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    Annotation of /trunk/kernel26-xen/patches-2.6.25-r1/1088-2.6.25-xen-Implement-xen_irqenable_syscall_ret.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: 1842 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 2763ac022ebd765746ccb681cd637ecfa67e5f09 Mon Sep 17 00:00:00 2001
    2     From: Eduardo Habkost <ehabkost@redhat.com>
    3     Date: Mon, 4 Feb 2008 18:06:53 -0200
    4     Subject: [PATCH] Implement xen_irqenable_syscall_ret()
    5    
    6     Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
    7     ---
    8     arch/x86/xen/enlighten.c | 3 ++-
    9     arch/x86/xen/xen-asm_64.S | 8 ++++++++
    10     arch/x86/xen/xen-ops.h | 2 ++
    11     3 files changed, 12 insertions(+), 1 deletions(-)
    12    
    13     diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
    14     index 90d732d..7633851 100644
    15     --- a/arch/x86/xen/enlighten.c
    16     +++ b/arch/x86/xen/enlighten.c
    17     @@ -1107,10 +1107,11 @@ static const struct pv_cpu_ops xen_cpu_ops __initdata = {
    18    
    19     #ifdef CONFIG_X86_32
    20     .iret = (void *)&hypercall_page[__HYPERVISOR_iret],
    21     + .irq_enable_syscall_ret = NULL, /* never called */
    22     #else
    23     .iret = xen_iret,
    24     + .irq_enable_syscall_ret = xen_irqenable_syscall_ret,
    25     #endif
    26     - .irq_enable_syscall_ret = NULL, /* never called */
    27    
    28     .load_tr_desc = paravirt_nop,
    29     .set_ldt = xen_set_ldt,
    30     diff --git a/arch/x86/xen/xen-asm_64.S b/arch/x86/xen/xen-asm_64.S
    31     index 85c235c..9ceaeab 100644
    32     --- a/arch/x86/xen/xen-asm_64.S
    33     +++ b/arch/x86/xen/xen-asm_64.S
    34     @@ -62,3 +62,11 @@ xen_iret_slow:
    35     jmp hypercall_page + (__HYPERVISOR_iret * 32)
    36     END(xen_iret)
    37    
    38     +#define VGCF_in_syscall (1<<8)
    39     +
    40     +ENTRY(xen_irqenable_syscall_ret)
    41     + orl $X86_EFLAGS_IF,EFLAGS-IRETOFFSET(%rsp)
    42     +
    43     + pushq $VGCF_in_syscall
    44     + jmp hypercall_page + (__HYPERVISOR_iret * 32)
    45     +END(xen_irqenable_syscall_ret)
    46     diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
    47     index e52bb4c..b523062 100644
    48     --- a/arch/x86/xen/xen-ops.h
    49     +++ b/arch/x86/xen/xen-ops.h
    50     @@ -72,4 +72,6 @@ DECL_ASM(void, xen_restore_fl_direct, unsigned long);
    51    
    52     void xen_iret_direct(void);
    53     void xen_iret(void);
    54     +void xen_irqenable_syscall_ret(void);
    55     +
    56     #endif /* XEN_OPS_H */
    57     --
    58     1.5.4.1
    59