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[PATCH v2 0/4] x86: allow Kconfig control over psABI level
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 19 Jul 2023 11:42:14 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Wed, 19 Jul 2023 09:42:28 +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).
v2 addresses issues found as well as review feedback; see individual
patches for details. It (patch 2 in particular) raises several new
questions as well, though.
1: build: make cc-option properly deal with unrecognized sub-options
2: allow Kconfig control over psABI level
3: use POPCNT for hweight<N>() when available
4: short-circuit certain cpu_has_* when x86-64-v{2,3} are in effect
Jan
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