Re: [PATCH] [18/20] x86: Don't disable TSC in any C states on AMD Fam10h
* Andi Kleen <[EMAIL PROTECTED]> wrote: > The ACPI code currently disables TSC use in any C2 and C3 states. But > the AMD Fam10h BKDG documents that the TSC will never stop in any C > states when the CONSTANT_TSC bit is set. Make this disabling > conditional on CONSTANT_TSC not set on AMD. > > I actually think this is true on Intel too for C2 states on CPUs with > p-state invariant TSC, but this needs further discussions with Len to > really confirm :-) > > So far it is only enabled on AMD. thanks Andi - i've picked this up for x86.git, to get it tested. Len, what do you think? If/when you pick it up into the ACPI tree i'll drop it from x86.git. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH] [18/20] x86: Don't disable TSC in any C states on AMD Fam10h
* Andi Kleen [EMAIL PROTECTED] wrote: The ACPI code currently disables TSC use in any C2 and C3 states. But the AMD Fam10h BKDG documents that the TSC will never stop in any C states when the CONSTANT_TSC bit is set. Make this disabling conditional on CONSTANT_TSC not set on AMD. I actually think this is true on Intel too for C2 states on CPUs with p-state invariant TSC, but this needs further discussions with Len to really confirm :-) So far it is only enabled on AMD. thanks Andi - i've picked this up for x86.git, to get it tested. Len, what do you think? If/when you pick it up into the ACPI tree i'll drop it from x86.git. Ingo -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
