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i8259: don't abort when trying to use level sensitive irqs 

This is a guest-triggerable error, as seen when using Xenix 2.3.4.
Replace hw_error by LOG_UNIMPL, so that guests can continue.
With this patch, I can install and use Xenix 2.3.4a without any problem.
I can also start installation of Xenix 2.3.4q, but it fails due to not
finding an hard disk.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Hervé Poussineau 2014-04-22 23:00:31 +02:00 committed by Michael S. Tsirkin
parent 9ac1c4c07e
commit 8cbad670ce
1 changed files with 2 additions and 1 deletions
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3
hw/intc/i8259.c
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@ -265,7 +265,8 @@ static void pic_ioport_write(void *opaque, hwaddr addr64,
s->init4 = val & 1;
s->single_mode = val & 2;
if (val & 0x08) {
hw_error("level sensitive irq not supported");
qemu_log_mask(LOG_UNIMP,
"i8259: level sensitive irq not supported\n");
}
} else if (val & 0x08) {
if (val & 0x04) {