On 02/24/2011 11:48 PM, Anthony Liguori wrote:
I'm not sure if this was intentional but the QEMU i8259 does not support this flag. I haven't observed any issues with this but I'll happily admit that I'm not very aware of what I'm doing here.Signed-off-by: Anthony Liguori<aligu...@us.ibm.com> static u32 xapic_read(unsigned reg) { return *(volatile u32 *)(g_apic + reg); @@ -133,7 +129,7 @@ void ioapic_write_redir(unsigned line, ioapic_redir_entry_t e) void enable_apic(void) { printf("enabling apic\n"); - xapic_write(0xf0, 0x1ff); /* spurious vector register */ + xapic_write(0xf0, 0x1f7); /* spurious vector register */ }
Not sure what you're doing here. You're changing the APIC Spurious Vector from 0xff to 0xf7? This has nothing to do with the i8259 or level triggeredness as far as I can tell - it just enables the APIC (bit 8) and selects a vector for reporting spurious interrupts (0xff happens to be the reset value).
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