Messages in this thread |  | | | Subject | Re: Direct access to hardware | | Date | Wed, 26 Jul 2000 10:28:02 -0400 | | From | Horst von Brand <> |
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James Sutherland <jas88@cam.ac.uk> said: > On Tue, 25 Jul 2000, Horst von Brand wrote:
[...]
> > Please show me where Linux checks every byte of an executable before > > running it to make sure it doesn't f00f or coma your CPU.
> Inside the CPU, in hardware. If you attempt to execute invalid code, Linux > knows about it straight away.
I.e., Linux (the kernel) does _no_ checking at all, it gets notified by the hardware when something is awry. Exactly the same thing as I advocate for hard disks et al: They have to protect themselves, and notify <somebody> when things do go wrong.
Thanks. -- Dr. Horst H. von Brand mailto:vonbrand@inf.utfsm.cl Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513
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