[Crash-utility] [PATCH] Make XEN_VIRT_START depend on Xen version

[Dave Anderson]

----- Original Message -----
> The XEN_VIRT_START constant was changed in Xen4, so it can no longer be a
> simple define. Initialize it to its correct value depending on the Xen major
> version.
> 
> Signed-off-by: Petr Tesarik <ptesarik at suse.cz>

This patch looks fine -- queued for the next release.

Thanks,
  Dave

> ---
> xen_hyper.c | 7 +++++++
> xen_hyper_defs.h | 5 ++++-
> 2 files changed, 11 insertions(+), 1 deletion(-)
> 
> --- a/xen_hyper.c
> +++ b/xen_hyper.c
> @@ -42,6 +42,13 @@
> long member_offset;
> #endif
> 
> +#ifdef X86_64
> + if (xen_major_version() >= 4)
> + xht->xen_virt_start = 0xffff82c480000000;
> + else
> + xht->xen_virt_start = 0xffff828c80000000;
> +#endif
> +
> if (machine_type("X86_64") &&
> symbol_exists("xen_phys_start") && !xen_phys_start())
> error(WARNING,
> --- a/xen_hyper_defs.h
> +++ b/xen_hyper_defs.h
> @@ -65,7 +65,7 @@
> #define DIRECTMAP_VIRT_START (0xffff830000000000)
> #define DIRECTMAP_VIRT_END (0xffff840000000000)
> #define PAGE_OFFSET_XEN_HYPER DIRECTMAP_VIRT_START
> -#define XEN_VIRT_START (0xffff828c80000000)
> +#define XEN_VIRT_START (xht->xen_virt_start)
> #define XEN_VIRT_ADDR(vaddr) \
> (((vaddr) >= XEN_VIRT_START) && ((vaddr) < DIRECTMAP_VIRT_START))
> #endif
> @@ -408,6 +408,9 @@
> int percpu_shift;
> int idle_vcpu_size;
> ulong *idle_vcpu_array;
> +#ifdef X86_64
> + ulong xen_virt_start;
> +#endif
> };
> 
> struct xen_hyper_dumpinfo_context {
> 
> --
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