From: Borislav Petkov <bp@alien8.de>
To: Smita Koralahalli Channabasappa <skoralah@amd.com>
Cc: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>,
x86@kernel.org, linux-edac@vger.kernel.org,
linux-kernel@vger.kernel.org, Tony Luck <tony.luck@intel.com>,
"H . Peter Anvin" <hpa@zytor.com>,
yazen.ghannam@amd.com
Subject: Re: [PATCH 1/5] x86/mce/inject: Check if a bank is unpopulated before error simulation
Date: Mon, 27 Sep 2021 22:15:18 +0200 [thread overview]
Message-ID: <YVImVgsxyfQO7TGI@zn.tnic> (raw)
In-Reply-To: <60d4f6be-76f7-e4b6-6fb5-2af78b01d32d@amd.com>
On Mon, Sep 27, 2021 at 02:51:56PM -0500, Smita Koralahalli Channabasappa wrote:
> Can you please elaborate on this? I'm not sure if I understood this
> right. Should I read the ipid file to verify that the user has input
> proper ipid? If ipid file reads zero then do rdmsrl_on_cpu?
No, on a write to the ipid file you should do that checking and write if
the bank is populated or fail the write otherwise. And you should put
all that code in inj_bank_set() - that's why I say "on a write to the
ipid file".
And instead of boot_cpu_has() you should use cpu_feature_enabled().
Makes sense?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-09-27 20:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-15 23:27 [PATCH 0/5] x86/mce: Handle error simulation failures in mce-inject module Smita Koralahalli
2021-09-15 23:27 ` [PATCH 1/5] x86/mce/inject: Check if a bank is unpopulated before error simulation Smita Koralahalli
2021-09-24 8:26 ` Borislav Petkov
2021-09-27 19:51 ` Smita Koralahalli Channabasappa
2021-09-27 20:15 ` Borislav Petkov [this message]
2021-09-27 21:56 ` Smita Koralahalli Channabasappa
2021-09-27 22:05 ` Borislav Petkov
2021-10-11 21:12 ` Koralahalli Channabasappa, Smita
2021-10-14 18:22 ` Borislav Petkov
2021-10-14 20:26 ` Koralahalli Channabasappa, Smita
2021-10-14 20:57 ` Borislav Petkov
2021-09-15 23:27 ` [PATCH 2/5] x86/mce/inject: Set the valid bit in MCA_STATUS before error injection Smita Koralahalli
2021-09-24 8:26 ` Borislav Petkov
2021-09-15 23:27 ` [PATCH 3/5] x86/mce: Use msr_ops in prepare_msrs() Smita Koralahalli
2021-09-24 8:26 ` Borislav Petkov
2021-09-15 23:27 ` [PATCH 4/5] x86/mce/inject: Check for writes ignored in status registers Smita Koralahalli
2021-09-15 23:27 ` [PATCH 5/5] x86/mce/mce-inject: Return error code to userspace from mce-inject module Smita Koralahalli
2021-09-24 8:26 ` Borislav Petkov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YVImVgsxyfQO7TGI@zn.tnic \
--to=bp@alien8.de \
--cc=Smita.KoralahalliChannabasappa@amd.com \
--cc=hpa@zytor.com \
--cc=linux-edac@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=skoralah@amd.com \
--cc=tony.luck@intel.com \
--cc=x86@kernel.org \
--cc=yazen.ghannam@amd.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).