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KVM: VMX: Fix IBRS handling after vmexit
authorJosh Poimboeuf <jpoimboe@kernel.org>
Thu, 27 Oct 2022 20:55:31 +0000 (13:55 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 1 Nov 2022 18:14:45 +0000 (19:14 +0100)
commit647457858c548364f482676d8b4abddd1c9255b2
tree17969046ea0b528159cb7cfa7dd8f5b2abc08e6etree | snapshot (tar.gz zip)
parentace9857c7c4144b59a5843812a6d55762d304605commit | diff
KVM: VMX: Fix IBRS handling after vmexit

commit bea7e31a5caccb6fe8ed989c065072354f0ecb52 upstream.

For legacy IBRS to work, the IBRS bit needs to be always re-written
after vmexit, even if it's already on.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kvm/vmx.c diff | blob | blame | history