This series is intended to be included in v21 of Jarkko's SGX series and
applies on Jarkko's current master:
dfc89a83b5bc ("docs: x86/sgx: Document the enclave API")
The primary goal of the series is to tweak the ioctl for adding pages to
an enclave so that it is somewhat extensible, e.g. add a flags field that
can be reused for access control integration and SGX2/EAUG, and add a size
field so that multiple pages can be added in a single call (batching EADD
has been mentioned at various times in the past).
The secondary goal is to improve the performance of building enclaves.
Handling multiple pages in a single call helps somewhat, but the real win
(for some enclaves) is using the kernel's zero page as the source for EADD
when possible.
Sean Christopherson (7):
x86/sgx: Remove dead code to handle non-existent IOR ioctl
x86/sgx: Remove unnecessary @cmd parameter from ioctl helpers
x86/sgx: Let ioctl helpers do copy to/from user
x86/sgx: Allow userspace to add multiple pages in single ioctl()
x86/sgx: Add flag to zero added region instead of copying from source
x86/sgx: Use the actual zero page as the source when adding zero pages
x86/sgx: Add a reserved field to sgx_enclave_add_region to drop
'packed'
Documentation/x86/sgx/3.API.rst | 2 +-
arch/x86/include/uapi/asm/sgx.h | 30 +--
arch/x86/kernel/cpu/sgx/driver/ioctl.c | 252 +++++++++++++++----------
3 files changed, 171 insertions(+), 113 deletions(-)
--
2.21.0
