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* [PATCH] x86emul: add support for missing {, V}PMADDWD insns
@ 2019-05-15  8:23 Jan Beulich
  2019-05-15  8:23 ` [Xen-devel] " Jan Beulich
                   ` (2 more replies)
  0 siblings, 3 replies; 10+ messages in thread
From: Jan Beulich @ 2019-05-15  8:23 UTC (permalink / raw)
  To: xen-devel; +Cc: Andrew Cooper, Wei Liu, Razvan Cojocaru, Roger Pau Monne

Their pre-AVX512 incarnations have clearly been overlooked during much
earlier work. Their memory access pattern is entirely standard, so no
specific tests get added to the harness.

Reported-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -6624,6 +6624,8 @@ x86_emulate(
     case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
     case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
     case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
+    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
+    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
     case X86EMUL_OPC_66(0x0f, 0xf6):     /* psadbw xmm/m128,xmm */
     case X86EMUL_OPC_VEX_66(0x0f, 0xf6): /* vpsadbw {x,y}mm/mem,{x,y}mm,{x,y}mm */
     CASE_SIMD_PACKED_INT(0x0f, 0xf8):    /* psubb {,x}mm/mem,{,x}mm */



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^ permalink raw reply	[flat|nested] 10+ messages in thread

* [Xen-devel] [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15  8:23 [PATCH] x86emul: add support for missing {, V}PMADDWD insns Jan Beulich
@ 2019-05-15  8:23 ` Jan Beulich
  2019-05-15  9:43 ` Alexandru Stefan ISAILA
  2019-05-15 10:17 ` Andrew Cooper
  2 siblings, 0 replies; 10+ messages in thread
From: Jan Beulich @ 2019-05-15  8:23 UTC (permalink / raw)
  To: xen-devel; +Cc: Andrew Cooper, Wei Liu, Razvan Cojocaru, Roger Pau Monne

Their pre-AVX512 incarnations have clearly been overlooked during much
earlier work. Their memory access pattern is entirely standard, so no
specific tests get added to the harness.

Reported-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -6624,6 +6624,8 @@ x86_emulate(
     case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
     case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
     case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
+    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
+    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
     case X86EMUL_OPC_66(0x0f, 0xf6):     /* psadbw xmm/m128,xmm */
     case X86EMUL_OPC_VEX_66(0x0f, 0xf6): /* vpsadbw {x,y}mm/mem,{x,y}mm,{x,y}mm */
     CASE_SIMD_PACKED_INT(0x0f, 0xf8):    /* psubb {,x}mm/mem,{,x}mm */



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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15  8:23 [PATCH] x86emul: add support for missing {, V}PMADDWD insns Jan Beulich
  2019-05-15  8:23 ` [Xen-devel] " Jan Beulich
@ 2019-05-15  9:43 ` Alexandru Stefan ISAILA
  2019-05-15  9:43   ` [Xen-devel] " Alexandru Stefan ISAILA
  2019-05-15 10:17 ` Andrew Cooper
  2 siblings, 1 reply; 10+ messages in thread
From: Alexandru Stefan ISAILA @ 2019-05-15  9:43 UTC (permalink / raw)
  To: Jan Beulich, xen-devel
  Cc: Andrew Cooper, Wei Liu, Razvan Cojocaru, Roger Pau Monne



On 15.05.2019 11:23, Jan Beulich wrote:
> Their pre-AVX512 incarnations have clearly been overlooked during much
> earlier work. Their memory access pattern is entirely standard, so no
> specific tests get added to the harness.
> 
> Reported-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>

Tested-by: Alexandru Isaila <aisaila@bitdefender.com>

> 
> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
> @@ -6624,6 +6624,8 @@ x86_emulate(
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>       case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
>       case X86EMUL_OPC_66(0x0f, 0xf6):     /* psadbw xmm/m128,xmm */
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf6): /* vpsadbw {x,y}mm/mem,{x,y}mm,{x,y}mm */
>       CASE_SIMD_PACKED_INT(0x0f, 0xf8):    /* psubb {,x}mm/mem,{,x}mm */
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xenproject.org
> https://lists.xenproject.org/mailman/listinfo/xen-devel
> 
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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xen-devel] [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15  9:43 ` Alexandru Stefan ISAILA
@ 2019-05-15  9:43   ` Alexandru Stefan ISAILA
  0 siblings, 0 replies; 10+ messages in thread
From: Alexandru Stefan ISAILA @ 2019-05-15  9:43 UTC (permalink / raw)
  To: Jan Beulich, xen-devel
  Cc: Andrew Cooper, Wei Liu, Razvan Cojocaru, Roger Pau Monne



On 15.05.2019 11:23, Jan Beulich wrote:
> Their pre-AVX512 incarnations have clearly been overlooked during much
> earlier work. Their memory access pattern is entirely standard, so no
> specific tests get added to the harness.
> 
> Reported-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>

