Diffusion FreeBSD src repository 43b3e755d075

arm64: use FEAT_WFxT for DELAY() when available
43b3e755d075
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Description

arm64: use FEAT_WFxT for DELAY() when available

Use a wfet, rather than a busy wait, in DELAY() when the FEAT_WFxT
extension is available.

Reviewed by: andrew
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D48580
Signed-off-by: Harry Moulton <harry.moulton@arm.com>

Details

Provenance

harry.moulton_arm.com	Authored on Mon, Feb 17, 4:01 PM
andrew	Committed on Mon, Feb 17, 4:07 PM

Reviewer

andrew

Differential Revision

D48580: arm64: use FEAT_WFxT for DELAY() when available

Parents

rG76c38c2f2e02: arm64: add missing feature identification to align with ARMv8.9

Branches

Unknown

Tags

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Event Timeline

andrew committed rG43b3e755d075: arm64: use FEAT_WFxT for DELAY() when available (authored by harry.moulton_arm.com).Mon, Feb 17, 4:07 PM

andrew added an edge: D48580: arm64: use FEAT_WFxT for DELAY() when available.Mon, Feb 17, 4:37 PM

Changes (1)

Path

Size

sys/

arm/

generic_timer.c

rG43b3e755d075

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sys/arm/arm/generic_timer.c