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From: Eduardo Habkost <ehabkost@redhat.com>
To: Babu Moger <babu.moger@amd.com>
Cc: geoff@hostfission.com, kvm@vger.kernel.org, mst@redhat.com,
	kash@tripleback.net, mtosatti@redhat.com, qemu-devel@nongnu.org,
	marcel@redhat.com, pbonzini@redhat.com, rth@twiddle.net
Subject: Re: [PATCH v7 4/9] i386: Add new property to control cache info
Date: Mon, 7 May 2018 16:14:13 -0300	[thread overview]
Message-ID: <20180507191413.GC13350@localhost.localdomain> (raw)
In-Reply-To: <1524760009-24710-5-git-send-email-babu.moger@amd.com>

On Thu, Apr 26, 2018 at 11:26:44AM -0500, Babu Moger wrote:
> This will be used to control the cache information.
> By default new information will be displayed. If user
> passes "-cpu legacy-cache" then older information will
> be displayed even if the hardware supports new information.
> It will be "on" for machine type "pc-q35-2.10" for compatibility.
> 
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> Tested-by: Geoffrey McRae <geoff@hostfission.com>
> ---
>  include/hw/i386/pc.h | 4 ++++
>  target/i386/cpu.c    | 1 +
>  target/i386/cpu.h    | 5 +++++
>  3 files changed, 10 insertions(+)
> 
> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> index ffee841..d904a3c 100644
> --- a/include/hw/i386/pc.h
> +++ b/include/hw/i386/pc.h
> @@ -327,6 +327,10 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
>          .driver   = "q35-pcihost",\
>          .property = "x-pci-hole64-fix",\
>          .value    = "off",\
> +    },{\
> +        .driver   = TYPE_X86_CPU,\
> +        .property = "legacy-cache",\
> +        .value    = "on",\
>      },
>  

Looks good, except that we now need pc-*-2.13 machines, and this
should be moved to PC_COMPAT_2_12.

Also, I suggest squashing this with patch 5/9, and applying it
before patch 3/9.

-- 
Eduardo

WARNING: multiple messages have this Message-ID (diff)
From: Eduardo Habkost <ehabkost@redhat.com>
To: Babu Moger <babu.moger@amd.com>
Cc: mst@redhat.com, marcel@redhat.com, pbonzini@redhat.com,
	rth@twiddle.net, mtosatti@redhat.com, geoff@hostfission.com,
	kash@tripleback.net, qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [PATCH v7 4/9] i386: Add new property to control cache info
Date: Mon, 7 May 2018 16:14:13 -0300	[thread overview]
Message-ID: <20180507191413.GC13350@localhost.localdomain> (raw)
In-Reply-To: <1524760009-24710-5-git-send-email-babu.moger@amd.com>

On Thu, Apr 26, 2018 at 11:26:44AM -0500, Babu Moger wrote:
> This will be used to control the cache information.
> By default new information will be displayed. If user
> passes "-cpu legacy-cache" then older information will
> be displayed even if the hardware supports new information.
> It will be "on" for machine type "pc-q35-2.10" for compatibility.
> 
> Signed-off-by: Babu Moger <babu.moger@amd.com>
> Tested-by: Geoffrey McRae <geoff@hostfission.com>
> ---
>  include/hw/i386/pc.h | 4 ++++
>  target/i386/cpu.c    | 1 +
>  target/i386/cpu.h    | 5 +++++
>  3 files changed, 10 insertions(+)
> 
> diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
> index ffee841..d904a3c 100644
> --- a/include/hw/i386/pc.h
> +++ b/include/hw/i386/pc.h
> @@ -327,6 +327,10 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
>          .driver   = "q35-pcihost",\
>          .property = "x-pci-hole64-fix",\
>          .value    = "off",\
> +    },{\
> +        .driver   = TYPE_X86_CPU,\
> +        .property = "legacy-cache",\
> +        .value    = "on",\
>      },
>  

Looks good, except that we now need pc-*-2.13 machines, and this
should be moved to PC_COMPAT_2_12.

Also, I suggest squashing this with patch 5/9, and applying it
before patch 3/9.

-- 
Eduardo

  reply	other threads:[~2018-05-07 19:14 UTC|newest]

