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

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Message-Id: <20210913131153.1202354-1-pbonzini@redhat.com>
Date:   Mon, 13 Sep 2021 09:11:51 -0400
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:     x86@...nel.org, linux-sgx@...r.kernel.org, jarkko@...nel.org,
        dave.hansen@...ux.intel.com, yang.zhong@...el.com
Subject: [RFC/RFT PATCH 0/2] x86: sgx_vepc: implement ioctl to EREMOVE all pages

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(-)

-- 
2.27.0