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SubjectRe: [patch 1/1] uml: fix handling of no fpx_regs [critical, for 2.6.12]
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mån 2005-04-25 klockan 21:12 +0200 skrev blaisorblade@yahoo.it:
> From: Andree Leidenfrost <aleidenf@bigpond.net.au>, Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
>
> Fix the error path, which is triggered when the processor misses the fpx regs
> (i.e. the "fxsr" cpuinfo feature). For instance by VIA C3 Samuel2. Tested and
> obvious, please merge ASAP.
>
> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
> ---
>
> linux-2.6.12-paolo/arch/um/os-Linux/sys-i386/registers.c | 7 ++++---
> 1 files changed, 4 insertions(+), 3 deletions(-)
>
> diff -puN arch/um/os-Linux/sys-i386/registers.c~uml-fix-no_fpx_regs_handling arch/um/os-Linux/sys-i386/registers.c
> --- linux-2.6.12/arch/um/os-Linux/sys-i386/registers.c~uml-fix-no_fpx_regs_handling 2005-04-25 21:03:11.000000000 +0200
> +++ linux-2.6.12-paolo/arch/um/os-Linux/sys-i386/registers.c 2005-04-25 21:08:07.000000000 +0200
> @@ -105,14 +105,15 @@ void init_registers(int pid)
> panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
> err);
>
> + errno = 0;
> err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs);
> if(!err)
> return;
> + if(errno != EIO)
> + panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d",
> + errno);

Looks like you mean "if (err != EIO)" here


> have_fpx_regs = 0;
> - if(err != EIO)
> - panic("check_ptrace : PTRACE_GETFPXREGS failed, errno = %d",
> - err);
>
> err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs);
> if(err)



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