RE: [Patch V1 1/3] x86, mce: MCE log size not enough for high core parts

[Luck, Tony]

> If we get new ones logged in the meantime and userspace hasn't managed
> to consume and delete the present ones yet, we overwrite the oldest ones
> and set MCE_OVERFLOW like mce_log does now for mcelog. And that's no
> difference in functionality than what we have now.

Ummmm. No.

                for (;;) {

                        /*
                         * When the buffer fills up discard new entries.
                         * Assume that the earlier errors are the more
                         * interesting ones:
                         */
                        if (entry >= MCE_LOG_LEN) {
                                set_bit(MCE_OVERFLOW,
                                        (unsigned long *)&mcelog.flags);
                                return;
                        }

-Tony