Re: [Xen-devel] [PATCH for-4.12] x86/hvm: Increate the triple fault log message to XENLOG_ERR

[Wei Liu <wei.liu2@xxxxxxxxxx>]

I think you mean "Increase" in the subject line.

On Thu, Feb 28, 2019 at 10:48:53AM +0000, Andrew Cooper wrote:
> At INFO level, it doesn't get printed out by default in release builds,
> leading to unqualified logging such as this:
> 
>   (XEN) [   66.995993] Freed 524kB init memory
>   (XEN) [ 1993.144997] *** Dumping Dom9 vcpu#2 state: ***
>   (XEN) [ 1993.145008] ----[ Xen-4.11.1  x86_64  debug=n   Not tainted ]----
>   (XEN) [ 1993.145011] CPU:    21
>   (XEN) [ 1993.145015] RIP:    0010:[<ffffe0002ba950ef>]
>   (XEN) [ 1993.145018] RFLAGS: 0000000000010246   CONTEXT: hvm guest (d9v2)
>   (XEN) [ 1993.145026] rax: 00000000ffffe000   rbx: ffffe0002d8e1440   rcx: 
> 0000ffffe0002ba9
>   (XEN) [ 1993.145031] rdx: 0000000000000000   rsi: ffffe0002ba93575   rdi: 
> fffff803dfb9f340
>   (XEN) [ 1993.145035] rbp: ffffd001cd791200   rsp: ffffd001cd791140   r8:  
> 0000000000000130
>   (XEN) [ 1993.145039] r9:  0000000080000000   r10: 0000000000000000   r11: 
> 0000000000000020
>   (XEN) [ 1993.145043] r12: ffffe0002ba9306d   r13: 0000000000000000   r14: 
> 0000000000000001
>   (XEN) [ 1993.145047] r15: fffff803dfb9f200   cr0: 0000000080050031   cr4: 
> 0000000000170678
>   (XEN) [ 1993.145051] cr3: 00000000001aa002   cr2: 0000020488403f70
>   (XEN) [ 1993.145056] fsb: 0000000060f71000   gsb: ffffd001cc1af000   gss: 
> 0000009d60f6f000
>   (XEN) [ 1993.145060] ds: 002b   es: 002b   fs: 0053   gs: 002b   ss: 0018   
> cs: 0010
> 
> A triple fault is fatal to the domain under all circumstances (so will print
> at most once), and in practice is always an error condition rather than a
> reboot fallback.
> 
> Reported-by: Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Wei Liu <wei.liu2@xxxxxxxxxx>

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