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Re: [PATCH v6 03/19] xen/riscv: introduce VMID allocation and manegement
- To: Teddy Astie <teddy.astie@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 9 Dec 2025 08:51:12 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Alistair Francis <alistair.francis@xxxxxxx>, Bob Eshleman <bobbyeshleman@xxxxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 09 Dec 2025 07:51:16 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 08.12.2025 18:28, Teddy Astie wrote:
> Le 24/11/2025 à 13:36, Oleksii Kurochko a écrit :
>> diff --git a/docs/misc/xen-command-line.pandoc
>> b/docs/misc/xen-command-line.pandoc
>> index 34004ce282..6c4bfa3603 100644
>> --- a/docs/misc/xen-command-line.pandoc
>> +++ b/docs/misc/xen-command-line.pandoc
>> @@ -3096,3 +3096,12 @@ the hypervisor was compiled with `CONFIG_XSM` enabled.
>> * `silo`: this will deny any unmediated communication channels between
>> unprivileged VMs. To choose this, the separated option in kconfig must
>> also
>> be enabled.
>> +
>> +### vmid (RISC-V)
>> +> `= <boolean>`
>> +
>> +> Default: `true`
>> +
>> +Permit Xen to use Virtual Machine Identifiers. This is an optimisation which
>> +tags the TLB entries with an ID per vcpu. This allows for guest TLB flushes
>> +to be performed without the overhead of a complete TLB flush.
>
> Should we regroup all asid/vpid/vmid (which are pretty much the same
> thing with different names and for different arch) under a single
> command-line option ?
How would you name such an option, without losing it being recognized by people
knowing the respective arch?
Jan
|
