[off-list, as I'm having bouncing issues]
Hi,
On 17/11/2025 21:00, Catalin Marinas wrote:
From: Catalin Marinas <[email protected]>
On Wed, 15 Oct 2025 18:56:35 +0100, Mark Brown wrote:
Currently it is not possible to disable streaming mode via ptrace on SME
only systems, the interface for doing this is to write via NT_ARM_SVE but
such writes will be rejected on a system without SVE support. Enable this
functionality by allowing userspace to write SVE_PT_REGS_FPSIMD format data
via NT_ARM_SVE with the vector length set to 0 on SME only systems. Such
writes currently error since we require that a vector length is specified
which should minimise the risk that existing software is relying on current
behaviour.
[...]
I don't think we'll get gdb feedback soon. Thanks David for the LLDB
ack.
Unfortunately this flew under the radar for me, and I haven´t been
following these discussions closely.
Is there someone working to rectify/validate this in GDB from Arm's side?
I´d gladly review it and get it through into upstream gdb.
