[PATCH] support piix PAM registers in KVM

Gleb Natapov
2010-09-21T12:31:58Z

Without this BIOS fails to remap 0xf0000 memory from ROM to RAM so writes
to F-segment modify ROM content instead of memory copy. Since QEMU does
not reloads ROMs during reset on next boot modified copy of BIOS is used.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index 933ad86..0bf435d 100644
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -99,10 +99,6 @@ static void i440fx_update_memory_mappings(PCII440FXState *d)
int i, r;
uint32_t smram, addr;

- if (kvm_enabled()) {
- /* FIXME: Support remappings and protection changes. */
- return;
- }
update_pam(d, 0xf0000, 0x100000, (d->dev.config[I440FX_PAM] >> 4) & 3);
for(i = 0; i < 12; i++) {
r = (d->dev.config[(i >> 1) + (I440FX_PAM + 1)] >> ((i & 1) * 4)) & 3;
--
Gleb.