Identifier (PASID) capabilities to be enabled to support IO page fault.
Disable SVM when ATS, PRI and PASID are not enabled in the device.
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/iommu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel
Move IOMMU capability check and sanity check code to cap_audit files.
Also implement some helper functions for sanity checks.
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 20 +
drivers/iommu/intel/cap_audit.h | 20 +
drivers/iommu/intel/iommu.c | 76
)
- IOTLB Register Offset (IRO)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/Makefile| 4 +-
drivers/iommu/intel/cap_audit.c | 185
drivers/iommu/intel/cap_audit.h | 110 +
drivers/iommu/intel/iommu.c | 9
and rebase to v5.10.
- Change from v1 to v2:
1. Add missing cap/ecaps for audit.
2. Refactor function/macros overal suggested by Lu, Baolu.
2. Skip audit for gfx dedicated IOMMU.
3. Change commit message.
Kyung Min Park (2):
iommu/vt-d: Audit IOMMU Capabilities and add helper functions
Hi Allen,
On Tue, 2021-01-19 at 09:55 +0800, Lu Baolu wrote:
> Hi,
>
> On 1/6/21 9:30 AM, Kyung Min Park wrote:
> > Audit IOMMU Capability/Extended Capability and check if the IOMMUs
> > have
> > the consistent value for features. Report out or scale to the
> >
)
- IOTLB Register Offset (IRO)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/Makefile| 4 +-
drivers/iommu/intel/cap_audit.c | 188
drivers/iommu/intel/cap_audit.h | 106
drivers/iommu/intel/iommu.c | 9
(ERS)
- Page Request Support (PRS)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 11 +++
drivers/iommu/intel/cap_audit.h | 6 ++
drivers/iommu/intel/svm.c | 3 ++-
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel
Move IOMMU capability check and sanity check code to cap_audit files.
Also implement some helper functions for sanity checks.
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 20 +
drivers/iommu/intel/cap_audit.h | 20 +
drivers/iommu/intel/iommu.c | 76
:
1. Add missing cap/ecaps for audit.
2. Refactor function/macros overal suggested by Lu, Baolu.
2. Skip audit for gfx dedicated IOMMU.
3. Change commit message.
Kyung Min Park (3):
iommu/vt-d: Audit IOMMU Capabilities and add helper functions
iommu/vt-d: Move capability check code
(ERS)
- Page Request Support (PRS)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 11 +++
drivers/iommu/intel/cap_audit.h | 6 ++
drivers/iommu/intel/svm.c | 3 ++-
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel
)
- IOTLB Register Offset (IRO)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/Makefile| 2 +-
drivers/iommu/intel/cap_audit.c | 188
drivers/iommu/intel/cap_audit.h | 106
drivers/iommu/intel/iommu.c | 9
Move IOMMU capability check and sanity check code to cap_audit files.
Also implement some helper functions for sanity checks.
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 20 +
drivers/iommu/intel/cap_audit.h | 20 +
drivers/iommu/intel/iommu.c | 76
by Lu, Baolu.
2. Skip audit for gfx dedicated IOMMU.
3. Change commit message.
Kyung Min Park (3):
iommu/vt-d: Audit IOMMU Capabilities and add helper functions
iommu/vt-d: Move capability check code to cap_audit files
iommu/vt-d: Disable SVM in the platform when IOMMUs have
supported CPUID, then guest could make use of it.
Signed-off-by: Cathy Zhang
Signed-off-by: Kyung Min Park
Acked-by: Dave Hansen
Reviewed-by: Tony Luck
---
arch/x86/kvm/cpuid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index
1].
https://software.intel.com/content/www/us/en/develop/download/intel-architecture-instruction-set-extensions-programming-reference.html
Cathy Zhang (1):
x86: Expose AVX512_FP16 for supported CPUID
Kyung Min Park (1):
Enumerate AVX512 FP16 CPUID feature flag
arch/x86/include/asm/cpufeatures.h | 1 +
with
AVX512BW.
The only in-kernel usage of this is kvm passthrough. The CPU feature
flag is shown as "avx512_fp16" in /proc/cpuinfo.
