> -Original Message-
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Friday, October 8, 2021 10:44 AM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; dw...@infradead.org; w...@kernel.org;
> j...@8bytes.org
> Cc: baolu...@linux.intel.c
0x1c, end_pfn: 0x1f
iov_pfn: 0x20, end_pfn: 0x23
...
it only need 9ms now.
Signed-off-by: Longpeng(Mike)
---
drivers/iommu/intel/iommu.c | 11 ++-
include/linux/intel-iommu.h | 6 ++
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/i
first_pte_in_page() returns boolean value, so let's convert its
return type to bool. In addition, use 'IS_ALIGNED' to make the
code more readable and neater.
Signed-off-by: Longpeng(Mike)
---
include/linux/intel-iommu.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-
olu]
- remove meaningless BUG_ON() in __domain_mapping() [Baolu]
Changes v1 -> v2:
- Fix compile warning on i386 [Baolu]
Longpeng(Mike) (2):
iommu/vt-d: convert the return type of first_pte_in_page to bool
iommu/vt-d: avoid duplicated removing in __domain_mapping
drivers/iommu/intel/iommu.
> -Original Message-
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, October 7, 2021 2:18 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; dw...@infradead.org; w...@kernel.org;
> j...@8bytes.org
> Cc: baolu...@l
0x1c, end_pfn: 0x1f
iov_pfn: 0x20, end_pfn: 0x23
...
it only need 9ms now.
Signed-off-by: Longpeng(Mike)
---
drivers/iommu/intel/iommu.c | 12 +++-
include/linux/intel-iommu.h | 6 ++
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/i
first_pte_in_page() returns boolean value, so let's convert its
return type to bool.
Signed-off-by: Longpeng(Mike)
---
include/linux/intel-iommu.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 05a65eb..a5
olu]
Longpeng(Mike) (2):
iommu/vt-d: convert the return type of first_pte_in_page to bool
iommu/vt-d: avoid duplicated removing in __domain_mapping
drivers/iommu/intel/iommu.c | 12 +++-
include/linux/intel-iommu.h | 8 +++-
2 files changed, 14 insertions(+), 6 deletions(-)
--
1.8.
0x1c, end_pfn: 0x1f
iov_pfn: 0x20, end_pfn: 0x23
...
it only need 9ms now.
Signed-off-by: Longpeng(Mike)
---
drivers/iommu/intel/iommu.c | 12 +++-
include/linux/intel-iommu.h | 6 ++
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/i
first_pte_in_page() returns boolean value, so let's convert its
return type to bool.
Signed-off-by: Longpeng(Mike)
---
include/linux/intel-iommu.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 05a65eb..a5
Hi guys,
We found that the __domain_mapping() would take too long when
the memory region is too large, we try to make it faster in this
patchset. The performance number can be found in PATCH 2, please
review when you free, thanks.
Longpeng(Mike) (2):
iommu/vt-d: convert the return type of
Fixes: 6491d4d02893 ("intel-iommu: Free old page tables before creating
superpage")
Cc: # v3.0+
Link:
https://lore.kernel.org/linux-iommu/670baaf8-4ff8-4e84-4be3-030b95ab5...@huawei.com/
Suggested-by: Lu Baolu
Signed-off-by: Longpeng(Mike)
---
v1 -> v2:
- add Joerg
- reconstruct the so
Hi Baolu,
> -Original Message-
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, April 8, 2021 12:32 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; iommu@lists.linux-foundation.org;
> linux-ker...@vger.kernel.org
> Cc: bao
Hi Baolu,
> -Original Message-
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Friday, April 2, 2021 12:44 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; iommu@lists.linux-foundation.org;
> linux-ker...@vger.kernel.org
> Cc: bao
Hi Baolu,
在 2021/4/2 11:06, Lu Baolu 写道:
> Hi Longpeng,
>
> On 4/1/21 3:18 PM, Longpeng(Mike) wrote:
>> The translation caches may preserve obsolete data when the
>> mapping size is changed, suppose the following sequence which
>> can reveal the problem with high pr
ntel-iommu: Free old page tables before creating
superpage")
Cc: # v3.0+
Link:
https://lore.kernel.org/linux-iommu/670baaf8-4ff8-4e84-4be3-030b95ab5...@huawei.com/
Suggested-by: Lu Baolu
Signed-off-by: Longpeng(Mike)
---
drivers/iommu/intel/iommu.c | 15 +--
1 file changed, 13 i
> -Original Message-
> From: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> Sent: Monday, March 22, 2021 7:51 AM
> To: 'Nadav Amit'
> Cc: Tian, Kevin ; chenjiashang
> ; David Woodhouse ;
> iommu@lists.linux-foundation.org; LKML ;
> a
Hi Nadav,
> -Original Message-
> From: Nadav Amit [mailto:nadav.a...@gmail.com]
> Sent: Friday, March 19, 2021 12:46 AM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
>
> Cc: Tian, Kevin ; chenjiashang
> ; David Woodhouse ;
> iommu@lists.li
> -Original Message-
> From: Tian, Kevin [mailto:kevin.t...@intel.com]
> Sent: Thursday, March 18, 2021 4:56 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; Nadav Amit
> Cc: chenjiashang ; David Woodhouse
> ; iommu@lists.linux
> -Original Message-
> From: Tian, Kevin [mailto:kevin.t...@intel.com]
> Sent: Thursday, March 18, 2021 4:43 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; Nadav Amit
> Cc: chenjiashang ; David Woodhouse
> ; iommu@lists.linux
> -Original Message-
> From: Tian, Kevin [mailto:kevin.t...@intel.com]
> Sent: Thursday, March 18, 2021 4:27 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; Nadav Amit
> Cc: chenjiashang ; David Woodhouse
> ; iommu@lists.linux
Hi Nadav,
> -Original Message-
> From: Nadav Amit [mailto:nadav.a...@gmail.com]
> Sent: Thursday, March 18, 2021 2:13 AM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
>
> Cc: David Woodhouse ; Lu Baolu
> ; Joerg Roedel ; w...@kernel.org;
> al
Hi guys,
I provide more information, please see below
> -Original Message-
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Thursday, March 18, 2021 10:59 AM
> To: Alex Williamson
> Cc: baolu...@linux.intel.com; Longpeng (Mike, Cloud Infrastructure Service
&
Hi Baolu,
> -Original Message-
> From: Lu Baolu [mailto:baolu...@linux.intel.com]
> Sent: Wednesday, March 17, 2021 1:17 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
> ; dw...@infradead.org; j...@8bytes.org;
> w...@kernel.org; alex.william...@redh
Hi Nadav,
> -Original Message-
> From: Nadav Amit [mailto:nadav.a...@gmail.com]
> Sent: Wednesday, March 17, 2021 1:46 PM
> To: Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
>
> Cc: David Woodhouse ; Lu Baolu
> ; Joerg Roedel ; w...@kernel.org;
> al
Hi guys,
We find the Intel iommu cache (i.e. iotlb) maybe works wrong in a special
situation, it would cause DMA fails or get wrong data.
The reproducer (based on Alex's vfio testsuite[1]) is in attachment, it can
reproduce the problem with high probability (~50%).
The machine we used is:
proces
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