QEMU e820 reservation patch

Hi,

Kevin and I have agreed on the approach for this one now. So here is
the latest version of the patch for QEMU, submitting e820 reservation
entries via fw_cfg.

Cheers,
Jes

Use qemu-cfg to provide the BIOS with an optional table of e820 entries.

Notify the BIOS of the location of the TSS+EPT range to by reserving
it via the e820 table.

This matches a corresponding patch for Seabios, however older versions
of Seabios will default to the hardcoded address range and stay
compatible with current QEMU.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/hw/pc.h b/hw/pc.h
index 03ffc91536..92f8563609 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -150,4 +150,14 @@ void isa_cirrus_vga_init(void);
 void isa_ne2000_init(int base, int irq, NICInfo *nd);
 
 int cpu_is_bsp(CPUState *env);
+
+/* e820 types */
+#define E820_RAM        1
+#define E820_RESERVED   2
+#define E820_ACPI       3
+#define E820_NVS        4
+#define E820_UNUSABLE   5
+
+int e820_add_entry(uint64_t, uint64_t, uint32_t);
+
 #endif