Signed-off-by: Kyung Min Park
Acked-by: Dave Hansen
Reviewed-by: Tony Luck
---
arch/x86/include/asm/cpufeatures.h | 1 +
arch/x86/kernel/cpu/cpuid-deps.c
(ERS)
- Page Request Support (PRS)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 11 +++
drivers/iommu/intel/cap_audit.h | 6 ++
drivers/iommu/intel/svm.c | 3 ++-
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel
Move IOMMU capability check and sanity check code to cap_audit files.
Also implement some helper functions for sanity checks.
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/cap_audit.c | 20 +
drivers/iommu/intel/cap_audit.h | 20 +
drivers/iommu/intel/iommu.c | 76
)
- IOTLB Register Offset (IRO)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/Makefile| 2 +-
drivers/iommu/intel/cap_audit.c | 188
drivers/iommu/intel/cap_audit.h | 106
drivers/iommu/intel/iommu.c | 9
message.
Kyung Min Park (3):
iommu/vt-d: Audit IOMMU Capabilities and add helper functions
iommu/vt-d: Move capability check code to cap_audit files
iommu/vt-d: Disable SVM in the platform when IOMMUs have
inconsistencies
drivers/iommu/intel/Makefile| 2 +-
drivers/iommu/intel
)
- Pasid Size Supported (PSS)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/audit.c | 23 +++
drivers/iommu/intel/audit.h | 27 +++
include/linux/intel-iommu.h | 1 +
3 files changed, 51 insertions(+)
diff --git a/drivers/iommu/intel/audit.c b
)
- Nested Translation Support (NEST)
- Snoop Control (SC)
- Pass Through (PT)
- Device TLB Support (DT)
- Queued Invalidation (QI)
- Page walk Coherency (C)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/audit.c | 48 +
drivers/iommu/intel/audit.h | 43
Specification.
Link:
https://software.intel.com/sites/default/files/managed/c5/15/vt-directed-io-spec.pdf
Kyung Min Park (4):
iommu/vt-d: Disable SVM in the platform when IOMMUs have
inconsistencies
iommu/vt-d: Report out when IOMMU features have inconsistencies
iommu/vt-d: Audit IOMMUs
(ERS)
- Page Request Support (PRS)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/Makefile | 2 +-
drivers/iommu/intel/audit.c | 95
drivers/iommu/intel/audit.h | 29 +++
drivers/iommu/intel/iommu.c | 12 -
4 files changed, 136
plugged.
Report out features when below features are mismatched:
- Posted Interrupts (PI)
- Extended Interrupt Mode (EIM)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/Makefile| 2 +-
drivers/iommu/intel/audit.c | 39 -
drivers/iommu/intel
)
- Nested Translation Support (NEST)
- Snoop Control (SC)
- Pass Through (PT)
- Device TLB Support (DT)
- Queued Invalidation (QI)
- Page walk Coherency (C)
Signed-off-by: Kyung Min Park
---
drivers/iommu/intel/audit.c | 48 +
drivers/iommu/intel/audit.h | 43
Specification.
Link:
https://software.intel.com/sites/default/files/managed/c5/15/vt-directed-io-spec.pdf
Kyung Min Park (4):
iommu/vt-d: Disable SVM in the platform when IOMMUs have
inconsistencies
iommu/vt-d: Report out when IOMMU features have inconsistencies
iommu/vt-d: Audit IOMMUs
The following commit has been merged into the x86/misc branch of tip:
Commit-ID: ea4e3bef4c94d5b5d8e790f37b48b7641172bcf5
Gitweb:
https://git.kernel.org/tip/ea4e3bef4c94d5b5d8e790f37b48b7641172bcf5
Author:Kyung Min Park
AuthorDate:Mon, 31 Aug 2020 11:35:00 -07:00
Neri
Signed-off-by: Ricardo Neri
Signed-off-by: Kyung Min Park
---
ChangeLog:
- Change from v2 to v3:
1. Changed the CPUID custom tool to the one that will be in the kernel
source as suggested by Borislav Petkov.
