In Intel Vt-D specs, Chapter 9.3 Page-Table Entry,
The size of ADDR(address) field is 12:51, but the function dma_pte_addr
treats it as 12:63.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c |2 +-
include/linux/dma_remapping.h |2 ++
2 files changed, 3
There is a structure named context_entry used by intel iommu, and there
are some bit operations on it. Use bit structure may make these operations
easy.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 88 +++
1 file changed
In Intel Vt-D specs, Chapter 9.3 Page-Table Entry,
The size of ADDR(address) field is 12:51, but the function dma_pte_addr
treats it as 12:63.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c |4 ++--
include/linux/dma_remapping.h |2 ++
2 files changed, 4
According to Intel Vt-D specs, the offset of Invalidation complete
status register should be 0x9C, not 0x98.
See Intel's VT-d spec, Revision 1.3, Chapter 10.4, Page 98;
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
include/linux/intel-iommu.h | 2 +-
1 file changed, 1 insertion(+), 1
Joerg,
Thank you for reviewing this patch.
ZhenHua
On 09/24/2013 07:05 PM, Joerg Roedel wrote:
On Tue, Sep 17, 2013 at 04:38:29PM +0800, ZhenHua wrote:
Hi Guys,
Though DMAR_ICS_REG is not used yet, I think this patch is
necessary. So please take a look at it.
You are right, my Spec
it.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 37 +++--
1 file changed, 27 insertions(+), 10 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 43b9bfe..65cd480 100644
--- a/drivers/iommu/intel
it.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 37 +++--
1 file changed, 27 insertions(+), 10 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 43b9bfe..65cd480 100644
--- a/drivers/iommu/intel
data register
IEADDR_REG 0xa8Invalidation event address register
IEUADDR_REG 0xacInvalidation event upper address register
Through they are not used in kernel in the latest version, the defination
should be added to kernel as well as other registers.
Signed-off-by: Li, Zhen
.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/dmar.c | 31 +++
1 file changed, 31 insertions(+)
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 60ab474..7b4fa90 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -66,6 +66,8
There is a bug when Linux running on an HP large system:
when kdump kernel runs, the hardware is still using the old
root entry. This causes error message when iommu not finished initialization.
-Original Message-
From: Li, Zhen-Hua
Sent: Monday, August 18, 2014 4:59 PM
: [fault reason 01] Present bit in root entry is clear
It appears when iommu initializing in the kdump kernel.
-Original Message-
From: Joerg Roedel [mailto:j...@8bytes.org]
Sent: Tuesday, August 19, 2014 7:23 AM
To: Li, Zhen-Hua
Cc: David Woodhouse; iommu@lists.linux-foundation.org
-
From: Li, Zhen-Hua
Sent: Tuesday, August 19, 2014 7:27 AM
To: 'Joerg Roedel'
Cc: David Woodhouse; iommu@lists.linux-foundation.org;
linux-ker...@vger.kernel.org
Subject: RE: [PATCH 1/1] iommu/vt-d : clear old root entry for dump kernel
: [fault reason 01] Present bit in root entry is clear
.
-Original Message-
From: Li, Zhen-Hua
Sent: Tuesday, August 19, 2014 7:48 AM
To: Li, Zhen-Hua; Joerg Roedel
Cc: David Woodhouse; iommu@lists.linux-foundation.org;
linux-ker...@vger.kernel.org
Subject: RE: [PATCH 1/1] iommu/vt-d : clear old root entry for dump kernel
When the dump kernel boots
The following series implements a fix for:
A kdump problem about DMA that has been discussed for a long time.
That is, when a kernel panics and boots into the kdump kernel, DMA that was
started by the panicked kernel is not stopped before the kdump kernel is booted;
and the kdump kernel disables
* and context_put*,
use context_* and context_set_* for replacement.
