diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2022-03-03 15:41:15 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-02 05:41:13 -0400 |
| commit | 7caf9571563eade546976d600dd023674b1c3185 (patch) | |
| tree | d0b21a5ef5483654d759800d905fdce6de2956a3 /include/linux/atomic.h | |
| parent | 916d3608df8265a2e3f6214200dbb0b39a5ca383 (diff) | |
KVM: x86/xen: Use gfn_to_pfn_cache for vcpu_info
Currently, the fast path of kvm_xen_set_evtchn_fast() doesn't set the
index bits in the target vCPU's evtchn_pending_sel, because it only has
a userspace virtual address with which to do so. It just sets them in
the kernel, and kvm_xen_has_interrupt() then completes the delivery to
the actual vcpu_info structure when the vCPU runs.
Using a gfn_to_pfn_cache allows kvm_xen_set_evtchn_fast() to do the full
delivery in the common case.
Clean up the fallback case too, by moving the deferred delivery out into
a separate kvm_xen_inject_pending_events() function which isn't ever
called in atomic contexts as __kvm_xen_has_interrupt() is.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220303154127.202856-6-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/atomic.h')
0 files changed, 0 insertions, 0 deletions