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File:  [Qemu by Fabrice Bellard] / qemu / pc-bios / bios-pq / 0005_kvm-bios-fix-smbios-memory-device-length-boundary--condition.patch
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:55:32 2018 UTC (8 years, 3 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu0111, qemu0110, qemu0105, qemu0104, qemu0103, qemu0102, qemu0101, qemu0100, HEAD
qemu 0.10.0

fix smbios memory device length boundary  condition (Bill Rieske)

dev_memsize ends up 0 when it shouldn't be on 16G boundary conditions.
    
Signed-off-by: Bill Rieske <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
Signed-off-by: Anthony Liguori <[email protected]>

Index: bochs/bios/rombios32.c
===================================================================
--- bochs.orig/bios/rombios32.c
+++ bochs/bios/rombios32.c
@@ -2218,7 +2218,7 @@ void smbios_init(void)
     for ( i = 0; i < nr_mem_devs; i++ )
     {
         uint32_t dev_memsize = ((i == (nr_mem_devs - 1))
-                                ? (memsize & 0x3fff) : 0x4000);
+                                ? (((memsize-1) & 0x3fff)+1) : 0x4000);
         add_struct(smbios_type_17_init(p, dev_memsize, i));
         add_struct(smbios_type_19_init(p, dev_memsize, i));
         add_struct(smbios_type_20_init(p, dev_memsize, i));
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