Description: Allow SeaBIOS greater than 128k in size
 SeaBIOS 1.7.4+ can be larger than 128k, causing hvmloader to be incorrectly
 contsructed.  This results in immediate, silent failure of guests.
 .
 xen (4.3.0-3+ntap3) unstable; urgency=medium
 .
   * Backport SeaBIOS 1.7.4 support from upstream Xen 4.3.1
Origin: upstream, http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=5f2875739beef3a75c7a7e8579b6cbcb464e61b3
Author: Jan Beulich <jbeulich@suse.com>

--- xen-4.3.0.orig/tools/firmware/hvmloader/config-seabios.h
+++ xen-4.3.0/tools/firmware/hvmloader/config-seabios.h
@@ -3,8 +3,6 @@
 
 #define BIOS_INFO_PHYSICAL_ADDRESS  0x00001000
 
-#define SEABIOS_PHYSICAL_ADDRESS    0x000E0000
-
 #endif /* __HVMLOADER_CONFIG_SEABIOS_H__ */
 
 /*
--- xen-4.3.0.orig/tools/firmware/hvmloader/hvmloader.c
+++ xen-4.3.0/tools/firmware/hvmloader/hvmloader.c
@@ -292,8 +292,12 @@ int main(void)
     if ( bios->bios_load )
         bios->bios_load(bios);
     else
+    {
+        BUG_ON(bios->bios_address + bios->image_size >
+               HVMLOADER_PHYSICAL_ADDRESS);
         memcpy((void *)bios->bios_address, bios->image,
                bios->image_size);
+    }
 
     if ( (hvm_info->nr_vcpus > 1) || hvm_info->apic_mode )
     {
--- xen-4.3.0.orig/tools/firmware/hvmloader/rombios.c
+++ xen-4.3.0/tools/firmware/hvmloader/rombios.c
@@ -127,6 +127,8 @@ static void rombios_load(const struct bi
     uint32_t bioshigh;
     struct rombios_info *info;
 
+    BUILD_BUG_ON(sizeof(rombios) > 0x100000 - ROMBIOS_PHYSICAL_ADDRESS);
+
     memcpy((void *)config->bios_address, config->image,
            config->image_size);
 
@@ -206,8 +208,6 @@ static void rombios_create_smbios_tables
         SMBIOS_PHYSICAL_END);
 }
 
-//BUILD_BUG_ON(sizeof(rombios) > (0x00100000U - ROMBIOS_PHYSICAL_ADDRESS));
-
 struct bios_config rombios_config =  {
     .name = "ROMBIOS",
 
--- xen-4.3.0.orig/tools/firmware/hvmloader/seabios.c
+++ xen-4.3.0/tools/firmware/hvmloader/seabios.c
@@ -133,15 +133,13 @@ static void seabios_setup_e820(void)
     dump_e820_table(e820, info->e820_nr);
 }
 
-//BUILD_BUG_ON(sizeof(seabios) > (0x00100000U - SEABIOS_PHYSICAL_ADDRESS));
-
 struct bios_config seabios_config = {
     .name = "SeaBIOS",
 
     .image = seabios,
     .image_size = sizeof(seabios),
 
-    .bios_address = SEABIOS_PHYSICAL_ADDRESS,
+    .bios_address = 0x100000 - sizeof(seabios),
 
     .load_roms = NULL,