Change in coreboot[master]: libpayload/x86: Try to discover invariant TSC rate

[Angel Pons (Code Review)]

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/34170 )

Change subject: libpayload/x86: Try to discover invariant TSC rate
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Patch Set 4: Code-Review+1

(2 comments)

https://review.coreboot.org/c/coreboot/+/34170/4/payloads/libpayload/arch/x8... 
File payloads/libpayload/arch/x86/timer.c:

https://review.coreboot.org/c/coreboot/+/34170/4/payloads/libpayload/arch/x8... 
PS4, Line 90: ecx
> this seems unneeded, you could just pass nominal for ecx, and if it's 0, perform the model checks

`nominal` is a 64-bit variable, though

https://review.coreboot.org/c/coreboot/+/34170/4/payloads/libpayload/arch/x8... 
PS4, Line 176: _rdmsr(MSR_PLATFORM_INFO) >> 8
> nit: brackets for readability?

Either this or drop the brackets in the return statement