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[PATCH v3 0/5] x86: allow Kconfig control over psABI level
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 26 Jul 2023 12:31:54 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Wed, 26 Jul 2023 10:32:18 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
As discussed in Prague, with some minor add-ons (patch 2 replacing a much
older patch under the same title).
v3 addresses issues found as well as review feedback; see individual
patches for details. Patch 3 in particular continues to raises several
questions as well, though.
1: build: make cc-option properly deal with unrecognized sub-options
2: build: permit Kconfig control over how to deal with unsatisfiable choices
3: allow Kconfig control over psABI level
4: use POPCNT for hweight<N>() when available
5: short-circuit certain cpu_has_* when x86-64-v{2,3} are in effect
Jan
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