Signed-off-by: Bill Sumner
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 562
1 file changed, 562 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c
Modify the operation of the following functions when called during crash dump:
device_to_domain_id
get_domain_for_dev
init_dmars
intel_iommu_init
Signed-off-by: Bill Sumner
---
drivers/iommu/intel-iommu.c | 134 +++-
1 file changed, 121 insertions(+),
, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 69 +
1 file changed, 69 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 1c7350d..99fe408 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu
-- just enables
a functional change to be made in a later patch.
Bill Sumner:
Original version.
Li, Zhenhua:
Minor change, add change to function __iommu_attach_domain.
Signed-off-by: Bill Sumner
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 32
Interfaces for when a new domain in the crashdump kernel needs some
values from the panicked kernel's context entries.
Signed-off-by: Bill Sumner
---
drivers/iommu/intel-iommu.c | 46 +
1 file changed, 46 insertions(+)
diff --git
context_set_address_root(context, value), expected result is
context-lo == 0x123456789abce111;
But the actual result is:
context-lo == 0x1237577f9bbde111;
So we need to clear bits 12:63 before setting the new value, this will fix
this problem.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 70 +
1 file changed, 70 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 2dc6250..5ce2850 100644
--- a/drivers/iommu
bit operations in setting values
Bill Sumner (5):
iommu/vt-d: Update iommu_attach_domain() and its callers
iommu/vt-d: Items required for kdump
iommu/vt-d: data types and functions used for kdump
iommu/vt-d: Add domain-id functions
iommu/vt-d: enable kdump support in iommu module
Li, Zhen
kernel, its phys address will not be save to RTA register,
but when its data is changed, we will save the new data to old root entry table.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 49 +
include/linux/intel-iommu.h | 5
Interfaces for when a new domain in the crashdump kernel needs some
values from the panicked kernel's context entries.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
---
drivers/iommu/intel-iommu.c | 62 +
1 file changed, 62 insertions(+)
diff
-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 97 +
include/linux/intel-iommu.h | 9 +
2 files changed, 106 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index c0bebd6..8a7ad72 100644
-- just enables
a functional change to be made in a later patch.
Bill Sumner:
Original version.
Li, Zhenhua:
Minor change, add change to function __iommu_attach_domain.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel
.
Use new function to copy old context entry tables and page tables.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 542
1 file changed, 542 insertions(+)
diff --git
When a device driver issues the first dma_map command for a
device, we assign a new and empty page-table, thus removing all
mappings from the old kernel for the device.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 27 ---
1 file changed
Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 142 ++--
1 file changed, 125 insertions(+), 17 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 9b2f725
Functions to copy the irte data from the old kernel into the kdump kernel.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 57 +
include/linux/intel-iommu.h | 4 +++
2 files changed, 61 insertions(+)
diff --git
interrupt
remapping.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 42 -
1 file changed, 37 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remapping.c
index 090ba32
When a device driver issues the first dma_map command for a
device, we assign a new and empty page-table, thus removing all
mappings from the old kernel for the device.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 56
kernel, its phys address will not be save to RTA register,
but when its data is changed, we will save the new data to old root entry table.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 49 +
include/linux/intel-iommu.h | 5
Functions to copy the irte data from the old kernel into the kdump kernel.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 57 +
include/linux/intel-iommu.h | 4 +++
2 files changed, 61 insertions(+)
diff --git
Interfaces for when a new domain in the crashdump kernel needs some
values from the panicked kernel's context entries.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
---
drivers/iommu/intel-iommu.c | 62 +
1 file changed, 62 insertions(+)
diff
TE in kdump kernel.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 142 ++--
1 file changed, 125 insertions(+), 17 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b
function to copy old context entry tables and page tables.
Use unsigned long for physical address.
Change incorrect aw_shift[4] and a few comments in copy_context_entry().
