[Xen-devel] [PATCH 1/4] xen: Take into account Xen control interface changes since Xen Ver. 4.1

[Rajendra Bele]

Dear Friends,
I am pursuing Ph.D. in virtualization,
I want to study detail architecture and implementation of Xen
As I wanted to start from scratch ,can you suggest some guidance or resource
for it.
Thanking you
Rajendra Bele
Pune,India

On Sun, Aug 21, 2011 at 7:36 PM, Daniel Kiper <dkiper at net-space.pl> wrote:

> xc_interface_open() receive three arguments instead of void and returns
> pointer to xc_interface type instead of int since Xen Ver. 4.1. Take into
> account that and allow kexec-tools compilation with all versions of Xen.
>
> Signed-off-by: Daniel Kiper <dkiper at net-space.pl>
> ---
>  kexec/crashdump-xen.c |   15 ++++++++++++++-
>  1 files changed, 14 insertions(+), 1 deletions(-)
>
> diff --git a/kexec/crashdump-xen.c b/kexec/crashdump-xen.c
> index b347764..9dfabf8 100644
> --- a/kexec/crashdump-xen.c
> +++ b/kexec/crashdump-xen.c
> @@ -126,19 +126,32 @@ unsigned long xen_architecture(struct crash_elf_info
> *elf_info)
>  {
>        unsigned long machine = elf_info->machine;
>  #ifdef HAVE_LIBXENCTRL
> -       int xc, rc;
> +       int rc;
>        xen_capabilities_info_t capabilities;
> +#ifdef XENCTRL_HAS_XC_INTERFACE
> +       xc_interface *xc;
> +#else
> +       int xc;
> +#endif
>
>        if (!xen_present())
>                goto out;
>
>        memset(capabilities, '0', XEN_CAPABILITIES_INFO_LEN);
>
> +#ifdef XENCTRL_HAS_XC_INTERFACE
> +       xc = xc_interface_open(NULL, NULL, 0);
> +       if ( !xc ) {
> +               fprintf(stderr, "failed to open xen control interface.\n");
> +               goto out;
> +       }
> +#else
>        xc = xc_interface_open();
>        if ( xc == -1 ) {
>                fprintf(stderr, "failed to open xen control interface.\n");
>                goto out;
>        }
> +#endif
>
>        rc = xc_version(xc, XENVER_capabilities, &capabilities[0]);
>        if ( rc == -1 ) {
> --
> 1.5.6.5
>
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>
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