linux-kernel - [PATCH 078/104] KVM: disable tpr/cr8 sync when in-kernel APIC is used

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 17 Sep 2007 10:32:00 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, "He, Qing" <qing.he@...el.com>
Subject: [PATCH 078/104] KVM: disable tpr/cr8 sync when in-kernel APIC is used

From: He, Qing <qing.he@...el.com>

Signed-off-by: Qing He <qing.he@...el.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>
---
 drivers/kvm/kvm_main.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index f4cbd4f..a25dfc9 100644
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -2005,7 +2005,8 @@ static int kvm_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 		sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
 
 	/* re-sync apic's tpr */
-	set_cr8(vcpu, kvm_run->cr8);
+	if (!irqchip_in_kernel(vcpu->kvm))
+		set_cr8(vcpu, kvm_run->cr8);
 
 	if (vcpu->pio.cur_count) {
 		r = complete_pio(vcpu);
-- 
1.5.3

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/