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu
When a device driver issues the first dma_map command for a
device, we assign a new and empty page-table, thus removing all
mappings from the old kernel for the device.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 56
interrupt
remapping.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 42 -
1 file changed, 37 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remapping.c
index d37fd62
Functions to copy the irte data from the old kernel into the kdump kernel.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 62 +
include/linux/intel-iommu.h | 4 +++
2 files changed, 66 insertions(+)
diff --git
TE in kdump kernel.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 135 +++-
1 file changed, 120 insertions(+), 15 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b
Interfaces for when a new domain in the crashdump kernel needs some
values from the panicked kernel's context entries.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 62
-- just enables
a functional change to be made in a later patch.
Bill Sumner:
Original version.
Li, Zhenhua:
Minor change, add change to function __iommu_attach_domain.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel
iommu/vt-d: assign new page table for dma_map
iommu/vt-d: Copy functions for irte
iommu/vt-d: Use old irte in kdump kernel
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh indou.ta...@jp.fujitsu.com
Tested-by: Baoquan He
function to copy old context entry tables and page tables.
Use unsigned long for physical address.
Change incorrect aw_shift[4] and a few comments in copy_context_entry().
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu
-hua:
The functions and logics.
Takao Indoh:
Check if pfn is ram:
if (page_is_ram(pfn))
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh indou.ta...@jp.fujitsu.com
---
drivers/iommu/intel-iommu.c | 97 +
include
kernel, its phys address will not be save to RTA register,
but when its data is changed, we will save the new data to old root entry table.
Li, Zhen-hua:
The functions and logics.
Takao Indoh:
Add __iommu_flush_cache.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh
...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 70 +
1 file changed, 70 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 8d5c400..a71de3f 100644
--- a/drivers/iommu
Functions to copy the irte data from the old kernel into the kdump kernel.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 62 +
include/linux/intel-iommu.h | 4 +++
2 files changed, 66 insertions(+)
diff --git
TE in kdump kernel.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 135 +++-
1 file changed, 120 insertions(+), 15 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b
function to copy old context entry tables and page tables.
Use unsigned long for physical address.
Change incorrect aw_shift[4] and a few comments in copy_context_entry().
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu
interrupt
remapping.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 42 -
1 file changed, 37 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remapping.c
index d37fd62
-hua:
The functions and logics.
Takao Indoh:
Check if pfn is ram:
if (page_is_ram(pfn))
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh indou.ta...@jp.fujitsu.com
---
drivers/iommu/intel-iommu.c | 97 +
include
...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 70 +
1 file changed, 70 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 2dc6250..5ce2850 100644
--- a/drivers/iommu
-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh indou.ta...@jp.fujitsu.com
Tested-by: Baoquan He b...@redhat.com
---
drivers/iommu/intel-iommu.c | 1050 +--
drivers/iommu/intel_irq_remapping.c | 104 +++-
include/linux/intel-iommu.h | 18
-- just enables
a functional change to be made in a later patch.
Bill Sumner:
Original version.
Li, Zhenhua:
Minor change, add change to function __iommu_attach_domain.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel
Interfaces for when a new domain in the crashdump kernel needs some
values from the panicked kernel's context entries.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 62
kernel, its phys address will not be save to RTA register,
but when its data is changed, we will save the new data to old root entry table.
Li, Zhen-hua:
The functions and logics.
Takao Indoh:
Add __iommu_flush_cache.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh
),
+ VTD_PAGE_SIZE);
If this does not work, I have no ideas currently, need to dig the code more.
Regards
Zhenhua
-Original Message-
From: Takao Indoh [mailto:indou.ta...@jp.fujitsu.com]
Sent: Thursday, January 08, 2015 9:00 AM
To: Li, Zhen-Hua; b...@redhat.com
Cc: dw...@infradead.org; j
When a device driver issues the first dma_map command for a device, we
assign a new and empty page-table, thus removing all mappings from the
old kernel for the device.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 54
to copy old context entry tables and page tables.
Use unsigned long for physical address.
Remove the functions to copy page table in Bill's version.
