linux-kernel - Re: [PATCH v9 2/3] x86/mce: Add per-bank CMCI storm mitigation

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Message-ID: <ZWT4pAJ6g0i78wec@agluck-desk3>
Date:   Mon, 27 Nov 2023 12:14:28 -0800
From:   Tony Luck <tony.luck@...el.com>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Yazen Ghannam <yazen.ghannam@....com>,
        Smita.KoralahalliChannabasappa@....com,
        dave.hansen@...ux.intel.com, x86@...nel.org,
        linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev
Subject: Re: [PATCH v9 2/3] x86/mce: Add per-bank CMCI storm mitigation

On Mon, Nov 27, 2023 at 11:50:26AM -0800, Tony Luck wrote:
> On Tue, Nov 21, 2023 at 12:54:48PM +0100, Borislav Petkov wrote:
> > On Tue, Nov 14, 2023 at 02:04:46PM -0800, Tony Luck wrote:
> But it isn't doing the same thing.  The timer calls:
> 
> 	machine_check_poll(0, this_cpu_ptr(&mce_poll_banks));
> 
> and cmci_mc_poll_banks() calls:
> 
> 	machine_check_poll(0, this_cpu_ptr(&mce_poll_banks));

Bah ... I've cut & pasted the same thing ... but I think there
are separate bit maps ... maybe I'm wrong. Will go back and
look again.

-Tony