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(parent: 3ecacdb) | patch
x86/sev-es: Support CPU offline/online
authorJoerg Roedel <jroedel@suse.de>
Mon, 7 Sep 2020 13:16:10 +0000 (15:16 +0200)
committerBorislav Petkov <bp@suse.de>
Wed, 9 Sep 2020 09:33:20 +0000 (11:33 +0200)
commit094794f59720d7e877a1eeb372ecedeed6b441ab
tree90bf02f1584235a544dff87863dd9674398ba158tree | snapshot
parent3ecacdbd23956a549d93023f86adc87b4a9d6520commit | diff
x86/sev-es: Support CPU offline/online

Add a play_dead handler when running under SEV-ES. This is needed
because the hypervisor can't deliver an SIPI request to restart the AP.
Instead, the kernel has to issue a VMGEXIT to halt the VCPU until the
hypervisor wakes it up again.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20200907131613.12703-70-joro@8bytes.org
arch/x86/include/uapi/asm/svm.h diff | blob | history
arch/x86/kernel/sev-es.c diff | blob | history
Domain: System / Kernel;