Re: [Xen-devel] [PATCH v2 27/30] x86/msixtbl: disable MSI-X intercepts for domains without an ioreq server

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 27.09.16 at 17:57, <roger.pau@xxxxxxxxxx> wrote:
> The current msixtbl intercepts only partially trap MSI-X accesses, but are
> not complete, there's missing logic in order to setup PIRQs and bind them to
> domains. Disable them for domains without at least an ioreq server (PVH).

So what if a server registers later on?

> --- a/xen/arch/x86/hvm/ioreq.c
> +++ b/xen/arch/x86/hvm/ioreq.c
> @@ -772,6 +772,17 @@ int hvm_destroy_ioreq_server(struct domain *d, 
> ioservid_t id)
>      return rc;
>  }
>  
> +int hvm_has_ioreq_server(struct domain *d)

bool

> +{
> +    int empty;

bool

> --- a/xen/drivers/passthrough/io.c
> +++ b/xen/drivers/passthrough/io.c
> @@ -24,6 +24,7 @@
>  #include <asm/hvm/irq.h>
>  #include <asm/hvm/support.h>
>  #include <xen/hvm/irq.h>
> +#include <asm/hvm/ioreq.h>
>  #include <asm/io_apic.h>

Please group with the other asm/hvm/ ones.

Jan


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