user/sven/linux.git/Documentation/userspace-api, branch v5.11.10

Merge tag 'x86_sgx_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-12-14T21:14:57Z

Pull x86 SGC support from Borislav Petkov: "Intel Software Guard eXtensions enablement. This has been long in the making, we were one revision number short of 42. :) Intel SGX is new hardware functionality that can be used by applications to populate protected regions of user code and data called enclaves. Once activated, the new hardware protects enclave code and data from outside access and modification. Enclaves provide a place to store secrets and process data with those secrets. SGX has been used, for example, to decrypt video without exposing the decryption keys to nosy debuggers that might be used to subvert DRM. Software has generally been rewritten specifically to run in enclaves, but there are also projects that try to run limited unmodified software in enclaves. Most of the functionality is concentrated into arch/x86/kernel/cpu/sgx/ except the addition of a new mprotect() hook to control enclave page permissions and support for vDSO exceptions fixup which will is used by SGX enclaves. All this work by Sean Christopherson, Jarkko Sakkinen and many others" * tag 'x86_sgx_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) x86/sgx: Return -EINVAL on a zero length buffer in sgx_ioc_enclave_add_pages() x86/sgx: Fix a typo in kernel-doc markup x86/sgx: Fix sgx_ioc_enclave_provision() kernel-doc comment x86/sgx: Return -ERESTARTSYS in sgx_ioc_enclave_add_pages() selftests/sgx: Use a statically generated 3072-bit RSA key x86/sgx: Clarify 'laundry_list' locking x86/sgx: Update MAINTAINERS Documentation/x86: Document SGX kernel architecture x86/sgx: Add ptrace() support for the SGX driver x86/sgx: Add a page reclaimer selftests/x86: Add a selftest for SGX x86/vdso: Implement a vDSO for Intel SGX enclave call x86/traps: Attempt to fixup exceptions in vDSO before signaling x86/fault: Add a helper function to sanitize error code x86/vdso: Add support for exception fixup in vDSO functions x86/sgx: Add SGX_IOC_ENCLAVE_PROVISION x86/sgx: Add SGX_IOC_ENCLAVE_INIT x86/sgx: Add SGX_IOC_ENCLAVE_ADD_PAGES x86/sgx: Add SGX_IOC_ENCLAVE_CREATE x86/sgx: Add an SGX misc driver interface ...

media: doc: pixfmt-yuv: Move all planar YUV formats to common file

2020-12-07T13:22:34Z

Planar pixel formats are documented in separate files. This duplicates information, as those formats share comon traits. Consolidate them in a single file and summarize their descriptions in a single table. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-yuv: Move all semi-planar YUV formats to common file

2020-12-07T13:21:49Z

Semi-planar pixel formats are documented in separate files. This duplicates information, as those formats share comon traits. Consolidate them in a single file and summarize their descriptions in a single table. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-yuv: Move all luma-only YUV formats to common file

2020-12-07T13:21:11Z

Luma-only pixel formats are documented in separate files. This duplicates information, as those formats share comon traits. Consolidate them in a single file and describe them in a single table. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-packed-yuv: Clarify naming scheme for 4:4:4 formats

2020-12-07T13:20:14Z

Document the naming scheme for the existing packed YUV 4:4:4 formats, as previously done for the RGB formats. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-packed-yuv: Express 4:4:4 formats in a more compact way

2020-12-07T13:19:35Z

The 4:4:4 packed YUV formats are documented with a bit-level representation, which creates a wide table. Switch to a byte-oriented representation to make it more compact. This prepares for the addition of formats with more than 8 bits per component, that would make the table way too wide. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-packed-yuv: Fill padding bits with 'X'

2020-12-07T13:12:37Z

The padding bits are left blank, which look weird in the XYUV format, and, worse, may lead to the VUYX format to be understand as consuming 3 bytes per pixel. Add 'X' for padding bits as we do for RGB formats. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-yuv: Move all packed YUV formats to common file

2020-12-07T13:11:39Z

The pixfmt-packed-yuv.rst file documents packed YUV 4:4:4 formats, but is titled generically as "Packed YUV formats". 4:2:2 and 4:1:1 packed YUV formats are documented in separate files, which can be confusing. Group all packed YUV formats in pixfmt-packed-yuv.rst, which allows documenting the 4:2:2 formats in a more concise way. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-yuv: Document subsampling in more details

2020-12-07T13:10:27Z

Document YUV subsampling, including chroma spatial siting, and replace the siting examples in individual formats by references to the common documentation. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

media: doc: pixfmt-rgb: Replace '-' with 'X' to denote padding

2020-12-07T13:08:01Z

Using '-' to represent padding bits and bytes make text and tables more difficult to read. Use 'x' and 'X' instead. Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab