search for: mbi_memlimits

...$10-4,%eax + /* Set up trampoline segment just below end of base memory. + * Prefer to get this information from the multiboot + * structure, if available. + */ + mov 4(%ebx),%eax /* kb of low memory */ + testb $1,(%ebx) /* test MBI_MEMLIMITS */ + jnz 1f + + movzwl 0x413,%eax /* base memory size in kb */ 1: + shl $10-4,%eax /* convert to a segment number */ + + /* Reserve 64kb for the trampoline */ sub $0x1000,%eax /* From arch/x86/smpboot.c: start_eip had b...

...e multiboot loader more than the other. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Retain the previous code, thus using the multiboot value only if it''s sane but lower than the BDA computed one. Also use the full 32-bit mem_lower value and prefer MBI_MEMLIMITS over open coding it (requiring a slight adjustment to multiboot.h to make its constants actually usable in assembly code, which previously they were only meant to be). Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Keir Fraser <keir@xen.org> Committed-...