On 2/10/24 20:06, Daniel Henrique Barboza wrote:
On 9/27/24 7:50 AM, Daniel P. Berrangé wrote:
Markus: QAPI design Qs for you at the bottom
On Wed, Sep 25, 2024 at 10:19:33AM -0300, Daniel Henrique Barboza wrote:
On 9/19/24 9:22 AM, Daniel P. Berrangé wrote:
On Thu, Sep 19, 2024 at 08:20:56AM -0300, Daniel Henrique Barboza
wrote:
Add a QMP command that shows all specific properties of the current
accelerator in use.
Why do we need to expose /everything/ ?
I wouldn't mind pick and choose advertised properties for the
accelerators
like we do with other APIs.
This would mean that each arch should choose what to advertise or
not, given that
some accelerator properties might be relevant just for some archs.
The API would
be implemented by each arch individually.
Well with qemu-system-any we might get multiple arches reporting
info in the same binary, so we'll need to fan out to fill in the
per-arch info, after doing a common base.
Hmmm, i wonder if qemu-system-any will support mixing KVM and TCG ?
ie KVM for the host native accelerator, combined with TCG for the
foreign archs ??? Hopefully not !
If you're talking about Phil's patches it seems that it'll be TCG only:
Orthogonaly to the single binary series (mentioned below with the
'any'-architecture target), we plan to add a "Dual HW/SW accelerator".
It will be implemented using the same AccelOps structure we currently
have, and internally it will dispatch between HW/SW. First prototype
plan to provide HVF+TCG.
IMHO query-accelerator should expose accelerator generic properties,
not the target-specific ones. At least by default, we could add an
optional flag to include target-specific stuff. At least that'd keep
the core accel core simpler.
https://lore.kernel.org/qemu-devel/20240305220938.85410-1-phi...@linaro.org/
Patch 2 commit msg states:
------
Add the 'any'-architecture target.
- Only consider 64-bit targets
- Do not use any hardware accelerator (except qtest)
- For architecture constants, use:
. max of supported targets phys/virt address space
. max of supported targets MMU modes
. min of supported targets variable page bits
------
Thanks,
Daniel
