* Sat Feb 03 2024 Jon Maloy <jmaloy@redhat.com> - 6.2.0-47
- kvm-s390x-pci-avoid-double-enable-disable-of-aif.patch [RHEL-22411] - kvm-s390x-pci-refresh-fh-before-disabling-aif.patch [RHEL-22411] - kvm-s390x-pci-drive-ISM-reset-from-subsystem-reset.patch [RHEL-22411] - Resolves: RHEL-22411 ([s390x] VM fails to start with ISM passed through)
This commit is contained in:
Jon Maloy
parent
6bbe5c7492
commit
248e8acca4
106
kvm-s390x-pci-avoid-double-enable-disable-of-aif.patch
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106
kvm-s390x-pci-avoid-double-enable-disable-of-aif.patch
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From 52ad0cc8a82f7a4c3581146fb4d2046898163c4e Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
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Date: Tue, 23 Jan 2024 13:59:24 +0100
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Subject: [PATCH 1/3] s390x/pci: avoid double enable/disable of aif
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cédric Le Goater <clg@redhat.com>
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RH-MergeRequest: 349: s390x: Fix reset ordering of passthrough ISM devices
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RH-Jira: RHEL-22411
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Commit: [1/3] 450e4ca607d801bce93415994250374d70fb72f6
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JIRA: https://issues.redhat.com/browse/RHEL-22411
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commit 07b2c8e034d80ff92e202405c494d2ff80fcf848
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Author: Matthew Rosato <mjrosato@linux.ibm.com>
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Date: Thu Jan 18 13:51:49 2024 -0500
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s390x/pci: avoid double enable/disable of aif
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Use a flag to keep track of whether AIF is currently enabled. This can be
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used to avoid enabling/disabling AIF multiple times as well as to determine
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whether or not it should be disabled during reset processing.
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Fixes: d0bc7091c2 ("s390x/pci: enable adapter event notification for interpreted devices")
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Reported-by: Cédric Le Goater <clg@redhat.com>
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Reviewed-by: Eric Farman <farman@linux.ibm.com>
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Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
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Message-ID: <20240118185151.265329-2-mjrosato@linux.ibm.com>
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Reviewed-by: Cédric Le Goater <clg@redhat.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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---
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hw/s390x/s390-pci-kvm.c | 25 +++++++++++++++++++++++--
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include/hw/s390x/s390-pci-bus.h | 1 +
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2 files changed, 24 insertions(+), 2 deletions(-)
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diff --git a/hw/s390x/s390-pci-kvm.c b/hw/s390x/s390-pci-kvm.c
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index ff41e4106d..1ee510436c 100644
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--- a/hw/s390x/s390-pci-kvm.c
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+++ b/hw/s390x/s390-pci-kvm.c
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@@ -27,6 +27,7 @@ bool s390_pci_kvm_interp_allowed(void)
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int s390_pci_kvm_aif_enable(S390PCIBusDevice *pbdev, ZpciFib *fib, bool assist)
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{
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+ int rc;
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struct kvm_s390_zpci_op args = {
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.fh = pbdev->fh,
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.op = KVM_S390_ZPCIOP_REG_AEN,
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@@ -38,15 +39,35 @@ int s390_pci_kvm_aif_enable(S390PCIBusDevice *pbdev, ZpciFib *fib, bool assist)
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.u.reg_aen.flags = (assist) ? 0 : KVM_S390_ZPCIOP_REGAEN_HOST
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};
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- return kvm_vm_ioctl(kvm_state, KVM_S390_ZPCI_OP, &args);
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+ if (pbdev->aif) {
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+ return -EINVAL;
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+ }
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+
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+ rc = kvm_vm_ioctl(kvm_state, KVM_S390_ZPCI_OP, &args);
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+ if (rc == 0) {
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+ pbdev->aif = true;
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+ }
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+
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+ return rc;
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}
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int s390_pci_kvm_aif_disable(S390PCIBusDevice *pbdev)
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{
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+ int rc;
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+
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struct kvm_s390_zpci_op args = {
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.fh = pbdev->fh,
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.op = KVM_S390_ZPCIOP_DEREG_AEN
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};
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- return kvm_vm_ioctl(kvm_state, KVM_S390_ZPCI_OP, &args);
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+ if (!pbdev->aif) {
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+ return -EINVAL;
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+ }
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+
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+ rc = kvm_vm_ioctl(kvm_state, KVM_S390_ZPCI_OP, &args);
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+ if (rc == 0) {
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+ pbdev->aif = false;
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+ }
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+
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+ return rc;
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}
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diff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h
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index e0a9f9385b..7a658f5e30 100644
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--- a/include/hw/s390x/s390-pci-bus.h
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+++ b/include/hw/s390x/s390-pci-bus.h
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@@ -361,6 +361,7 @@ struct S390PCIBusDevice {
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bool unplug_requested;
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bool interp;
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bool forwarding_assist;
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+ bool aif;
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QTAILQ_ENTRY(S390PCIBusDevice) link;
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};
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--
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2.41.0
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137
kvm-s390x-pci-drive-ISM-reset-from-subsystem-reset.patch
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137
kvm-s390x-pci-drive-ISM-reset-from-subsystem-reset.patch
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@ -0,0 +1,137 @@
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From dda71c431be22772f3241af45b62737c988e85d4 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
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Date: Tue, 23 Jan 2024 13:59:24 +0100
