Adding debian version 4.19.249-2.debian/4.19.249-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/debian/patches-rt/0211-KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch b/debian/patches-rt/0211-KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch
new file mode 100644
index 000000000..a49a4c01e
--- /dev/null
+++ b/debian/patches-rt/0211-KVM-arm-arm64-downgrade-preempt_disable-d-region-to-.patch
@@ -0,0 +1,59 @@
+From e3788b349ef7d4161dc666a0aca9fc054c913c04 Mon Sep 17 00:00:00 2001
+From: Josh Cartwright <joshc@ni.com>
+Date: Thu, 11 Feb 2016 11:54:01 -0600
+Subject: [PATCH 211/347] KVM: arm/arm64: downgrade preempt_disable()d region
+ to migrate_disable()
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+kvm_arch_vcpu_ioctl_run() disables the use of preemption when updating
+the vgic and timer states to prevent the calling task from migrating to
+another CPU.  It does so to prevent the task from writing to the
+incorrect per-CPU GIC distributor registers.
+
+On -rt kernels, it's possible to maintain the same guarantee with the
+use of migrate_{disable,enable}(), with the added benefit that the
+migrate-disabled region is preemptible.  Update
+kvm_arch_vcpu_ioctl_run() to do so.
+
+Cc: Christoffer Dall <christoffer.dall@linaro.org>
+Reported-by: Manish Jaggi <Manish.Jaggi@caviumnetworks.com>
+Signed-off-by: Josh Cartwright <joshc@ni.com>
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ virt/kvm/arm/arm.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
+index b943ec5345cb..ddc6db1e8cd2 100644
+--- a/virt/kvm/arm/arm.c
++++ b/virt/kvm/arm/arm.c
+@@ -725,7 +725,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ 		 * involves poking the GIC, which must be done in a
+ 		 * non-preemptible context.
+ 		 */
+-		preempt_disable();
++		migrate_disable();
+ 
+ 		kvm_pmu_flush_hwstate(vcpu);
+ 
+@@ -774,7 +774,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ 				kvm_timer_sync_hwstate(vcpu);
+ 			kvm_vgic_sync_hwstate(vcpu);
+ 			local_irq_enable();
+-			preempt_enable();
++			migrate_enable();
+ 			continue;
+ 		}
+ 
+@@ -852,7 +852,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
+ 		/* Exit types that need handling before we can be preempted */
+ 		handle_exit_early(vcpu, run, ret);
+ 
+-		preempt_enable();
++		migrate_enable();
+ 
+ 		ret = handle_exit(vcpu, run, ret);
+ 	}
+-- 
+2.36.1
+