[Qemu-devel] [PATCH 3/3] PPC: Round VGA BIOS size to page boundary

[Alexander Graf <agraf@suse.de>]

When giving KVM a slot of a size not on page boundary, it chokes. So let's
just round up the VGA BIOS size so nobody complains anymore and we don't need
to implement sub-page slots.

Required for booting a PPC guest in KVM.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
 hw/ppc_newworld.c |    3 +++
 hw/ppc_oldworld.c |    4 ++++
 2 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/hw/ppc_newworld.c b/hw/ppc_newworld.c
index 4e5043c..b28a23d 100644
--- a/hw/ppc_newworld.c
+++ b/hw/ppc_newworld.c
@@ -179,6 +179,9 @@ static void ppc_core99_init (ram_addr_t ram_size,
         vga_bios_ptr[3] = 'V';
         cpu_to_be32w((uint32_t *)(vga_bios_ptr + 4), vga_bios_size);
         vga_bios_size += 8;
+
+        /* Round to page boundary */
+        vga_bios_size = (vga_bios_size + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK;
     }
 
     if (linux_boot) {
diff --git a/hw/ppc_oldworld.c b/hw/ppc_oldworld.c
index b26e407..0daa25b 100644
--- a/hw/ppc_oldworld.c
+++ b/hw/ppc_oldworld.c
@@ -212,6 +212,9 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
         vga_bios_ptr[3] = 'V';
         cpu_to_be32w((uint32_t *)(vga_bios_ptr + 4), vga_bios_size);
         vga_bios_size += 8;
+
+        /* Round to page boundary */
+        vga_bios_size = (vga_bios_size + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK;
     }
 
     if (linux_boot) {
@@ -310,6 +313,7 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
     pic = heathrow_pic_init(&pic_mem_index, 1, heathrow_irqs);
     pci_bus = pci_grackle_init(0xfec00000, pic);
     pci_vga_init(pci_bus, vga_bios_offset, vga_bios_size);
+printf("Mapping VGA to 0x%lx - 0x%lx\n", vga_bios_offset, vga_bios_offset + vga_bios_size);
 
     escc_mem_index = escc_init(0x80013000, pic[0x0f], pic[0x10], serial_hds[0],
                                serial_hds[1], ESCC_CLOCK, 4);
-- 
1.6.0.2