On Tue, Mar 17, 2015 at 6:42 AM, Denys Vlasenko <[email protected]> wrote: > Without this change, it is still not possible to get rid of > PER_CPU_VAR(old_rsp) usage in switch_to: if preemption happens > while we did not fetch PER_CPU_VAR(old_rsp) and stored it in pt_regs->sp, > PER_CPU_VAR(old_rsp) gets corrupted by other task's user sp. >
[...] > - ENABLE_INTERRUPTS(CLBR_NONE) [...] > + ENABLE_INTERRUPTS(CLBR_RAX) In future patches, please don't sneak these things in. It makes it much harder to review. If you need to move code and change it like this, I think it should be clearly and explicitly mentioned in the changelog. --Andy -- 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/