Tested-by: Alexandru Isaila <aisaila@bitdefender.com>

> 
> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
> @@ -6624,6 +6624,8 @@ x86_emulate(
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>       case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
>       case X86EMUL_OPC_66(0x0f, 0xf6):     /* psadbw xmm/m128,xmm */
>       case X86EMUL_OPC_VEX_66(0x0f, 0xf6): /* vpsadbw {x,y}mm/mem,{x,y}mm,{x,y}mm */
>       CASE_SIMD_PACKED_INT(0x0f, 0xf8):    /* psubb {,x}mm/mem,{,x}mm */
> 
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xenproject.org
> https://lists.xenproject.org/mailman/listinfo/xen-devel
> 
_______________________________________________
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https://lists.xenproject.org/mailman/listinfo/xen-devel

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15  8:23 [PATCH] x86emul: add support for missing {, V}PMADDWD insns Jan Beulich
  2019-05-15  8:23 ` [Xen-devel] " Jan Beulich
  2019-05-15  9:43 ` Alexandru Stefan ISAILA
@ 2019-05-15 10:17 ` Andrew Cooper
  2019-05-15 10:17   ` [Xen-devel] " Andrew Cooper
  2019-05-15 11:50   ` Jan Beulich
  2 siblings, 2 replies; 10+ messages in thread
From: Andrew Cooper @ 2019-05-15 10:17 UTC (permalink / raw)
  To: Jan Beulich, xen-devel; +Cc: Wei Liu, Razvan Cojocaru, Roger Pau Monne

On 15/05/2019 09:23, Jan Beulich wrote:
> Their pre-AVX512 incarnations have clearly been overlooked during much
> earlier work. Their memory access pattern is entirely standard, so no
> specific tests get added to the harness.
>
> Reported-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
>
> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
> @@ -6624,6 +6624,8 @@ x86_emulate(
>      case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>      case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>      case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */

Nothing on this path checks for SSSE3, AFAICT.

~Andrew

>      case X86EMUL_OPC_66(0x0f, 0xf6):     /* psadbw xmm/m128,xmm */
>      case X86EMUL_OPC_VEX_66(0x0f, 0xf6): /* vpsadbw {x,y}mm/mem,{x,y}mm,{x,y}mm */
>      CASE_SIMD_PACKED_INT(0x0f, 0xf8):    /* psubb {,x}mm/mem,{,x}mm */
>
>


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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xen-devel] [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15 10:17 ` Andrew Cooper
@ 2019-05-15 10:17   ` Andrew Cooper
  2019-05-15 11:50   ` Jan Beulich
  1 sibling, 0 replies; 10+ messages in thread
From: Andrew Cooper @ 2019-05-15 10:17 UTC (permalink / raw)
  To: Jan Beulich, xen-devel; +Cc: Wei Liu, Razvan Cojocaru, Roger Pau Monne

On 15/05/2019 09:23, Jan Beulich wrote:
> Their pre-AVX512 incarnations have clearly been overlooked during much
> earlier work. Their memory access pattern is entirely standard, so no
> specific tests get added to the harness.
>
> Reported-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
>
> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
> @@ -6624,6 +6624,8 @@ x86_emulate(
>      case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>      case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>      case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */

Nothing on this path checks for SSSE3, AFAICT.

~Andrew

>      case X86EMUL_OPC_66(0x0f, 0xf6):     /* psadbw xmm/m128,xmm */
>      case X86EMUL_OPC_VEX_66(0x0f, 0xf6): /* vpsadbw {x,y}mm/mem,{x,y}mm,{x,y}mm */
>      CASE_SIMD_PACKED_INT(0x0f, 0xf8):    /* psubb {,x}mm/mem,{,x}mm */
>
>


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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15 10:17 ` Andrew Cooper
  2019-05-15 10:17   ` [Xen-devel] " Andrew Cooper
@ 2019-05-15 11:50   ` Jan Beulich
  2019-05-15 11:50     ` [Xen-devel] " Jan Beulich
  2019-05-15 11:59     ` Andrew Cooper
  1 sibling, 2 replies; 10+ messages in thread
From: Jan Beulich @ 2019-05-15 11:50 UTC (permalink / raw)
  To: Andrew Cooper, xen-devel; +Cc: Wei Liu, Razvan Cojocaru, Roger Pau Monne

>>> On 15.05.19 at 12:17, <andrew.cooper3@citrix.com> wrote:
> On 15/05/2019 09:23, Jan Beulich wrote:
>> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
>> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
>> @@ -6624,6 +6624,8 @@ x86_emulate(
>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>>      case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
>> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
>> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
> 
> Nothing on this path checks for SSSE3, AFAICT.

Of course not - the insn first got introduced with MMX, then
promoted with SSE2 and again with AVX and AVX2.

