[Xen-devel] [PATCH 11 of 15] hvmloader: allow create_mp_tables() to allocate the table

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1306917709 -3600
# Node ID 5357077295f21154b076925d1d4687b076de6bfc
# Parent  361304106d85f61cdeffd5805c46520feac19e89
hvmloader: allow create_mp_tables() to allocate the table

Will be used by SeaBIOS.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

diff -r 361304106d85 -r 5357077295f2 tools/firmware/hvmloader/mp_tables.c
--- a/tools/firmware/hvmloader/mp_tables.c      Wed Jun 01 09:37:13 2011 +0100
+++ b/tools/firmware/hvmloader/mp_tables.c      Wed Jun 01 09:41:49 2011 +0100
@@ -266,12 +266,27 @@ unsigned long create_mp_tables(void *_mp
     int vcpu_nr, i, length;
     void *base;
     struct mp_io_intr_entry *mpiie;
-    struct mp_floating_pointer_struct *mpfps = _mpfps;
+    struct mp_floating_pointer_struct *mpfps;
 
     vcpu_nr = hvm_info->nr_vcpus;
 
     printf("Creating MP tables ...\n");
 
+    if (!_mpfps) {
+        int sz;
+
+        sz  = sizeof(struct mp_floating_pointer_struct);
+        sz += sizeof(struct mp_config_table);
+        sz += sizeof(struct mp_proc_entry) * vcpu_nr;
+        sz += sizeof(struct mp_bus_entry);
+        sz += sizeof(struct mp_ioapic_entry);
+        sz += sizeof(struct mp_io_intr_entry) * 16;
+
+        base = mem_alloc(sz, 0);
+    }
+
+    mpfps = _mpfps;
+
     base = &mpfps[1];
 
     p = base + sizeof(struct mp_config_table);

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