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| author | Christoph Schlameuss <schlameuss@linux.ibm.com> | 2024-12-16 10:21:35 +0100 |
|---|---|---|
| committer | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2025-01-07 16:36:10 +0100 |
| commit | df989238fa46039393f0af5cfb93a863a233c061 (patch) | |
| tree | 49b538b469c414387e3e35695096c45595bd24ff /Documentation | |
| parent | KVM: s390: vsie: fix virtual/physical address in unpin_scb() (diff) | |
| download | linux-df989238fa46039393f0af5cfb93a863a233c061.tar.xz linux-df989238fa46039393f0af5cfb93a863a233c061.zip | |
KVM: s390: Reject setting flic pfault attributes on ucontrol VMs
Prevent null pointer dereference when processing the
KVM_DEV_FLIC_APF_ENABLE and KVM_DEV_FLIC_APF_DISABLE_WAIT ioctls in the
interrupt controller.
Fixes: 3c038e6be0e2 ("KVM: async_pf: Async page fault support on s390")
Reported-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Christoph Schlameuss <schlameuss@linux.ibm.com>
Reviewed-by: Hariharan Mari <hari55@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Link: https://lore.kernel.org/r/20241216092140.329196-2-schlameuss@linux.ibm.com
Message-ID: <20241216092140.329196-2-schlameuss@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virt/kvm/devices/s390_flic.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/virt/kvm/devices/s390_flic.rst b/Documentation/virt/kvm/devices/s390_flic.rst index ea96559ba501..b784f8016748 100644 --- a/Documentation/virt/kvm/devices/s390_flic.rst +++ b/Documentation/virt/kvm/devices/s390_flic.rst @@ -58,11 +58,15 @@ Groups: Enables async page faults for the guest. So in case of a major page fault the host is allowed to handle this async and continues the guest. + -EINVAL is returned when called on the FLIC of a ucontrol VM. + KVM_DEV_FLIC_APF_DISABLE_WAIT Disables async page faults for the guest and waits until already pending async page faults are done. This is necessary to trigger a completion interrupt for every init interrupt before migrating the interrupt list. + -EINVAL is returned when called on the FLIC of a ucontrol VM. + KVM_DEV_FLIC_ADAPTER_REGISTER Register an I/O adapter interrupt source. Takes a kvm_s390_io_adapter describing the adapter to register:: |