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Subject: [PATCH 3/3] s390x/pci: drive ISM reset from subsystem reset
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cédric Le Goater <clg@redhat.com>
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RH-MergeRequest: 349: s390x: Fix reset ordering of passthrough ISM devices
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RH-Jira: RHEL-22411
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Commit: [3/3] 42e89595dd5e24538a2d3f075391b4534497eece
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JIRA: https://issues.redhat.com/browse/RHEL-22411
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commit 68c691ca99a2538d6a53a70ce8a9ce06ee307ff1
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Author: Matthew Rosato <mjrosato@linux.ibm.com>
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Date: Thu Jan 18 13:51:51 2024 -0500
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s390x/pci: drive ISM reset from subsystem reset
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ISM devices are sensitive to manipulation of the IOMMU, so the ISM device
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needs to be reset before the vfio-pci device is reset (triggering a full
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UNMAP). In order to ensure this occurs, trigger ISM device resets from
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subsystem_reset before triggering the PCI bus reset (which will also
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trigger vfio-pci reset). This only needs to be done for ISM devices
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which were enabled for use by the guest.
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Further, ensure that AIF is disabled as part of the reset event.
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Fixes: ef1535901a ("s390x: do a subsystem reset before the unprotect on reboot")
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Fixes: 03451953c7 ("s390x/pci: reset ISM passthrough devices on shutdown and system reset")
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Reported-by: Cédric Le Goater <clg@redhat.com>
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Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
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Message-ID: <20240118185151.265329-4-mjrosato@linux.ibm.com>
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Reviewed-by: Eric Farman <farman@linux.ibm.com>
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Reviewed-by: Cédric Le Goater <clg@redhat.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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---
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hw/s390x/s390-pci-bus.c | 26 +++++++++++++++++---------
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hw/s390x/s390-virtio-ccw.c | 8 ++++++++
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include/hw/s390x/s390-pci-bus.h | 1 +
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3 files changed, 26 insertions(+), 9 deletions(-)
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diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
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index 2d92848b0f..a8953693b9 100644
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--- a/hw/s390x/s390-pci-bus.c
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+++ b/hw/s390x/s390-pci-bus.c
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@@ -160,20 +160,12 @@ static void s390_pci_shutdown_notifier(Notifier *n, void *opaque)
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pci_device_reset(pbdev->pdev);
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}
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-static void s390_pci_reset_cb(void *opaque)
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-{
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- S390PCIBusDevice *pbdev = opaque;
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-
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- pci_device_reset(pbdev->pdev);
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-}
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-
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static void s390_pci_perform_unplug(S390PCIBusDevice *pbdev)
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{
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HotplugHandler *hotplug_ctrl;
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if (pbdev->pft == ZPCI_PFT_ISM) {
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notifier_remove(&pbdev->shutdown_notifier);
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- qemu_unregister_reset(s390_pci_reset_cb, pbdev);
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}
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/* Unplug the PCI device */
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@@ -1137,7 +1129,6 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
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if (pbdev->pft == ZPCI_PFT_ISM) {
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pbdev->shutdown_notifier.notify = s390_pci_shutdown_notifier;
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qemu_register_shutdown_notifier(&pbdev->shutdown_notifier);
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- qemu_register_reset(s390_pci_reset_cb, pbdev);
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}
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} else {
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pbdev->fh |= FH_SHM_EMUL;
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@@ -1284,6 +1275,23 @@ static void s390_pci_enumerate_bridge(PCIBus *bus, PCIDevice *pdev,
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pci_default_write_config(pdev, PCI_SUBORDINATE_BUS, s->bus_no, 1);
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}
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+void s390_pci_ism_reset(void)
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+{
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+ S390pciState *s = s390_get_phb();
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+
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+ S390PCIBusDevice *pbdev, *next;
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+
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+ /* Trigger reset event for each passthrough ISM device currently in-use */
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+ QTAILQ_FOREACH_SAFE(pbdev, &s->zpci_devs, link, next) {
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+ if (pbdev->interp && pbdev->pft == ZPCI_PFT_ISM &&
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+ pbdev->fh & FH_MASK_ENABLE) {
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+ s390_pci_kvm_aif_disable(pbdev);
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+
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+ pci_device_reset(pbdev->pdev);
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+ }
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+ }
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+}
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+
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static void s390_pcihost_reset(DeviceState *dev)
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{
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S390pciState *s = S390_PCI_HOST_BRIDGE(dev);
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diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
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index 94434c3bb1..51e5b39888 100644
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--- a/hw/s390x/s390-virtio-ccw.c
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+++ b/hw/s390x/s390-virtio-ccw.c
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@@ -108,6 +108,14 @@ static void subsystem_reset(void)
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DeviceState *dev;
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int i;
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+ /*
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+ * ISM firmware is sensitive to unexpected changes to the IOMMU, which can
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+ * occur during reset of the vfio-pci device (unmap of entire aperture).
