fix race in holding() check in acquire()

give cpu1 a TSS and gdt for when it enters scheduler()
and a pseudo proc[] entry for each cpu
cpu0 waits for each other cpu to start up
read() for files

1 files changed, 3 insertions, 3 deletions

diff --git a/ioapic.c b/ioapic.c
index 776f895..b926863 100644
--- a/ioapic.c
+++ b/ioapic.c
@@ -65,7 +65,7 @@ ioapic_init(void)
 }
 
 void
-ioapic_enable (int irq, int cpu)
+ioapic_enable (int irq, int cpunum)
 {
   uint l, h;
   struct ioapic *io;
@@ -76,7 +76,7 @@ ioapic_enable (int irq, int cpu)
   ioapic_write(io, IOAPIC_REDTBL_LO(irq), l);
   h = ioapic_read(io, IOAPIC_REDTBL_HI(irq));
   h &= ~IOART_DEST;
-  h |= (cpu << APIC_ID_SHIFT);  // for fun, disk interrupts to cpu 1
+  h |= (cpunum << APIC_ID_SHIFT);  // for fun, disk interrupts to cpu 1
   ioapic_write(io, IOAPIC_REDTBL_HI(irq), h);
-  cprintf("intr %d: lo 0x%x hi 0x%x\n", irq, l, h);
+  cprintf("cpu%d: intr %d: lo 0x%x hi 0x%x\n", cpu(), irq, l, h);
 }