From: Jan Beulich <jbeulich@suse.com>
To: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
"Teddy Astie" <teddy.astie@vates.tech>,
"Roger Pau Monné" <roger@xenproject.org>,
"Jason Andryuk" <jason.andryuk@amd.com>
Subject: [PATCH v4 0/3] x86: allow Kconfig control over psABI level
Date: Thu, 15 Oct 2026 11:08:05 +0200 [thread overview]
Message-ID: <b6ae837e-293a-4c06-aefa-02a5b9cd2c3f@suse.com> (raw)
As discussed in Prague.
v4 drops the apparently controversial patch "build: permit Kconfig control
over how to deal with unsatisfiable choices" and updates things now that
gcc5 is our baseline.
1: allow Kconfig control over psABI level
2: use POPCNT for hweight<N>() when available
3: short-circuit certain cpu_has_* when x86-64-v{2,3} are in effect
Jan
next reply other threads:[~2026-10-15 9:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-15 9:08 Jan Beulich [this message]
2026-10-15 9:09 ` [PATCH v4 1/3] x86: allow Kconfig control over psABI level to use Jan Beulich
2026-10-15 9:10 ` [PATCH v4 2/3] x86: use __builtin_popcountl() for arch_hweightl() when available Jan Beulich
2026-10-15 10:37 ` Andrew Cooper
2026-10-15 12:22 ` Jan Beulich
2026-10-15 9:11 ` [PATCH v4 3/3] x86: short-circuit certain cpu_has_* when x86-64-v{2,3} are in effect Jan Beulich
2026-10-19 9:34 ` Roger Pau Monné
2026-10-19 9:57 ` Alejandro Vallejo
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