15 Dec
2025
15 Dec
'25
9:33 a.m.
On Sun, 14 Dec 2025 11:22:48 +0000, Yeoreum Yun yeoreum.yun@arm.com wrote:
Apply the FEAT_LSUI instruction to emulate the deprecated swpX instruction, so that toggling of the PSTATE.PAN bit can be removed when LSUI-related instructions are used.
Signed-off-by: Yeoreum Yun yeoreum.yun@arm.com
It really begs the question: what are the odds of ever seeing a CPU that implements both LSUI and AArch32?
This seems extremely unlikely to me.
M.
--
Without deviation from the norm, progress is not possible.