2. Some change of wording as suggested by Borislav petkov.
- Change from
On Sun, 2020-08-30 at 13:50 +0200, Borislav Petkov wrote:
> On Fri, Aug 28, 2020 at 03:30:32PM -0700, Kyung Min Park wrote:
> > Should I mention the tool specifically although the tool is WIP?
>
> Well, if you wanna look at it that way, the whole kernel is
> constantly
The following commit has been merged into the x86/cpu branch of tip:
Commit-ID: 18ec63faefb3fd311822556cd9b949f66b1eecee
Gitweb:
https://git.kernel.org/tip/18ec63faefb3fd311822556cd9b949f66b1eecee
Author:Kyung Min Park
AuthorDate:Tue, 25 Aug 2020 08:47:57 +08:00
Committer
Hi Boris,
On Fri, 2020-08-28 at 20:42 +0200, Borislav Petkov wrote:
> On Mon, Aug 24, 2020 at 11:04:12AM -0700, Kyung Min Park wrote:
> > +If the expected flag does not appear in /proc/cpuinfo, things are
> > murkier.
> > +Users need to find out the reason why the fla
Neri
Signed-off-by: Ricardo Neri
Signed-off-by: Kyung Min Park
---
ChangeLog:
- Change from v1 to v2:
1. Removed patches of adding feature flags (TSXLDTRK, SERIALIZE) from this
patchset.
2. Removed the cover letter.
3. Some change of wording in Documentation/x86/cpuinfo.rst
t;
> Detailed information on the instructions and CPUID feature flag
> TSXLDTRK
> can be found in the latest Intel Architecture Instruction Set
> Extensions
> and Future Features Programming Reference and Intel 64 and IA-32
> Architectures Software Developer's Manual.
>
> Sign
Hi Borislav,
On Mon, 2020-06-15 at 20:15 +0200, Borislav Petkov wrote:
> On Wed, Jun 10, 2020 at 01:06:59PM -0700, Kyung Min Park wrote:
> > Add documentation for /proc/cpuinfo feature flags enumeration.
> > Document how and when x86 feature flags are used. Also discuss what
>
to users.
Include two instances of features for which there are not implemented
use cases in the kernel.
Patch 1 creates a new documentation for /proc/cpuinfo flags bits.
Patch 2 adds X86_FEATURE_SERIALIZE.
Patch 3 adds X86_FEATURE_TSXLDTRK.
This RFC series has been reviewed by Dave Hansen.
Kyung Min
-off-by: Kyung Min Park
---
Documentation/x86/cpuinfo.rst | 152 ++
Documentation/x86/index.rst | 1 +
2 files changed, 153 insertions(+)
create mode 100644 Documentation/x86/cpuinfo.rst
diff --git a/Documentation/x86/cpuinfo.rst b/Documentation/x86/cpuinfo.rst
uction Set Extensions
and Future Features Programming Reference and Intel 64 and IA-32
Architectures Software Developer's Manual.
Signed-off-by: Kyung Min Park
---
arch/x86/include/asm/cpufeatures.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/cpufeatures.h
b/arch/x
From: Ricardo Neri
This instruction gives software a way to force the processor to complete
all modifications to flags, registers and memory from previous instructions
and drain all buffered writes to memory before the next instruction is
fetched and executed.
The same effect can be obtained
The following commit has been merged into the x86/timers branch of tip:
Commit-ID: 46f90c7aad62be1af76588108c730d826308a801
Gitweb:
https://git.kernel.org/tip/46f90c7aad62be1af76588108c730d826308a801
Author:Kyung Min Park
AuthorDate:Fri, 24 Apr 2020 12:37:55 -07:00
The following commit has been merged into the x86/timers branch of tip:
Commit-ID: cec5f268cd02d25d2d74807843d8ae0292fe0fb7
Gitweb:
https://git.kernel.org/tip/cec5f268cd02d25d2d74807843d8ae0292fe0fb7
Author:Kyung Min Park
AuthorDate:Fri, 24 Apr 2020 12:37:56 -07:00
Add the Atom Tremont model number to the Intel family list.
Signed-off-by: Kyung Min Park
---
arch/x86/include/asm/intel-family.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/intel-family.h
b/arch/x86/include/asm/intel-family.h
index 0278aa6..02d675d 100644
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