From: Borislav Petkov <bp@alien8.de>
To: Tony Luck <tony.luck@intel.com>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>,
Jerry Chen <jerry.t.chen@intel.com>, Jin Wen <wen.jin@intel.com>,
Aristeu Rozanski <aris@redhat.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
linux-edac@vger.kernel.org
Subject: Re: [PATCH 2/2] EDAC, i10nm: Fix i10nm_edac loading failure on some servers
Date: Mon, 27 Apr 2020 10:40:22 +0200 [thread overview]
Message-ID: <20200427084022.GC11036@zn.tnic> (raw)
In-Reply-To: <20200424185738.7985-3-tony.luck@intel.com>
On Fri, Apr 24, 2020 at 11:57:38AM -0700, Tony Luck wrote:
> Subject: Re: [PATCH 2/2] EDAC, i10nm: Fix i10nm_edac loading failure on some
Please use "EDAC/<driver>:" prefix.
And I guess that patch name should be something like:
EDAC/i10nm: Update driver to support different bus number config register offsets
or so.
> From: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
>
> It failed to load the i10nm_edac driver on Ice Lake and
"The i10nm_edac driver failed to load ... "
> Tremont/Jacobsville servers if their CPU stepping >= 4 and failed
> on Ice Lake-D servers from stepping 0. The root cause was that for
> Ice Lake and Tremont/Jacobsville servers with CPU stepping >=4, the
> offset for bus number configuration register was updated from 0xcc
> to 0xd0. For Ice Lake-D servers, all the steppings use the updated
> 0xd0 offset.
>
> Fix the issue by using the appropriate offset for bus number
> configuration register according to the CPU model number and stepping.
>
> Reported-by: Jerry Chen <jerry.t.chen@intel.com>
> Reported-and-tested-by: Jin Wen <wen.jin@intel.com>
> Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
> Signed-off-by: Tony Luck <tony.luck@intel.com>
> ---
> drivers/edac/i10nm_base.c | 20 ++++++++++++++++----
> 1 file changed, 16 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
> index ba4578c6ef2b..ebb45738c11b 100644
> --- a/drivers/edac/i10nm_base.c
> +++ b/drivers/edac/i10nm_base.c
> @@ -122,16 +122,24 @@ static int i10nm_get_all_munits(void)
> return 0;
> }
>
> -static struct res_config i10nm_cfg = {
> +/* ATOM_TREMONT_D, ICELAKE_X */
That comment...
> +static struct res_config i10nm_cfg0 = {
> .type = I10NM,
> .decs_did = 0x3452,
> .busno_cfg_offset = 0xcc,
> };
>
> +/* ICELAKE_D */
... and that one are kinda redundant...
> +static struct res_config i10nm_cfg1 = {
> + .type = I10NM,
> + .decs_did = 0x3452,
> + .busno_cfg_offset = 0xd0,
> +};
> +
> static const struct x86_cpu_id i10nm_cpuids[] = {
> - X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_D, &i10nm_cfg),
> - X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, &i10nm_cfg),
> - X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_D, &i10nm_cfg),
> + X86_MATCH_INTEL_FAM6_MODEL(ATOM_TREMONT_D, &i10nm_cfg0),
> + X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_X, &i10nm_cfg0),
> + X86_MATCH_INTEL_FAM6_MODEL(ICELAKE_D, &i10nm_cfg1),
... since it is written here what what is.
Anyway, just nitpicks. Other than that:
Reviewed-by: Borislav Petkov <bp@suse.de>
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
prev parent reply other threads:[~2020-04-27 8:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-24 18:57 [PATCH 0/2] Fix i10nm_edac driver load failure Tony Luck
2020-04-24 18:57 ` [PATCH 1/2] EDAC, {skx,i10nm}: Make some configurations CPU model specific Tony Luck
2020-04-27 8:32 ` Borislav Petkov
2020-04-24 18:57 ` [PATCH 2/2] EDAC, i10nm: Fix i10nm_edac loading failure on some servers Tony Luck
2020-04-27 8:40 ` Borislav Petkov [this message]
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