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Re: [Xen-devel] Interrupt injection with ISR set on Intel hardware

To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>

From: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Date: Wed, 12 Dec 2018 12:24:36 +0100

Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Delivery-date: Wed, 12 Dec 2018 11:25:23 +0000

List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On Wed, Dec 12, 2018 at 10:36:44AM +0000, Tian, Kevin wrote: > > From: Roger Pau Monné [mailto:roger.pau@xxxxxxxxxx] > > Sent: Monday, October 15, 2018 6:30 PM > > (XEN) [22642] POWER TYPE 4 > > (XEN) [22643] IDLE PPR 0x00000020 > > (XEN) IRR > > 00000000000000000000000000000000000000000000000000000000000000 > > 00 > > (XEN) ISR > > 00000000020000000000000000000000000000000000000000000000000000 > > 00 > > (XEN) [22644] WAKE PPR 0x00000020 > > (XEN) IRR > > 00000000020000000000000000000000000000000000000000000000000000 > > 00 > > (XEN) ISR > > 00000000020000000000000000000000000000000000000000000000000000 > > 00 > > looks pending IRR (0x21) doesn't always trigger a spurious interrupt? Yes, that's correct. Having a pending IRR and going idle doesn't always trigger the spurious interrupt re-injection. > is it a fixed pattern after how many rounds of Cstate enter/exit with > pending IRR(0x21) then you see assertion happened (in this example > it happens at 3rd time)? It's not a fixed pattern, here's another trace with IRR(0x21) being pending just once during the Cstate transitions: (XEN) *** Pending EOI error *** (XEN) cpu #1, irq 30, vector 0x21, sp 1 (XEN) Peoi stack: sp 1 (XEN) [ 0] irq 30, vec 0x21, ready 0, ISR 1, TMR 0, IRR 0 (XEN) Peoi stack trace records: (XEN) [ 7886] ACK_POST PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7887] POWER TYPE 5 (XEN) [ 7888] IDLE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7889] WAKE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000004 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7890] ACK_PRE PPR 0x000000f0 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000004 (XEN) [ 7891] ACK_POST PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7892] POWER TYPE 5 (XEN) [ 7893] IDLE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7894] WAKE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000004 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7895] ACK_PRE PPR 0x000000f0 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000004 (XEN) [ 7896] ACK_POST PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7897] POWER TYPE 5 (XEN) [ 7898] IDLE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7899] WAKE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000004 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7900] ACK_PRE PPR 0x000000f0 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000004 (XEN) [ 7901] ACK_POST PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7902] POWER TYPE 5 (XEN) [ 7903] IDLE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7904] WAKE PPR 0x00000010 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) [ 7905] PUSH {sp 0, irq 30, vec 0x21} (XEN) [ 7906] POWER TYPE 3 (XEN) [ 7907] IDLE PPR 0x00000020 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) [ 7908] WAKE PPR 0x00000020 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) [ 7909] POWER TYPE 3 (XEN) [ 7910] IDLE PPR 0x00000020 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) [ 7911] WAKE PPR 0x00000020 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) [ 7912] POWER TYPE 3 (XEN) [ 7913] IDLE PPR 0x00000020 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) [ 7914] WAKE PPR 0x00000020 (XEN) IRR 0000000000000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) [ 7915] POWER TYPE 3 (XEN) [ 7916] IDLE PPR 