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Re: [PATCH v2 37/39] xen/riscv: map IMSIC interrupt file for vCPUs
- To: Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>
- From: Baptiste Le Duc <baptiste.le-duc@xxxxxxxxxx>
- Date: Fri, 25 Sep 2026 11:22:11 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, Romain Caritey <Romain.Caritey@xxxxxxxxxxxxx>, Baptiste Le Duc <baptiste.le-duc@xxxxxxxxxx>, Zheng Zhang <zhangzheng@xxxxxxxxxxx>, Alistair Francis <alistair.francis@xxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger@xxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
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On Thu, 27 Aug 2026 17:21:21 +0200, Oleksii Kurochko
<oleksii.kurochko@xxxxxxxxx> wrote:
> A guest running in VS-mode expects its own IMSIC S-file at offset 0 of its
> guest-physical IMSIC block. Physically, the guest-file (G-file) assigned to
> this vCPU lives at a hart-relative offset given by guest_file_id (assigned
> via the vGEIN allocator). Therefore, imsic_map_guest_file() uses stage-2
> translation to redirect the guest's fixed per-vCPU GPA page (offset 0) to
> the specific physical guest-file page.
>
> [...]
Reviewed-by: Baptiste Le Duc <baptiste.le-duc@xxxxxxxxxx>
--
Baptiste Le Duc <baptiste.le-duc@xxxxxxxxxx>
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