Messages in this thread | | | Subject | Re: [PATCH v2 07/22] arm64: Keep track of CPU feature registers | From | "Suzuki K. Poulose" <> | Date | Mon, 12 Oct 2015 18:01:25 +0100 |
| |
On 08/10/15 16:03, Catalin Marinas wrote: > On Thu, Oct 08, 2015 at 10:55:11AM +0100, Suzuki K. Poulose wrote:
... > > So we have three types of fields in these registers: > > a) features defined but not something we care about in Linux > b) reserved fields > c) features important to Linux > > I guess for (a), Linux may not even care if they don't match (though we > need to be careful which fields we ignore). As for (b), even if they > differ, since we don't know the meaning at this point, I think we should > just ignore them. If, for example, they add a feature that Linux doesn't > care about, they practically fall under the (a) category. > > Regarding exposing reserved CPUID fields to user, I assume we would > always return 0.
Mark,
Do you have any comments on this ? The list I have here is what you came up with in SANITY checks.
Thanks Suzuki
| |