diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2020-10-02 17:43:13 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-21 17:36:31 -0400 |
| commit | 66af4f5cb1ee44c41a8433877c859d4b3f922f83 (patch) | |
| tree | e95ebfb755227d3e56daec78da2d3acbb109fa60 /arch/x86/mm/init.c | |
| parent | 8f116a6c7320ce55e8e0885b79ff3518105775b5 (diff) | |
x86/kvm: Update the comment about asynchronous page fault in exc_page_fault()
KVM was switched to interrupt-based mechanism for 'page ready' event
delivery in Linux-5.8 (see commit 2635b5c4a0e4 ("KVM: x86: interrupt based
APF 'page ready' event delivery")) and #PF (ab)use for 'page ready' event
delivery was removed. Linux guest switched to this new mechanism
exclusively in 5.9 (see commit b1d405751cd5 ("KVM: x86: Switch KVM guest to
using interrupts for page ready APF delivery")) so it is not possible to
get #PF for a 'page ready' event even when the guest is running on top
of an older KVM (APF mechanism won't be enabled). Update the comment in
exc_page_fault() to reflect the new reality.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20201002154313.1505327-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/mm/init.c')
0 files changed, 0 insertions, 0 deletions