0x00000020 (XEN) IRR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) [ 7917] WAKE PPR 0x00000020 (XEN) IRR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) ISR 0000000002000000000000000000000000000000000000000000000000000000 (XEN) All LAPIC state: (XEN) [vector] ISR TMR IRR (XEN) [1f:00] 00000000 00000000 00000000 (XEN) [3f:20] 00000002 00000000 00000000 (XEN) [5f:40] 00000000 00000000 00000000 (XEN) [7f:60] 00000000 00000000 00000000 (XEN) [9f:80] 00000000 00000000 00000000 (XEN) [bf:a0] 00000000 00000000 00000000 (XEN) [df:c0] 00000000 00000000 00000000 (XEN) [ff:e0] 00000000 00000000 04000000 (XEN) Assertion '(sp == 0) || (peoi[sp-1].vector < vector)' failed at irq.c:1340 (XEN) ----[ Xen-4.12-unstable x86_64 debug=y Tainted: C ]---- (XEN) CPU: 1 (XEN) RIP: e008:[<ffff82d080288e1d>] do_IRQ+0x91c/0xb08 (XEN) RFLAGS: 0000000000010012 CONTEXT: hypervisor (XEN) rax: ffff83086c67002c rbx: 0000000000000180 rcx: 0000000000000000 (XEN) rdx: ffff83086c687fff rsi: 000000000000000a rdi: ffff83086c601e24 (XEN) rbp: ffff83086c687d98 rsp: ffff83086c687d38 r8: ffff83086c690000 (XEN) r9: 0000000000000030 r10: 0000000004000000 r11: 0000000000000007 (XEN) r12: 000000000000011f r13: 00000000ffffffff r14: ffff83086c601e00 (XEN) r15: ffff82cfffffb100 cr0: 0000000080050033 cr4: 00000000003526e0 (XEN) cr3: 0000000855b9f000 cr2: 00007f86c9ffd708 (XEN) fsb: 0000000000000000 gsb: 0000000000000000 gss: 0000000000000000 (XEN) ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: 0000 cs: e008 (XEN) Xen code around <ffff82d080288e1d> (do_IRQ+0x91c/0xb08): (XEN) 8d 7e 24 e8 6b 4c fb ff <0f> 0b 0f 0b 0f 0b 0f 0b b8 00 00 00 00 eb 4e 83 (XEN) Xen stack trace from rsp=ffff83086c687d38: (XEN) ffff82d000000000 ffff83086c601e24 0000000000000000 ffff83086c6704e0 (XEN) ffff82d080384841 ffff82d080384835 ffff82d080384841 0000000000000000 (XEN) 0000000000000000 0000000000000000 ffff83086c687fff 0000000000000000 (XEN) 00007cf793978237 ffff82d0803848aa 00000002c9f5819b 0000000000000008 (XEN) ffff83086c6738d8 ffff83086c673820 ffff83086c687ec0 00000002c9f631f5 (XEN) ffff83086c6708f8 ffff83086c6704e0 ffff83086c670918 0000000000000180 (XEN) ffff83086c67002c 0000000000000000 ffff83086c687fff 0000000000000ffb (XEN) ffff83086c673850 0000002100000000 ffff82d0802e8ba9 000000000000e008 (XEN) 0000000000000202 ffff83086c687e50 0000000000000000 ffff83086c68f000 (XEN) 00000020ffffffff 0000000000000000 ffff83086c687ee8 ffff82d0805a3900 (XEN) 0000000000000000 0000000000000000 000003530000012a ffff82d0805ab880 (XEN) 0000000000000001 ffff82d0805a3900 0000000000000001 0000000000000001 (XEN) ffff83085607d000 ffff83086c687ef0 ffff82d080278a68 ffff83086c6a5000 (XEN) ffff83086c68f000 ffff830851580000 ffff83086c6a5000 ffff83086c687da8 (XEN) 0000000000000000 0000000000000000 ffff880269a39e80 ffff880269a39e80 (XEN) 0000000000000004 0000000000000004 0000000000000001 00000000000000f3 (XEN) 0000000000000000 000000000b2777bc ffffffff816fe980 ffff88027331a7c0 (XEN) ffffffff82049af8 ffff88027331a7c0 00000000cb5efd00 0000beef0000beef (XEN) ffffffff816fec52 000000bf0000beef 0000000000000246 ffffc90000d0be98 (XEN) 000000000000beef 000000000000beef 000000000000beef 000000000000beef (XEN) Xen call trace: (XEN) [<ffff82d080288e1d>] do_IRQ+0x91c/0xb08 (XEN) [<ffff82d0803848aa>] common_interrupt+0x10a/0x120 (XEN) [<ffff82d0802e8ba9>] mwait-idle.c#mwait_idle+0x2a5/0x381 (XEN) [<ffff82d080278a68>] domain.c#idle_loop+0xb3/0xb5 (XEN) (XEN) (XEN) **************************************** (XEN) Panic on CPU 1: (XEN) Assertion '(sp == 0) || (peoi[sp-1].vector < vector)' failed at irq.c:1340 (XEN) **************************************** (XEN) (XEN) Manual reset required ('noreboot' specified) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel

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