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KVM: x86/xen: Only do in-kernel acceleration of hypercalls for guest CPL0
authorDavid Woodhouse <dwmw@amazon.co.uk>
Sat, 12 Nov 2022 13:52:25 +0000 (13:52 +0000)
committerDavid Woodhouse <dwmw@amazon.co.uk>
Sat, 19 Nov 2022 09:39:48 +0000 (09:39 +0000)
commitd66ae1d8f45f02ca996947d9cb1c23f6f7762777
tree01f7ec899f2bcf437abe398a17f6f7e291a4be21tree
parentbd014cbc0f06d79d5d3d99f0506d18deeb0b580ecommit | diff
KVM: x86/xen: Only do in-kernel acceleration of hypercalls for guest CPL0

There are almost no hypercalls which are valid from CPL > 0, and definitely
none which are handled by the kernel.

Reported-by: Michal Luczaj <mhal@rbox.co>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Cc: stable@kernel.org
arch/x86/kvm/xen.c diff | blob | history
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