Imbus/xv6-riscv-kernel
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fix race in holding() check in acquire()

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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
This commit is contained in:
rtm 2006-08-08 19:58:06 +00:00
parent e8d11c2e84
commit 0e84a0ec6e
20 changed files with 209 additions and 55 deletions
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6
ioapic.c
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@ -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);
}