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+ * Ensure any passthrough ISM devices are reset now, while CPUs are paused
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+ * but before vfio-pci cleanup occurs.
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+ */
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+ s390_pci_ism_reset();
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+
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for (i = 0; i < ARRAY_SIZE(reset_dev_types); i++) {
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dev = DEVICE(object_resolve_path_type("", reset_dev_types[i], NULL));
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if (dev) {
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diff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h
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index 7a658f5e30..2bfad5563a 100644
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--- a/include/hw/s390x/s390-pci-bus.h
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+++ b/include/hw/s390x/s390-pci-bus.h
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@@ -401,5 +401,6 @@ S390PCIBusDevice *s390_pci_find_dev_by_target(S390pciState *s,
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const char *target);
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S390PCIBusDevice *s390_pci_find_next_avail_dev(S390pciState *s,
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S390PCIBusDevice *pbdev);
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+void s390_pci_ism_reset(void);
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#endif
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--
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2.41.0
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71
kvm-s390x-pci-refresh-fh-before-disabling-aif.patch
Normal file
71
kvm-s390x-pci-refresh-fh-before-disabling-aif.patch
Normal file
@ -0,0 +1,71 @@
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From fe70e87ef8d2f7e538867052e06012051919083f Mon Sep 17 00:00:00 2001
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|
From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
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|
Date: Tue, 23 Jan 2024 13:59:24 +0100
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Subject: [PATCH 2/3] s390x/pci: refresh fh before disabling aif
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cédric Le Goater <clg@redhat.com>
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RH-MergeRequest: 349: s390x: Fix reset ordering of passthrough ISM devices
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|
RH-Jira: RHEL-22411
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Commit: [2/3] 4a7d3fccdac508253bd7e5765973a08482022edb
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JIRA: https://issues.redhat.com/browse/RHEL-22411
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commit 30e35258e25c75c9d799c34fd89afcafffb37084
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|
Author: Matthew Rosato <mjrosato@linux.ibm.com>
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|
Date: Thu Jan 18 13:51:50 2024 -0500
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|
|
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|
s390x/pci: refresh fh before disabling aif
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|
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|
Typically we refresh the host fh during CLP enable, however it's possible
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|
that the device goes through multiple reset events before the guest
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performs another CLP enable. Let's handle this for now by refreshing the
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host handle from vfio before disabling aif.
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|
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|
Fixes: 03451953c7 ("s390x/pci: reset ISM passthrough devices on shutdown and system reset")
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|
Reported-by: Cédric Le Goater <clg@redhat.com>
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|
Reviewed-by: Eric Farman <farman@linux.ibm.com>
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Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
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Message-ID: <20240118185151.265329-3-mjrosato@linux.ibm.com>
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Reviewed-by: Cédric Le Goater <clg@redhat.com>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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---
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hw/s390x/s390-pci-kvm.c | 9 +++++++++
|
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|
1 file changed, 9 insertions(+)
|
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|
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diff --git a/hw/s390x/s390-pci-kvm.c b/hw/s390x/s390-pci-kvm.c
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index 1ee510436c..9eef4fc3ec 100644
|
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|
--- a/hw/s390x/s390-pci-kvm.c
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+++ b/hw/s390x/s390-pci-kvm.c
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|
@@ -18,6 +18,7 @@
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#include "hw/s390x/s390-pci-bus.h"
|
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|
#include "hw/s390x/s390-pci-kvm.h"
|
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#include "hw/s390x/s390-pci-inst.h"
|
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|
+#include "hw/s390x/s390-pci-vfio.h"
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#include "cpu_models.h"
|
||||||
|
|
||||||
|
bool s390_pci_kvm_interp_allowed(void)
|
||||||
|
@@ -64,6 +65,14 @@ int s390_pci_kvm_aif_disable(S390PCIBusDevice *pbdev)
|
||||||
|
return -EINVAL;
|
||||||
|
}
|
||||||
|
|
||||||
|
+ /*
|
||||||
|
+ * The device may have already been reset but we still want to relinquish
|
||||||
|
+ * the guest ISC, so always be sure to use an up-to-date host fh.
