No need to be a major power. Linux patches x86 code, as does Windows. I ran
across a project several years ago that modified the microcode for some i/o x86
assembly instructions. Here's a good link explaining it all.
http://en.wikipedia.org/wiki/Microcode
All this hw/sw flexibility makes
[EMAIL PROTECTED] wrote:
No need to be a major power. Linux patches x86 code, as does Windows. I ran across a project several years ago that modified the microcode for some i/o x86 assembly instructions. Here's a good link explaining it all.
What the OS or the BIOS loads is files that
The signature in the microcode update has not the same
meaning as within crypto. For intel chips it has 31bits and basically
contains a revision number. The requirements for the BIOS for
checking microcode updates are in short: check the crc and ensure
that older revisions cant replace new ones
Intel and AMD processors can have new microcode loaded to them, and this
is usually done by the BIOS. Presumably there is some asymmetric crypto
involved with the processor doing the signature validation.
A major power that makes a good fraction of the world's laptops and
desktops (and hence