Thread overview: 88+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-26 16:26 [PATCH v7 0/9] i386: Enable TOPOEXT to support hyperthreading on AMD CPU Babu Moger
2018-04-26 16:26 ` [Qemu-devel] " Babu Moger
2018-04-26 16:26 ` [PATCH v7 1/9] i386: Helpers to encode cache information consistently Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 19:05   ` Eduardo Habkost
2018-05-07 19:05     ` [Qemu-devel] " Eduardo Habkost
2018-05-07 21:14     ` Moger, Babu
2018-05-07 21:14       ` [Qemu-devel] " Moger, Babu
2018-05-07 21:27       ` Eduardo Habkost
2018-05-07 21:27         ` [Qemu-devel] " Eduardo Habkost
2018-05-07 22:47         ` Moger, Babu
2018-05-07 22:47           ` [Qemu-devel] " Moger, Babu
2018-05-08 18:40           ` Moger, Babu
2018-05-08 18:40             ` [Qemu-devel] " Moger, Babu
2018-05-08 19:07             ` Eduardo Habkost
2018-05-08 19:07               ` [Qemu-devel] " Eduardo Habkost
2018-05-08 19:34               ` Moger, Babu
2018-05-08 19:34                 ` [Qemu-devel] " Moger, Babu
2018-04-26 16:26 ` [PATCH v7 2/9] i386: Add cache information in X86CPUDefinition Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 19:09   ` Eduardo Habkost
2018-05-07 19:09     ` [Qemu-devel] " Eduardo Habkost
2018-05-07 22:56     ` Moger, Babu
2018-05-07 22:56       ` [Qemu-devel] " Moger, Babu
2018-04-26 16:26 ` [PATCH v7 3/9] i386: Initialize cache information for EPYC family processors Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 20:22   ` Eduardo Habkost
2018-05-07 20:22     ` [Qemu-devel] " Eduardo Habkost
2018-04-26 16:26 ` [PATCH v7 4/9] i386: Add new property to control cache info Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 19:14   ` Eduardo Habkost [this message]
2018-05-07 19:14     ` Eduardo Habkost
2018-05-07 23:29     ` Moger, Babu
2018-05-07 23:29       ` [Qemu-devel] " Moger, Babu
2018-05-08 14:25   ` Eduardo Habkost
2018-05-08 14:25     ` [Qemu-devel] " Eduardo Habkost
2018-05-08 17:26     ` Moger, Babu
2018-05-08 17:26       ` [Qemu-devel] " Moger, Babu
2018-05-08 18:33       ` Eduardo Habkost
2018-05-08 18:33         ` [Qemu-devel] " Eduardo Habkost
2018-05-08 18:44         ` Moger, Babu
2018-05-08 18:44           ` [Qemu-devel] " Moger, Babu
2018-04-26 16:26 ` [PATCH v7 5/9] i386: Use the statically loaded cache definitions Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 19:15   ` Eduardo Habkost
2018-05-07 19:15     ` [Qemu-devel] " Eduardo Habkost
2018-05-07 23:32     ` Moger, Babu
2018-05-07 23:32       ` [Qemu-devel] " Moger, Babu
2018-05-07 19:37   ` Eduardo Habkost
2018-05-07 19:37     ` [Qemu-devel] " Eduardo Habkost
2018-05-07 23:39     ` Moger, Babu
2018-05-07 23:39       ` [Qemu-devel] " Moger, Babu
2018-05-08 14:12       ` Eduardo Habkost
2018-05-08 14:12         ` [Qemu-devel] " Eduardo Habkost
2018-05-08 17:08         ` Moger, Babu
2018-05-08 17:08           ` [Qemu-devel] " Moger, Babu
2018-04-26 16:26 ` [PATCH v7 6/9] i386: Populate AMD Processor Cache Information for cpuid 0x8000001D Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 21:06   ` Eduardo Habkost
2018-05-07 21:06     ` [Qemu-devel] " Eduardo Habkost
2018-05-08 16:41     ` Moger, Babu
2018-05-08 16:41       ` [Qemu-devel] " Moger, Babu
2018-04-26 16:26 ` [PATCH v7 7/9] i386: Add support for CPUID_8000_001E for AMD Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 19:39   ` Eduardo Habkost
2018-05-07 19:39     ` [Qemu-devel] " Eduardo Habkost
2018-05-07 23:44     ` Moger, Babu
2018-05-07 23:44       ` [Qemu-devel] " Moger, Babu
2018-05-08 14:16       ` Eduardo Habkost
2018-05-08 14:16         ` [Qemu-devel] " Eduardo Habkost
2018-05-08 15:02         ` Moger, Babu
2018-05-08 15:02           ` [Qemu-devel] " Moger, Babu
2018-05-11 14:12           ` Eduardo Habkost
2018-05-11 14:12             ` [Qemu-devel] " Eduardo Habkost
2018-05-11 14:44             ` Moger, Babu
2018-05-11 14:44               ` [Qemu-devel] " Moger, Babu
2018-05-11 14:59               ` Eduardo Habkost
2018-05-11 14:59                 ` [Qemu-devel] " Eduardo Habkost
2018-04-26 16:26 ` [PATCH v7 8/9] i386: Enable TOPOEXT feature on AMD EPYC CPU Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 21:07   ` Eduardo Habkost
2018-05-07 21:07     ` [Qemu-devel] " Eduardo Habkost
2018-04-26 16:26 ` [PATCH v7 9/9] i386: Remove generic SMT thread check Babu Moger
2018-04-26 16:26   ` [Qemu-devel] " Babu Moger
2018-05-07 21:14   ` Eduardo Habkost
2018-05-07 21:14     ` [Qemu-devel] " Eduardo Habkost
2018-04-26 20:49 ` [PATCH v7 0/9] i386: Enable TOPOEXT to support hyperthreading on AMD CPU geoff--- via Qemu-devel
2018-04-26 20:49   ` [Qemu-devel] " geoff

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