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    Subject[PATCH v3 1/7] x86-32, kgdb: Don't use thread.ip in sleeping_thread_to_gdb_regs()
    Date
    Match 64-bit and set gdb_regs[GDB_PC] to zero.  thread.ip is always the
    same point in the scheduler (except for newly forked processes), and will
    be removed in a future patch.

    Signed-off-by: Brian Gerst <brgerst@gmail.com>
    ---
    arch/x86/kernel/kgdb.c | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
    index 04cde52..fe649a5 100644
    --- a/arch/x86/kernel/kgdb.c
    +++ b/arch/x86/kernel/kgdb.c
    @@ -172,7 +172,6 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
    gdb_regs[GDB_ES] = __KERNEL_DS;
    gdb_regs[GDB_PS] = 0;
    gdb_regs[GDB_CS] = __KERNEL_CS;
    - gdb_regs[GDB_PC] = p->thread.ip;
    gdb_regs[GDB_SS] = __KERNEL_DS;
    gdb_regs[GDB_FS] = 0xFFFF;
    gdb_regs[GDB_GS] = 0xFFFF;
    @@ -180,7 +179,6 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
    gdb_regs32[GDB_PS] = *(unsigned long *)(p->thread.sp + 8);
    gdb_regs32[GDB_CS] = __KERNEL_CS;
    gdb_regs32[GDB_SS] = __KERNEL_DS;
    - gdb_regs[GDB_PC] = 0;
    gdb_regs[GDB_R8] = 0;
    gdb_regs[GDB_R9] = 0;
    gdb_regs[GDB_R10] = 0;
    @@ -190,6 +188,7 @@ void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
    gdb_regs[GDB_R14] = 0;
    gdb_regs[GDB_R15] = 0;
    #endif
    + gdb_regs[GDB_PC] = 0;
    gdb_regs[GDB_SP] = p->thread.sp;
    }

    --
    2.5.5
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