11
    12 Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
    13 ---
    14 include/asm-x86/paravirt.h | 4 ++--
    15 1 files changed, 2 insertions(+), 2 deletions(-)
    16
    17 diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
    18 index 20a930f..784ea98 100644
    19 --- a/include/asm-x86/paravirt.h
    20 +++ b/include/asm-x86/paravirt.h
    21 @@ -1291,8 +1291,8 @@ extern struct paravirt_patch_site __parainstructions[],
    22 * caller saved registers but the argument parameter */
    23 #define PV_SAVE_REGS "pushq %%rdi;"
    24 #define PV_RESTORE_REGS "popq %%rdi;"
    25 -#define PV_EXTRA_CLOBBERS EXTRA_CLOBBERS, "rcx" , "rdx"
    26 -#define PV_VEXTRA_CLOBBERS EXTRA_CLOBBERS, "rdi", "rcx" , "rdx"
    27 +#define PV_EXTRA_CLOBBERS EXTRA_CLOBBERS, "rsi", "rcx" , "rdx"
    28 +#define PV_VEXTRA_CLOBBERS EXTRA_CLOBBERS, "rdi", "rsi", "rcx" , "rdx"
    29 #define PV_FLAGS_ARG "D"
    30 #endif
    31
    32 --
    33 1.5.4.1
    34