From: Justin Terry (VM) via Qemu-devel <qemu-devel@nongnu.org>
Date: Mon, 26 Feb 2018 17:13:32 +0000 (-0800)
Subject: Fix WHPX additional lock acquisition
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b27350e1b992eca3fa4b3fea4065b1b3897ec57f;p=qemu.git

Fix WHPX additional lock acquisition

The code already is holding the qemu_mutex for the IO thread. We do not need
to additionally take the lock again in this case.

Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>
Message-Id: <1519665216-1078-5-git-send-email-juterry@microsoft.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Justin Terry (VM) via Qemu-devel <qemu-devel@nongnu.org>
---

diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c
index 14ea732ec6..74a8f4d599 100644
--- a/target/i386/whpx-all.c
+++ b/target/i386/whpx-all.c
@@ -705,9 +705,7 @@ static void whpx_vcpu_pre_run(CPUState *cpu)
             new_int.InterruptionVector = 2;
         }
         if (cpu->interrupt_request & CPU_INTERRUPT_SMI) {
-            qemu_mutex_lock_iothread();
             cpu->interrupt_request &= ~CPU_INTERRUPT_SMI;
-            qemu_mutex_unlock_iothread();
         }
     }