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From: Joerg Roedel <joerg.roedel@amd.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/6] kvm/x86/mmu: don't unnecessarily recalculate table_gfn in *fetch
Date: Thu, 5 Mar 2009 15:36:08 +0100	[thread overview]
Message-ID: <20090305143608.GF8751@amd.com> (raw)
In-Reply-To: <1236255153-4432-4-git-send-email-joerg.roedel@amd.com>

On Thu, Mar 05, 2009 at 01:12:30PM +0100, Joerg Roedel wrote:
> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
> ---
>  arch/x86/kvm/paging_tmpl.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
> index a0c11ea..79668ba 100644
> --- a/arch/x86/kvm/paging_tmpl.h
> +++ b/arch/x86/kvm/paging_tmpl.h
> @@ -315,7 +315,7 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
>  			direct = 1;
>  			if (!is_dirty_pte(gw->ptes[level - 1]))
>  				access &= ~ACC_WRITE_MASK;
> -			table_gfn = gpte_to_gfn(gw->ptes[level - 1]);
> +			table_gfn = gw->table_gfn[level - delta];
>  		} else {
>  			direct = 0;
>  			table_gfn = gw->table_gfn[level - 2];

Made a mistake here when rebasing these patches. Updated patch is below:

>From de38a141a0ba44b3d46e333620d518cd831326c0 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Wed, 4 Mar 2009 20:49:15 +0100
Subject: [PATCH 3/6] kvm/x86/mmu: don't unnecessarily recalculate table_gfn in *fetch

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
 arch/x86/kvm/paging_tmpl.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index a0c11ea..79668ba 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -315,7 +315,7 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
 			direct = 1;
 			if (!is_dirty_pte(gw->ptes[level - 1]))
 				access &= ~ACC_WRITE_MASK;
-			table_gfn = gpte_to_gfn(gw->ptes[level - 1]);
+			table_gfn = gw->table_gfn[level - 1];
 		} else {
 			direct = 0;
 			table_gfn = gw->table_gfn[level - 2];
-- 
1.5.6.4


-- 
           | Advanced Micro Devices GmbH
 Operating | Karl-Hammerschmidt-Str. 34, 85609 Dornach bei München
 System    | 
 Research  | Geschäftsführer: Jochen Polster, Thomas M. McCoy, Giuliano Meroni
 Center    | Sitz: Dornach, Gemeinde Aschheim, Landkreis München
           | Registergericht München, HRB Nr. 43632


WARNING: multiple messages have this Message-ID (diff)
From: Joerg Roedel <joerg.roedel@amd.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/6] kvm/x86/mmu: don't unnecessarily recalculate table_gfn in *fetch
Date: Thu, 5 Mar 2009 15:36:08 +0100	[thread overview]
Message-ID: <20090305143608.GF8751@amd.com> (raw)
In-Reply-To: <1236255153-4432-4-git-send-email-joerg.roedel@amd.com>

On Thu, Mar 05, 2009 at 01:12:30PM +0100, Joerg Roedel wrote:
> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
> ---
>  arch/x86/kvm/paging_tmpl.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
> index a0c11ea..79668ba 100644
> --- a/arch/x86/kvm/paging_tmpl.h
> +++ b/arch/x86/kvm/paging_tmpl.h
> @@ -315,7 +315,7 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
>  			direct = 1;
>  			if (!is_dirty_pte(gw->ptes[level - 1]))
>  				access &= ~ACC_WRITE_MASK;
> -			table_gfn = gpte_to_gfn(gw->ptes[level - 1]);
> +			table_gfn = gw->table_gfn[level - delta];
>  		} else {
>  			direct = 0;
>  			table_gfn = gw->table_gfn[level - 2];

Made a mistake here when rebasing these patches. Updated patch is below:

From de38a141a0ba44b3d46e333620d518cd831326c0 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Wed, 4 Mar 2009 20:49:15 +0100
Subject: [PATCH 3/6] kvm/x86/mmu: don't unnecessarily recalculate table_gfn in *fetch

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
 arch/x86/kvm/paging_tmpl.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index a0c11ea..79668ba 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -315,7 +315,7 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
 			direct = 1;
 			if (!is_dirty_pte(gw->ptes[level - 1]))
 				access &= ~ACC_WRITE_MASK;
-			table_gfn = gpte_to_gfn(gw->ptes[level - 1]);
+			table_gfn = gw->table_gfn[level - 1];
 		} else {
 			direct = 0;
 			table_gfn = gw->table_gfn[level - 2];
-- 
1.5.6.4


-- 
           | Advanced Micro Devices GmbH
 Operating | Karl-Hammerschmidt-Str. 34, 85609 Dornach bei München
 System    | 
 Research  | Geschäftsführer: Jochen Polster, Thomas M. McCoy, Giuliano Meroni
 Center    | Sitz: Dornach, Gemeinde Aschheim, Landkreis München
           | Registergericht München, HRB Nr. 43632


  reply	other threads:[~2009-03-05 14:36 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-05 12:12 [PATCH 0/6] various x86 kvm fixes Joerg Roedel
2009-03-05 12:12 ` [PATCH 1/6] kvm/x86/svm: force new asid on vcpu migration Joerg Roedel
2009-03-05 17:53   ` Marcelo Tosatti
2009-07-26 15:23   ` Avi Kivity
2009-03-05 12:12 ` [PATCH 2/6] kvm/x86/mmu: remove call to kvm_mmu_pte_write from walk_addr Joerg Roedel
2009-03-05 12:12 ` [PATCH 3/6] kvm/x86/mmu: don't unnecessarily recalculate table_gfn in *fetch Joerg Roedel
2009-03-05 14:36   ` Joerg Roedel [this message]
2009-03-05 14:36     ` Joerg Roedel
2009-03-05 12:12 ` [PATCH 4/6] kvm/x86/mmu: handle invlpg on large pages Joerg Roedel
2009-03-05 21:11   ` Marcelo Tosatti
2009-03-06 13:06     ` Joerg Roedel
2009-03-05 12:12 ` [PATCH 5/6] kvm/x86: call kvm_lapic_sync_from_vapic with preemption disabled Joerg Roedel
2009-03-05 21:39   ` Marcelo Tosatti
2009-03-05 12:12 ` [PATCH 6/6] kvm/x86/mmu: include PT_PAGE_SIZE_MASK in PT64_PERM_MASK Joerg Roedel
2009-03-08 12:32   ` Avi Kivity
2009-03-05 21:50 ` [PATCH 0/6] various x86 kvm fixes Marcelo Tosatti
2009-03-06 13:04   ` Joerg Roedel

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