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From: Borislav Petkov <bp@alien8.de>
To: Robert Richter <rrichter@marvell.com>
Cc: James Morse <james.morse@arm.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	"linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 02/24] EDAC, ghes: Fix grain calculation
Date: Mon, 12 Aug 2019 09:32:22 +0200
Message-ID: <20190812073221.GA23772@zn.tnic> (raw)
In-Reply-To: <20190812064147.5czmkj7e6hxgvje3@rric.localdomain>

On Mon, Aug 12, 2019 at 06:42:00AM +0000, Robert Richter wrote:
> I have seen you had actively promoted this style guideline, I even was
> not aware of it, thanks for the pointer.

It is about time we started writing proper commit messages. How long are
we trying, 20 years...?

> With the grain_bits calculation the mask is rounded up to the next
> power of 2 value.

mask	  = 0xffffffffff00ff00
~mask	  = 0x0000000000ff00ff
~mask + 1 = 0x0000000000ff0100

Your "trick" of adding a 1 to get to the most significant bit simply
doesn't work here. Thus:

"I guess we can leave it like that for now until some "inventive"
firmware actually does it."

> The reason this is here is because this check will be moved to
> edac_raw_mc_handle_error() to unify edac_mc and ghes code (see patch
> #4).

Ok.

Thx.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

  reply index

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-24 15:08 [PATCH v2 00/24] EDAC, mc, ghes: Fixes and updates to improve memory error reporting Robert Richter
2019-06-24 15:08 ` [PATCH v2 01/24] EDAC, mc: Fix grain_bits calculation Robert Richter
2019-08-03 10:08   ` Borislav Petkov
2019-06-24 15:08 ` [PATCH v2 02/24] EDAC, ghes: Fix grain calculation Robert Richter
2019-08-09 13:15   ` Borislav Petkov
2019-08-12  6:42     ` Robert Richter
2019-08-12  7:32       ` Borislav Petkov [this message]
2019-08-12 12:05         ` Robert Richter
2019-08-12 12:38           ` Borislav Petkov
2019-06-24 15:08 ` [PATCH v2 03/24] EDAC, ghes: Remove pvt->detail_location string Robert Richter
2019-08-02 17:04   ` James Morse
2019-08-07  9:00     ` Robert Richter
2019-08-13  8:09   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 04/24] EDAC, ghes: Unify trace_mc_event() code with edac_mc driver Robert Richter
2019-06-24 15:09 ` [PATCH v2 05/24] EDAC, mc: Fix and improve sysfs init functions Robert Richter
2019-08-13  8:26   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 06/24] EDAC: Kill EDAC_DIMM_PTR() macro Robert Richter
2019-08-13 14:59   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 07/24] EDAC: Kill EDAC_DIMM_OFF() macro Robert Richter
2019-08-14 14:52   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 08/24] EDAC: Introduce mci_for_each_dimm() iterator Robert Richter
2019-08-14 15:18   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 09/24] EDAC, mc: Cleanup _edac_mc_free() code Robert Richter
2019-08-14 16:31   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 10/24] EDAC, mc: Remove per layer counters Robert Richter
2019-08-16  9:24   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 11/24] EDAC, mc: Rework edac_raw_mc_handle_error() to use struct dimm_info Robert Richter
2019-06-24 15:09 ` [PATCH v2 12/24] EDAC, ghes: Use standard kernel macros for page calculations Robert Richter
2019-08-02 17:04   ` James Morse
2019-08-07  9:52     ` Robert Richter
2019-06-24 15:09 ` [PATCH v2 13/24] EDAC, ghes: Add support for legacy API counters Robert Richter
2019-08-16  9:55   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 14/24] EDAC, ghes: Rework memory hierarchy detection Robert Richter
2019-08-20  8:56   ` Borislav Petkov
2019-06-24 15:09 ` [PATCH v2 15/24] EDAC, ghes: Extract numa node information for each dimm Robert Richter
2019-08-02 17:05   ` James Morse
2019-08-09 13:09     ` Robert Richter
2019-06-24 15:09 ` [PATCH v2 16/24] EDAC, ghes: Moving code around ghes_edac_register() Robert Richter
2019-06-24 15:09 ` [PATCH v2 17/24] EDAC, ghes: Create one memory controller device per node Robert Richter
2019-06-24 15:09 ` [PATCH v2 18/24] EDAC, ghes: Fill sysfs with the DMI DIMM label information Robert Richter
2019-06-24 15:09 ` [PATCH v2 19/24] EDAC, mc: Introduce edac_mc_alloc_by_dimm() for per dimm allocation Robert Richter
2019-06-24 15:09 ` [PATCH v2 20/24] EDAC, ghes: Identify dimm by node, card, module and handle Robert Richter
2019-06-24 15:09 ` [PATCH v2 21/24] EDAC, ghes: Enable per-layer reporting based on card/module Robert Richter
2019-06-24 15:09 ` [PATCH v2 22/24] EDAC, ghes: Move struct member smbios_handle to struct ghes_dimm_info Robert Richter
2019-06-24 15:09 ` [PATCH v2 23/24] EDAC, Documentation: Describe CPER module definition and DIMM ranks Robert Richter
2019-06-24 15:09 ` [PATCH v2 24/24] EDAC, ghes: Disable legacy API for ARM64 Robert Richter
2019-06-26  9:33   ` James Morse
2019-06-26 10:11     ` Robert Richter
2019-08-02  7:58 ` [PATCH v2 00/24] EDAC, mc, ghes: Fixes and updates to improve memory error reporting Robert Richter

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