From: Sajan Karumanchi <sajan.karumanchi@gmail.com>
To: adhemerval.zanella@linaro.org
Cc: bmerry@sarao.ac.za, goldstein.w.n@gmail.com, hjl.tools@gmail.com,
libc-alpha@sourceware.org, pmallapp@amd.com,
sajan.karumanchi@amd.com, fweimer@redhat.com
Subject: RE: [PATCH 0/4] x86: Improve ERMS usage on Zen3+
Date: Mon, 5 Feb 2024 19:01:08 +0000 [thread overview]
Message-ID: <20240205190108.2332109-1-sajan.karumanchi@amd.com> (raw)
In-Reply-To: <dc825764-2769-42dd-ac9d-01b7ec145fa9@linaro.org>
Adhemerval,
In our extensive testing, we observed mixed results for rep-movs/stos performance with the ERMS feature enabled.
Henceforth, we approve this patch to avoid the ERMS code path on AMD processors for better performance.
-Sajan
next prev parent reply other threads:[~2024-02-05 19:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-31 20:09 Adhemerval Zanella
2023-10-31 20:09 ` [PATCH 1/4] elf: Add a way to check if tunable is set (BZ 27069) Adhemerval Zanella
2023-10-31 20:09 ` [PATCH 2/4] x86: Fix Zen3/Zen4 ERMS selection (BZ 30994) Adhemerval Zanella
2023-10-31 20:09 ` [PATCH 3/4] x86: Do not prefer ERMS for memset on Zen3+ Adhemerval Zanella
2023-10-31 20:09 ` [PATCH 4/4] x86: Expand the comment on when REP STOSB is used on memset Adhemerval Zanella
2023-11-15 19:05 ` [PATCH 0/4] x86: Improve ERMS usage on Zen3+ sajan.karumanchi
2023-11-16 18:35 ` Adhemerval Zanella Netto
2024-02-05 19:01 ` Sajan Karumanchi [this message]
2024-02-06 13:00 ` Adhemerval Zanella Netto
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