Revision b5861e5cf2fcf83031ea3e26b0a69d887adf7d21 authored by Liran Alon on 03 September 2018, 12:20:22 UTC, committed by Radim Krčmář on 07 September 2018, 16:38:42 UTC
Consider the case L1 had a IRQ/NMI event until it executed VMLAUNCH/VMRESUME which wasn't delivered because it was disallowed (e.g. interrupts disabled). When L1 executes VMLAUNCH/VMRESUME, L0 needs to evaluate if this pending event should cause an exit from L2 to L1 or delivered directly to L2 (e.g. In case L1 don't intercept EXTERNAL_INTERRUPT). Usually this would be handled by L0 requesting a IRQ/NMI window by setting VMCS accordingly. However, this setting was done on VMCS01 and now VMCS02 is active instead. Thus, when L1 executes VMLAUNCH/VMRESUME we force L0 to perform pending event evaluation by requesting a KVM_REQ_EVENT. Note that above scenario exists when L1 KVM is about to enter L2 but requests an "immediate-exit". As in this case, L1 will disable-interrupts and then send a self-IPI before entering L2. Reviewed-by: Nikita Leshchenko <nikita.leshchenko@oracle.com> Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Liran Alon <liran.alon@oracle.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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| File | Mode | Size |
|---|---|---|
| 00-INDEX | -rw-r--r-- | 2.5 KB |
| api.txt | -rw-r--r-- | 11.9 KB |
| arkfb.txt | -rw-r--r-- | 2.0 KB |
| aty128fb.txt | -rw-r--r-- | 2.1 KB |
| cirrusfb.txt | -rw-r--r-- | 1.9 KB |
| cmap_xfbdev.txt | -rw-r--r-- | 1.9 KB |
| deferred_io.txt | -rw-r--r-- | 3.0 KB |
| efifb.txt | -rw-r--r-- | 787 bytes |
| ep93xx-fb.txt | -rw-r--r-- | 4.2 KB |
| fbcon.txt | -rw-r--r-- | 12.1 KB |
| framebuffer.txt | -rw-r--r-- | 14.0 KB |
| gxfb.txt | -rw-r--r-- | 1.2 KB |
| intel810.txt | -rw-r--r-- | 8.3 KB |
| intelfb.txt | -rw-r--r-- | 3.7 KB |
| internals.txt | -rw-r--r-- | 2.6 KB |
| lxfb.txt | -rw-r--r-- | 1.2 KB |
| matroxfb.txt | -rw-r--r-- | 19.1 KB |
| metronomefb.txt | -rw-r--r-- | 2.0 KB |
| modedb.txt | -rw-r--r-- | 6.7 KB |
| pvr2fb.txt | -rw-r--r-- | 2.2 KB |
| pxafb.txt | -rw-r--r-- | 4.6 KB |
| s3fb.txt | -rw-r--r-- | 2.5 KB |
| sa1100fb.txt | -rw-r--r-- | 1.3 KB |
| sh7760fb.txt | -rw-r--r-- | 4.4 KB |
| sisfb.txt | -rw-r--r-- | 6.3 KB |
| sm501.txt | -rw-r--r-- | 290 bytes |
| sm712fb.txt | -rw-r--r-- | 752 bytes |
| sstfb.txt | -rw-r--r-- | 6.7 KB |
| tgafb.txt | -rw-r--r-- | 2.4 KB |
| tridentfb.txt | -rw-r--r-- | 2.6 KB |
| udlfb.txt | -rw-r--r-- | 7.0 KB |
| uvesafb.txt | -rw-r--r-- | 6.7 KB |
| vesafb.txt | -rw-r--r-- | 6.1 KB |
| viafb.modes | -rw-r--r-- | 30.8 KB |
| viafb.txt | -rw-r--r-- | 9.6 KB |
| vt8623fb.txt | -rw-r--r-- | 1.8 KB |
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