|
||||||
|
+ */
|
||||||
|
+ if (!s390_pci_get_host_fh(pbdev, &args.fh)) {
|
||||||
|
+ return -EPERM;
|
||||||
|
+ }
|
||||||
|
+
|
||||||
|
rc = kvm_vm_ioctl(kvm_state, KVM_S390_ZPCI_OP, &args);
|
||||||
|
if (rc == 0) {
|
||||||
|
pbdev->aif = false;
|
||||||
|
--
|
||||||
|
2.41.0
|
||||||
|
|
||||||
@ -83,7 +83,7 @@ Obsoletes: %1-rhev <= %{epoch}:%{version}-%{release}
|
|||||||
Summary: QEMU is a machine emulator and virtualizer
|
Summary: QEMU is a machine emulator and virtualizer
|
||||||
Name: qemu-kvm
|
Name: qemu-kvm
|
||||||
Version: 6.2.0
|
Version: 6.2.0
|
||||||
Release: 46%{?rcrel}%{?dist}
|
Release: 47%{?rcrel}%{?dist}
|
||||||
# Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
|
# Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
|
||||||
Epoch: 15
|
Epoch: 15
|
||||||
License: GPLv2 and GPLv2+ and CC-BY
|
License: GPLv2 and GPLv2+ and CC-BY
|
||||||
@ -827,6 +827,12 @@ Patch332: kvm-hw-s390x-pv-Restrict-Protected-Virtualization-to-sys.patch
|
|||||||
Patch333: kvm-hw-s390x-Move-KVM-specific-PV-from-hw-to-target-s390.patch
|
Patch333: kvm-hw-s390x-Move-KVM-specific-PV-from-hw-to-target-s390.patch
|
||||||
# For RHEL-18214 - [RHEL8][Secure-execution][s390x] The error message is not clear when boot up a SE guest with wrong encryption
|
# For RHEL-18214 - [RHEL8][Secure-execution][s390x] The error message is not clear when boot up a SE guest with wrong encryption
|
||||||
Patch334: kvm-target-s390x-kvm-pv-Provide-some-more-useful-informa.patch
|
Patch334: kvm-target-s390x-kvm-pv-Provide-some-more-useful-informa.patch
|
||||||
|
# For RHEL-22411 - [s390x] VM fails to start with ISM passed through
|
||||||
|
Patch335: kvm-s390x-pci-avoid-double-enable-disable-of-aif.patch
|
||||||
|
# For RHEL-22411 - [s390x] VM fails to start with ISM passed through
|
||||||
|
Patch336: kvm-s390x-pci-refresh-fh-before-disabling-aif.patch
|
||||||
|
# For RHEL-22411 - [s390x] VM fails to start with ISM passed through
|
||||||
|
Patch337: kvm-s390x-pci-drive-ISM-reset-from-subsystem-reset.patch
|
||||||
|
|
||||||
BuildRequires: wget
|
BuildRequires: wget
|
||||||
BuildRequires: rpm-build
|
BuildRequires: rpm-build
|
||||||
@ -1996,6 +2002,13 @@ sh %{_sysconfdir}/sysconfig/modules/kvm.modules &> /dev/null || :
|
|||||||
|
|
||||||
|
|
||||||
%changelog
|
%changelog
|
||||||
|
* Sat Feb 03 2024 Jon Maloy <jmaloy@redhat.com> - 6.2.0-47
|
||||||
|
- kvm-s390x-pci-avoid-double-enable-disable-of-aif.patch [RHEL-22411]
|
||||||
|
- kvm-s390x-pci-refresh-fh-before-disabling-aif.patch [RHEL-22411]
|
||||||
|
- kvm-s390x-pci-drive-ISM-reset-from-subsystem-reset.patch [RHEL-22411]
|
||||||
|
- Resolves: RHEL-22411
|
||||||
|
([s390x] VM fails to start with ISM passed through)
|
||||||
|
|
||||||
* Wed Jan 17 2024 Jon Maloy <jmaloy@redhat.com> - 6.2.0-46
|
* Wed Jan 17 2024 Jon Maloy <jmaloy@redhat.com> - 6.2.0-46
|
||||||
- kvm-MAINTAINERS-split-out-s390x-sections.patch [RHEL-18214]
|
- kvm-MAINTAINERS-split-out-s390x-sections.patch [RHEL-18214]
|
||||||
- kvm-s390x-pv-remove-semicolon-from-macro-definition.patch [RHEL-18214]
|
- kvm-s390x-pv-remove-semicolon-from-macro-definition.patch [RHEL-18214]
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user