Messages in this thread | | | Subject | Re: [RFC 05/10] x86/speculation: Add basic IBRS support infrastructure | Date | Mon, 22 Jan 2018 13:36:59 +0000 | From | "Woodhouse, David" <> |
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On Mon, 2018-01-22 at 14:30 +0100, Greg Kroah-Hartman wrote: > We kind of do, you can submit patches to UEFI, but I doubt that the > processor-specific portions are actually present in the Tianocore code > to be able to be patched.
This is just about which microcode your BIOS loads into the CPU before booting the OS. It's not "process-specific portions in the Tianocore code"; more a data blob — just like when Linux updates microcode.
> What about LinuxBoot <https://linuxboot.org>, does it too take over too > late in the boot process to control this?
Yes, I believe microcode updates are done in PEI which is before LinuxBoot takes over.[unhandled content-type:application/x-pkcs7-signature] | |