Jan



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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xen-devel] [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15 11:50   ` Jan Beulich
@ 2019-05-15 11:50     ` Jan Beulich
  2019-05-15 11:59     ` Andrew Cooper
  1 sibling, 0 replies; 10+ messages in thread
From: Jan Beulich @ 2019-05-15 11:50 UTC (permalink / raw)
  To: Andrew Cooper, xen-devel; +Cc: Wei Liu, Razvan Cojocaru, Roger Pau Monne

>>> On 15.05.19 at 12:17, <andrew.cooper3@citrix.com> wrote:
> On 15/05/2019 09:23, Jan Beulich wrote:
>> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
>> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
>> @@ -6624,6 +6624,8 @@ x86_emulate(
>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>>      case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
>> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
>> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
> 
> Nothing on this path checks for SSSE3, AFAICT.

Of course not - the insn first got introduced with MMX, then
promoted with SSE2 and again with AVX and AVX2.

Jan



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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15 11:50   ` Jan Beulich
  2019-05-15 11:50     ` [Xen-devel] " Jan Beulich
@ 2019-05-15 11:59     ` Andrew Cooper
  2019-05-15 11:59       ` [Xen-devel] " Andrew Cooper
  1 sibling, 1 reply; 10+ messages in thread
From: Andrew Cooper @ 2019-05-15 11:59 UTC (permalink / raw)
  To: Jan Beulich, xen-devel; +Cc: Wei Liu, Razvan Cojocaru, Roger Pau Monne

On 15/05/2019 12:50, Jan Beulich wrote:
>>>> On 15.05.19 at 12:17, <andrew.cooper3@citrix.com> wrote:
>> On 15/05/2019 09:23, Jan Beulich wrote:
>>> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
>>> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
>>> @@ -6624,6 +6624,8 @@ x86_emulate(
>>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>>>      case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
>>> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
>>> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
>> Nothing on this path checks for SSSE3, AFAICT.
> Of course not - the insn first got introduced with MMX, then
> promoted with SSE2 and again with AVX and AVX2.

Oh - terribly sorry - I was reading the adjacent instruction in the manual.

Sorry for the noise.

Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [Xen-devel] [PATCH] x86emul: add support for missing {, V}PMADDWD insns
  2019-05-15 11:59     ` Andrew Cooper
@ 2019-05-15 11:59       ` Andrew Cooper
  0 siblings, 0 replies; 10+ messages in thread
From: Andrew Cooper @ 2019-05-15 11:59 UTC (permalink / raw)
  To: Jan Beulich, xen-devel; +Cc: Wei Liu, Razvan Cojocaru, Roger Pau Monne

On 15/05/2019 12:50, Jan Beulich wrote:
>>>> On 15.05.19 at 12:17, <andrew.cooper3@citrix.com> wrote:
>> On 15/05/2019 09:23, Jan Beulich wrote:
>>> --- a/xen/arch/x86/x86_emulate/x86_emulate.c
>>> +++ b/xen/arch/x86/x86_emulate/x86_emulate.c
>>> @@ -6624,6 +6624,8 @@ x86_emulate(
>>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf3): /* vpsllq xmm/m128,{x,y}mm,{x,y}mm */
>>>      case X86EMUL_OPC_66(0x0f, 0xf4):     /* pmuludq xmm/m128,xmm */
>>>      case X86EMUL_OPC_VEX_66(0x0f, 0xf4): /* vpmuludq {x,y}mm/mem,{x,y}mm,{x,y}mm */
>>> +    CASE_SIMD_PACKED_INT(0x0f, 0xf5):    /* pmaddwd {,x}mm/mem,{,x}mm */
>>> +    case X86EMUL_OPC_VEX_66(0x0f, 0xf5): /* vpmaddwd {x,y}mm/mem,{x,y}mm,{x,y}mm */
>> Nothing on this path checks for SSSE3, AFAICT.
> Of course not - the insn first got introduced with MMX, then
> promoted with SSE2 and again with AVX and AVX2.

Oh - terribly sorry - I was reading the adjacent instruction in the manual.

Sorry for the noise.

Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

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^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2019-05-15 11:59 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-15  8:23 [PATCH] x86emul: add support for missing {, V}PMADDWD insns Jan Beulich
2019-05-15  8:23 ` [Xen-devel] " Jan Beulich
2019-05-15  9:43 ` Alexandru Stefan ISAILA
2019-05-15  9:43   ` [Xen-devel] " Alexandru Stefan ISAILA
2019-05-15 10:17 ` Andrew Cooper
2019-05-15 10:17   ` [Xen-devel] " Andrew Cooper
2019-05-15 11:50   ` Jan Beulich
2019-05-15 11:50     ` [Xen-devel] " Jan Beulich
2019-05-15 11:59     ` Andrew Cooper
2019-05-15 11:59       ` [Xen-devel] " Andrew Cooper

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