Remove usage of dve and ppap in Bill's version.
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h
Interface for when a new domain in the crashdump kernel needs some
values from the panicked kernel's context entries.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 27 +++
1 file changed, 27 insertions(+)
diff --git a/drivers/iommu/intel
interrupt
remapping.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 43 +++--
1 file changed, 37 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remapping.c
index 20c060b
billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 56 +
1 file changed, 56 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 76674a1..577d5de 100644
--- a/drivers
Functions to copy the irte data from the old kernel into the kdump kernel.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 62 +
include/linux/intel-iommu.h | 4 +++
2 files changed, 66 insertions(+)
diff --git
-hua:
The functions and logics.
Takao Indoh:
Check if pfn is ram:
if (page_is_ram(pfn))
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh indou.ta...@jp.fujitsu.com
---
drivers/iommu/intel-iommu.c | 102
include
and re-enable TE in kdump kernel.
Use the did and gaw from old context entry;
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 118 ++--
1 file changed, 103 insertions(+), 15
kernel, its phys address will not be save to RTA register,
but when its data is changed, we will save the new data to old root entry table.
Li, Zhen-hua:
The functions and logics.
Takao Indoh:
Add __iommu_flush_cache.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh
();
The caller of this function.
Li, Zhenhua:
New function iommu_attach_domain_with_id(), instead of updating funtion
iommu_attach_domain();
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 13 -
1 file
-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 121
include/linux/intel-iommu.h | 3 ++
2 files changed, 124 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu
kernel, its phys address will not be save to RTA register,
but when its data is changed, we will save the new data to old root entry table.
Li, Zhen-hua:
The functions and logics.
Takao Indoh:
Add __iommu_flush_cache.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh
He b...@redhat.com helps testing this patchset.
Takao Indoh indou.ta...@jp.fujitsu.com gives valuable suggestions.
Li, Zhen-Hua (10):
iommu/vt-d: New function to attach domain with id
iommu/vt-d: Items required for kdump
iommu/vt-d: Function to get existing context entry
iommu/vt-d
-enable TE in kdump kernel.
Use the did and gaw from old context entry;
Signed-off-by: Bill Sumner billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 95 +++--
1 file changed, 83 insertions(+), 12
Interface for when a new domain in the old kernel needs some
values from the panicked kernel's context entries.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 23 +++
1 file changed, 23 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b
billsumnerli...@gmail.com
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 72 +
1 file changed, 72 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index cb9d6cc..1e7ceb5 100644
--- a/drivers
interrupt
remapping.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel_irq_remapping.c | 28
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remapping.c
index c2a4406..46d80ad
-hua:
The functions and logics.
Takao Indoh:
Check if pfn is ram:
if (page_is_ram(pfn))
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
Signed-off-by: Takao Indoh indou.ta...@jp.fujitsu.com
---
drivers/iommu/intel-iommu.c | 102
include
When a device driver issues the first dma_map command for a device, we
assign a new and empty page-table, thus removing all mappings from the
old kernel for the device.
Signed-off-by: Li, Zhen-Hua zhen-h...@hp.com
---
drivers/iommu/intel-iommu.c | 58
entry table.
3. Use old interrupt remapping table.
4. Use unsigned long as physical address.
5. Use intel_unmap to unmap the old dma;
Baoquan He b...@redhat.com helps testing this patchset.
Takao Indoh indou.ta...@jp.fujitsu.com gives valuable suggestions.
Li, Zhen-Hua (10):
iommu/vt-d
Thank you very much for this.
zhenhua
From My iPhone
在 2015年5月30日，00:22，Joerg Roedel j...@8bytes.org 写道：
On Mon, May 11, 2015 at 05:52:44PM +0800, Li, Zhen-Hua wrote:
Li, Zhen-Hua (10):
iommu/vt-d: New function to attach domain with id
iommu/vt-d: Items required for kdump
iommu/vt-d
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