Re: [GIT PULL] x86 fixes for 2.6.30-rc8

From: Pavel Machek
Date: Sat May 30 2009 - 07:22:51 EST


> --- a/Documentation/kernel-parameters.txt
> +++ b/Documentation/kernel-parameters.txt
> @@ -1535,6 +1535,10 @@ and is between 256 and 4096 characters. It is defined in the file
> register save and restore. The kernel will only save
> legacy floating-point registers on task switch.
> + noxsave [BUGS=X86] Disables x86 extended register state save
> + and restore using xsave. The kernel will fallback to
> + enabling legacy floating-point and sse state.
> +

Does that mean apps using sse8 will see their registers corrupted if
this option is used? Or are new registers sets always added in a way
that kernel has to enable them first?

(cesky, pictures)
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