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Add HPET emulation to qemu (Beth Kon)

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This patch adds HPET emulation.  It can be disabled with -disable-hpet.  An hpet
provides a more finely granular clocksource than otherwise available on PC.
This means that latency-dependent applications (e.g. multimedia) will generally
be smoother when using the HPET.

Signed-off-by: Beth Kon <eak@us.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6081 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-12-17 23:28:44 +00:00
parent 0bacd1300d
commit 16b29ae180
13 changed files with 938 additions and 6 deletions
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7
hw/apic.c
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@ -945,6 +945,13 @@ void ioapic_set_irq(void *opaque, int vector, int level)
{
IOAPICState *s = opaque;
/* ISA IRQs map to GSI 1-1 except for IRQ0 which maps
* to GSI 2. GSI maps to ioapic 1-1. This is not
* the cleanest way of doing it but it should work. */
if (vector == 0)
vector = 2;
if (vector >= 0 && vector < IOAPIC_NUM_PINS) {
uint32_t mask = 1 << vector;
uint64_t entry = s->ioredtbl[vector];