]> git.hungrycats.org Git - linux/commit
x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()
authorNicolai Stange <nstange@suse.de>
Sun, 22 Jul 2018 11:38:18 +0000 (13:38 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 15 Aug 2018 16:11:07 +0000 (18:11 +0200)
commita09777bcd347a2c9ee701b054c10eca3171baa43
tree312ec3781a64d86b3befa07e214a2145d52c34f3
parentde446dc3cf1ba99a0a7f1fe3286cc1b5d4579807
x86/KVM/VMX: Don't set l1tf_flush_l1d from vmx_handle_external_intr()

commit 18b57ce2eb8c8b9a24174a89250cf5f57c76ecdc upstream

For VMEXITs caused by external interrupts, vmx_handle_external_intr()
indirectly calls into the interrupt handlers through the host's IDT.

It follows that these interrupts get accounted for in the
kvm_cpu_l1tf_flush_l1d per-cpu flag.

The subsequently executed vmx_l1d_flush() will thus be aware that some
interrupts have happened and conduct a L1d flush anyway.

Setting l1tf_flush_l1d from vmx_handle_external_intr() isn't needed
anymore. Drop it.

Signed-off-by: Nicolai Stange <nstange@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kvm/vmx.c