From: Adrian Huang
When enabling VMD and IOMMU scalable mode, the following kernel panic
call trace/kernel log is shown in Eagle Stream platform (Sapphire Rapids
CPU) during booting:
pci :59:00.5: Adding to iommu group 42
...
vmd :59:00.5: PCI host bridge to bus 1:80
pci 1:80
From: Adrian Huang
When enabling VMD and IOMMU scalable mode, the following kernel panic
call trace/kernel log is shown in Eagle Stream platform (Sapphire Rapids
CPU) during booting:
pci :59:00.5: Adding to iommu group 42
...
vmd :59:00.5: PCI host bridge to bus 1:80
pci 1:80
From: Adrian Huang
From: Adrian Huang
The values of local variables are assigned after local variables
are declared, so no need to assign the initial value during the
variable declaration.
And, no need to assign NULL for the local variable 'ivrs_base'
after invoking acpi_put_table().
Signed
From: Adrian Huang
The values of local variables are assigned after local variables
are declared, so no need to assign the initial value during the
variable declaration.
And, no need to assign NULL for the local variable 'ivrs_base'
after invoking acpi_put_table().
Signed-off-by: Adrian Huang
From: Adrian Huang
Commit 387caf0b759a ("iommu/amd: Treat per-device exclusion
ranges as r/w unity-mapped regions") accidentally overwrites
the 'flags' field in IVMD (struct ivmd_header) when the I/O
virtualization memory definition is associated with the
exclusion range entry.
From: Adrian Huang
The SPA of the GCR3 table root pointer[51:31] masks 20 bits. However,
this requires 21 bits (Please see the AMD IOMMU specification).
This leads to the potential failure when the bit 51 of SPA of
the GCR3 table root pointer is 1'.
Signed-off-by: Adrian Huang
---
drivers
From: Adrian Huang
The assignment of the global variable 'iommu_detected' has been
moved from amd_iommu_init_dma_ops() to amd_iommu_detect(), so
this patch removes the assignment in amd_iommu_init_dma_ops().
Signed-off-by: Adrian Huang
---
drivers/iommu/amd_iommu.c | 1 -
1 file changed, 1
This series optimizes the register reading by using readq instead of
readl and cleans up the unused variables.
Adrian Huang (2):
iommu/amd: Replace two consecutive readl calls with one readq
iommu/amd: Remove unused struct member
drivers/iommu/amd_iommu_init.c | 6 +-
drivers/iommu
From: Adrian Huang
Optimize the reigster reading by using readq instead of the two
consecutive readl calls.
Signed-off-by: Adrian Huang
---
drivers/iommu/amd_iommu_init.c | 6 +-
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu
From: Adrian Huang
Commit c805b428f206 ("iommu/amd: Remove amd_iommu_pd_list") removes
the global list for the allocated protection domains. The
corresponding member 'list' of the protection_domain struct is
not used anymore, so it can be removed.
Signed-off-by: Adrian Huang
---
dri
From: Adrian Huang
The bit 13 and bit 14 of the IOMMU control register are
PPRLogEn and PPRIntEn. They are related to PPR (Peripheral Page
Request) instead of 'PPF'. Fix them accrodingly.
Signed-off-by: Adrian Huang
---
drivers/iommu/amd_iommu_init.c | 4 ++--
drivers/iommu/amd_iommu_types.h
From: Adrian Huang
The usage of the local variables 'range' and 'misc' was removed
from commit 226e889b20a9 ("iommu/amd: Remove first/last_device handling")
and commit 23c742db2171 ("iommu/amd: Split out PCI related parts of
IOMMU initialization"). So, remove them accr
://lists.linuxfoundation.org/pipermail/iommu/2019-November/040140.html
Suggested-by: Joerg Roedel
Signed-off-by: Adrian Huang
---
drivers/iommu/amd_iommu_init.c | 20 ++--
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index
rdware. Note that the first
IVMD still uses the exclusion range.
Signed-off-by: Adrian Huang
---
drivers/iommu/amd_iommu_init.c | 33 +++--
1 file changed, 31 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index
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