Gleb Natapov wrote:
On Mon, May 11, 2009 at 01:29:43PM -0400, Beth Kon wrote:
Signed-off-by: Beth Kon <eak@xxxxxxxxxx>
diff --git a/kvm/bios/rombios32.c b/kvm/bios/rombios32.c
index cbd5f15..53359b8 100755
--- a/kvm/bios/rombios32.c
+++ b/kvm/bios/rombios32.c
@@ -444,6 +444,9 @@ uint32_t cpuid_features;
uint32_t cpuid_ext_features;
unsigned long ram_size;
uint64_t ram_end;
+#ifdef BX_QEMU
+uint8_t irq0_override;
+#endif
#ifdef BX_USE_EBDA_TABLES
unsigned long ebda_cur_addr;
#endif
@@ -485,6 +488,7 @@ void wrmsr_smp(uint32_t index, uint64_t val)
#define QEMU_CFG_ARCH_LOCAL 0x8000
#define QEMU_CFG_ACPI_TABLES (QEMU_CFG_ARCH_LOCAL + 0)
#define QEMU_CFG_SMBIOS_ENTRIES (QEMU_CFG_ARCH_LOCAL + 1)
+#define QEMU_CFG_IRQ0_OVERRIDE (QEMU_CFG_ARCH_LOCAL + 2)
int qemu_cfg_port;
@@ -553,6 +557,18 @@ uint64_t qemu_cfg_get64 (void)
}
#endif
+#ifdef BX_QEMU
+void irq0_override_probe(void)
+{
+ if(qemu_cfg_port) {
+ qemu_cfg_select(QEMU_CFG_IRQ0_OVERRIDE);
+ qemu_cfg_read(&irq0_override, 1);
+ return;
+ }
+ memset(&irq0_override, 0, 1);
+}
Why memset and not irq0_override = 0, actually it should zero already.
This was an oversight, left over from some early cut-and-paste coding I
was doing. You're right - not necessary. Thanks.
--
Gleb.
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