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Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback |
Date: |
Sun, 30 May 2010 19:37:59 +0000 |
On Sun, May 30, 2010 at 1:49 PM, Gleb Natapov <address@hidden> wrote:
> On Sun, May 30, 2010 at 12:56:26PM +0000, Blue Swirl wrote:
>> >> Well, I'd like to get the test program also trigger it. Now I'm getting:
>> >> apic: write: 00000350 = 00000000
>> >> apic: apic_reset_irq_delivered: old coalescing 0
>> >> apic: apic_local_deliver: vector 3 delivery mode 0
>> >> apic: apic_set_irq: coalescing 1
>> >> apic: apic_get_irq_delivered: returning coalescing 1
>> >> apic: apic_reset_irq_delivered: old coalescing 1
>> >> apic: apic_local_deliver: vector 3 delivery mode 0
>> >> apic: apic_set_irq: coalescing 0
>> >> apic: apic_get_irq_delivered: returning coalescing 0
>> >> apic: apic_reset_irq_delivered: old coalescing 0
>> >> apic: apic_local_deliver: vector 3 delivery mode 0
>> >> apic: apic_set_irq: coalescing 0
>> >>
> So interrupt is _alway_ coalesced. If apic_get_irq_delivered() returns
> 0 it means the interrupt was not delivered.
That seems strange. I changed the program so that the handler gets
executed, also output a dot to serial from the handler. I changed the
frequency to 2Hz.
Now, if I leave out -rtc-td-hack, I get the dots at 2Hz as expected.
With -rtc-td-hack, the dots come out much faster. I added
DEBUG_COALESCING also to RTC, with that enabled I get:
qemu -L . -bios coalescing.bin -d in_asm,int -no-hpet -rtc-td-hack -serial stdio
cmos: coalesced irqs scaled to 0
cmos: coalesced irqs increased to 1
cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
.cmos: injecting on ack
..cmos: injecting from timer
.cmos: coalesced irqs increased to 2
cmos: injecting on ack
So, there are bogus injections.
coalescing.S
Description: Binary data
coalescing.bin.bz2
Description: BZip2 compressed data
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, (continued)
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/31
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback,
Blue Swirl <=
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/31
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/30
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Blue Swirl, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Jan Kiszka, 2010/05/29
- Re: [Qemu-devel] Re: [RFT][PATCH 07/15] qemu_irq: Add IRQ handlers with delivery feedback, Gleb Natapov, 2010/05/27