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Re: [PATCH 2/2] tools/libxl: Skip missing PCI GSIs
- To: Jason Andryuk <jason.andryuk@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 27 Feb 2025 09:25:27 +0100
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- Cc: Jiqian Chen <Jiqian.Chen@xxxxxxx>, Huang Rui <ray.huang@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 27 Feb 2025 08:25:31 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 26.02.2025 21:10, Jason Andryuk wrote:
> --- a/tools/libs/light/libxl_x86.c
> +++ b/tools/libs/light/libxl_x86.c
> @@ -901,7 +901,10 @@ int libxl__arch_hvm_map_gsi(libxl__gc *gc, uint32_t
> sbdf, uint32_t domid)
> int pirq = -1, gsi, r;
>
> gsi = xc_pcidev_get_gsi(CTX->xch, sbdf);
> - if (gsi < 0) {
> + if (gsi == -1 && errno == ENOENT) {
> + LOGD(DEBUG, domid, "xc_pcidev_get_gsi no gsi");
> + return 0;
> + } else if (gsi < 0) {
> return ERROR_FAIL;
> }
>
> @@ -925,7 +928,10 @@ int libxl__arch_hvm_unmap_gsi(libxl__gc *gc, uint32_t
> sbdf, uint32_t domid)
> int pirq = -1, gsi, r;
>
> gsi = xc_pcidev_get_gsi(CTX->xch, sbdf);
> - if (gsi < 0) {
> + if (gsi == -1 && errno == ENOENT) {
> + LOGD(DEBUG, domid, "xc_pcidev_get_gsi no gsi");
> + return 0;
> + } else if (gsi < 0) {
> return ERROR_FAIL;
> }
>
Why the special-casing of the value -1?
Jan
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