[Xen-devel] [PATCH 2/5] xen: Use init_tss array or per_cpu__init_tss

[Daniel Kiper <daniel.kiper@xxxxxxxxxx>]

Newer Xen versions (at least 4.2) use per_cpu__init_tss
instead of init_tss array. Take into account that.

Signed-off-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx>

diff -Npru crash-6.1.0.orig/x86.c crash-6.1.0/x86.c
--- crash-6.1.0.orig/x86.c      2012-11-13 14:45:58.000000000 +0100
+++ crash-6.1.0/x86.c   2012-11-13 14:48:13.000000000 +0100
@@ -5471,9 +5471,16 @@ x86_get_stackbase_hyper(ulong task)
        if (!xen_hyper_test_pcpu_id(pcpu)) {
                error(FATAL, "invalid pcpu number\n");
        }
-       init_tss = symbol_value("init_tss");
+
+       if (symbol_exists("init_tss")) {
+               init_tss = symbol_value("init_tss");
+               init_tss += XEN_HYPER_SIZE(tss_struct) * pcpu;
+       } else {
+               init_tss = symbol_value("per_cpu__init_tss");
+               init_tss = xen_hyper_per_cpu(init_tss, pcpu);
+       }
+       
        buf = GETBUF(XEN_HYPER_SIZE(tss_struct));
-       init_tss += XEN_HYPER_SIZE(tss_struct) * pcpu;
        if (!readmem(init_tss, KVADDR, buf,
                        XEN_HYPER_SIZE(tss_struct), "init_tss", 
RETURN_ON_ERROR)) {
                error(FATAL, "cannot read init_tss.\n");

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