[RFC/RFT PATCH 0/2] x86: sgx_vepc: implement ioctl to EREMOVE all pages

Paolo Bonzini
2021-09-13T13:12:02Z

Based on discussions from the previous week(end), this series implements
a ioctl that performs EREMOVE on all pages mapped by a /dev/sgx_vepc
file descriptor. Other possibilities, such as closing and reopening
the device, are racy.

The patches are untested, but I am posting them because they are simple
and so that Yang Zhong can try using them in QEMU.

Paolo

Paolo Bonzini (2):
x86: sgx_vepc: extract sgx_vepc_remove_page
x86: sgx_vepc: implement SGX_IOC_VEPC_REMOVE ioctl

arch/x86/include/uapi/asm/sgx.h | 2 ++
arch/x86/kernel/cpu/sgx/virt.c | 48 ++++++++++++++++++++++++++++++---
2 files changed, 47 insertions(+), 3 deletions(-)

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2.27.0