Re: [PATCH 3/5] x86/mcheck/AMD: Reduce number of blocks scanned per bank

From: Aravind Gopalakrishnan
Date: Thu Jan 14 2016 - 18:08:44 EST

On 1/14/2016 4:53 PM, Borislav Petkov wrote:
On Thu, Jan 14, 2016 at 04:48:22PM -0600, Aravind Gopalakrishnan wrote:
True. But that BlkPtr logic also will undergo changes as it's interpretation
for future processors is different.
But there still must be a bit there which says "this register is valid",
like MCi_MISC[63].

There is a bit to say if it's valid or not.

And so I'd very much prefer checking a bit (or bits) instead of relying
on defines.

But we'd still need to know the last available MISC register for a bank to know when to end the loop right?

Currently we loop over all the possible blocks-
for (block = 0; block < NR_BLOCKS; ++block) {

increment block address;


Here, we know we have to stop at block number 8 as that is the last MISC register that is present for a bank.
In the same manner, we'd still have to know the last possible MISC register for future processors..