Re: 2.6.23-rc2: WARNING: at kernel/irq/resend.c:70 check_irq_resend()

[Jean-Baptiste Vignaud]

see below

>  arch/i386/kernel/io_apic.c   |    3 ++-
>  arch/x86_64/kernel/genapic.c |    3 ++-
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> Index: linux/arch/i386/kernel/io_apic.c
> ===================================================================
> --- linux.orig/arch/i386/kernel/io_apic.c
> +++ linux/arch/i386/kernel/io_apic.c
> @@ -735,7 +735,8 @@ void fastcall send_IPI_self(int vector)
>  	 * Wait for idle.
>  	 */
>  	apic_wait_icr_idle();
> -	cfg = APIC_DM_FIXED | APIC_DEST_SELF | vector | APIC_DEST_LOGICAL;
> +	cfg = APIC_DM_FIXED | APIC_DEST_SELF | vector | APIC_DEST_LOGICAL |
> +		APIC_INT_LEVELTRIG;
>  	/*
>  	 * Send the IPI. The write to APIC_ICR fires this off.
>  	 */
> Index: linux/arch/x86_64/kernel/genapic.c
> ===================================================================
> --- linux.orig/arch/x86_64/kernel/genapic.c
> +++ linux/arch/x86_64/kernel/genapic.c
> @@ -62,5 +62,6 @@ void __init setup_apic_routing(void)
>  
>  void send_IPI_self(int vector)
>  {
> -	__send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL);
> +	__send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL |
> +			    APIC_INT_LEVELTRIG);
>  }
>

clean 2.6.23-rc1 with this patch : 

Aug 10 14:12:09 loki kernel: NETDEV WATCHDOG: eth2: transmit timed out
Aug 10 14:12:09 loki kernel: eth2: transmit timed out, tx_status 00 status e601.
Aug 10 14:12:09 loki kernel:   diagnostics: net 0ccc media 8880 dma 0000003a fifo 8000
Aug 10 14:12:09 loki kernel: eth2: Interrupt posted but not delivered -- IRQ blocked by another device?
Aug 10 14:12:09 loki kernel:   Flags; bus-master 1, dirty 231829(5) current 231829(5)
Aug 10 14:12:09 loki kernel:   Transmit list 00000000 vs. ffff81007eaad520.
Aug 10 14:12:09 loki kernel:   0: @ffff81007eaad200  length 80000115 status 0c010115
Aug 10 14:12:09 loki kernel:   1: @ffff81007eaad2a0  length 8000005c status 0c01005c
Aug 10 14:12:09 loki kernel:   2: @ffff81007eaad340  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   3: @ffff81007eaad3e0  length 8000002a status 8001002a 
Aug 10 14:12:09 loki kernel:   4: @ffff81007eaad480  length 8000005c status 8c01005c
Aug 10 14:12:09 loki kernel:   5: @ffff81007eaad520  length 80000042 status 00010042
Aug 10 14:12:09 loki kernel:   6: @ffff81007eaad5c0  length 8000007b status 0001007b
Aug 10 14:12:09 loki kernel:   7: @ffff81007eaad660  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   8: @ffff81007eaad700  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   9: @ffff81007eaad7a0  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   10: @ffff81007eaad840  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   11: @ffff81007eaad8e0  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   12: @ffff81007eaad980  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   13: @ffff81007eaada20  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   14: @ffff81007eaadac0  length 8000002a status 0001002a
Aug 10 14:12:09 loki kernel:   15: @ffff81007eaadb60  length 8000002a status 0001002a

I did not had to wait too long for this to occurs (1-2 minutes).

Jb


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