From: Alexander Monakov <amonakov@ispras.ru>
To: qemu-devel@nongnu.org
Cc: Richard Henderson <richard.henderson@linaro.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Alexander Monakov <amonakov@ispras.ru>
Subject: [PATCH 0/5] Reinstate ability to use Qemu on pre-SSE4.1 x86 hosts
Date: Wed, 12 Jun 2024 13:55:20 +0300 [thread overview]
Message-ID: <20240612105525.8795-1-amonakov@ispras.ru> (raw)
Hello,
I'm sending straightforward reverts to recent patches that bumped minimum
required x86 instruction set to SSE4.2. The older chips did not stop working,
and people still test and use new software on older hardware:
https://sourceware.org/bugzilla/show_bug.cgi?id=31867
Considering the very minor gains from the baseline raise, I'm honestly not
sure why it happened. It seems better to let distributions handle that.
Alexander Monakov (5):
Revert "host/i386: assume presence of POPCNT"
Revert "host/i386: assume presence of SSSE3"
Revert "host/i386: assume presence of SSE2"
Revert "host/i386: assume presence of CMOV"
Revert "meson: assume x86-64-v2 baseline ISA"
host/include/i386/host/cpuinfo.h | 3 +++
meson.build | 10 +++-------
tcg/i386/tcg-target.c.inc | 15 ++++++++++++++-
tcg/i386/tcg-target.h | 5 +++--
util/bufferiszero.c | 4 ++--
util/cpuinfo-i386.c | 7 +++++--
6 files changed, 30 insertions(+), 14 deletions(-)
--
2.32.0
next reply other threads:[~2024-06-12 10:57 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-12 10:55 Alexander Monakov [this message]
2024-06-12 10:55 ` [PATCH 1/5] Revert "host/i386: assume presence of POPCNT" Alexander Monakov
2024-06-12 10:55 ` [PATCH 2/5] Revert "host/i386: assume presence of SSSE3" Alexander Monakov
2024-06-12 10:55 ` [PATCH 3/5] Revert "host/i386: assume presence of SSE2" Alexander Monakov
2024-06-12 10:55 ` [PATCH 4/5] Revert "host/i386: assume presence of CMOV" Alexander Monakov
2024-06-12 10:55 ` [PATCH 5/5] Revert "meson: assume x86-64-v2 baseline ISA" Alexander Monakov
2024-06-12 11:04 ` [PATCH 0/5] Reinstate ability to use Qemu on pre-SSE4.1 x86 hosts Daniel P. Berrangé
2024-06-12 11:12 ` Paolo Bonzini
2024-06-12 11:19 ` Alexander Monakov
2024-06-12 11:29 ` Paolo Bonzini
2024-06-12 11:46 ` Alexander Monakov
2024-06-12 11:58 ` Paolo Bonzini
2024-06-12 12:10 ` Alexander Monakov
2024-06-12 12:13 ` Paolo Bonzini
2024-06-12 13:34 ` Alexander Monakov
2024-06-12 13:39 ` Paolo Bonzini
2024-06-12 14:27 ` Alexander Monakov
2024-06-12 11:38 ` Daniel P. Berrangé
2024-06-12 11:51 ` Paolo Bonzini
2024-06-12 12:21 ` Daniel P. Berrangé
2024-06-12 15:09 ` Daniel P. Berrangé
2024-06-12 15:29 ` Paolo Bonzini
2024-06-12 15:40 ` Alexander Monakov
2024-06-12 16:24 ` Daniel P. Berrangé
2024-06-12 17:06 ` Daniel P. Berrangé
2024-06-12 17:00 ` Daniel P. Berrangé
2024-06-12 17:08 ` Paolo Bonzini
2024-06-23 21:27 ` Alexander Monakov
2024-06-23 22:14 ` Richard Henderson
2024-06-12 11:14 ` Alexander Monakov
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