On Fri, 28 Jul 2017 12:51:40 +0200 Borislav Petkov <[email protected]> wrote:
> On Fri, Jul 28, 2017 at 09:09:33AM +0200, Borislav Petkov wrote: > > On Thu, Jul 27, 2017 at 09:47:08PM -0400, Steven Rostedt wrote: > > > What happens if two CPUs have mce's at the same time? Wouldn't one > > > corrupt the other buffer. 128 isn't too big to put on the stack is it? > > > > Yeah, putting it on the stack is probably safer, just in case. > > > > What is even better, though, is if I extended > > arch/x86/kernel/cpu/mcheck/mce-genpool.c to allocate a second buffer for the > > decoded strings. We use it for the struct mces right now. > > Here's a conversion to a 2-page backed genpool. Seems to work: Interesting, this is the first I heard of the genpool. I probably could have used this in other code. Good to know (learn something new every day :-) I'll have to take a look at it when I get home later today (still bouncing between airports). -- Steve
