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* Mon Jan 30 2023 Miroslav Rezanina <mrezanin@redhat.com> - 7.2.0-6 

- kvm-virtio_net-Modify-virtio_net_get_config-to-early-ret.patch [bz#2141088]
- kvm-virtio_net-copy-VIRTIO_NET_S_ANNOUNCE-if-device-mode.patch [bz#2141088]
- kvm-vdpa-handle-VIRTIO_NET_CTRL_ANNOUNCE-in-vhost_vdpa_n.patch [bz#2141088]
- kvm-vdpa-do-not-handle-VIRTIO_NET_F_GUEST_ANNOUNCE-in-vh.patch [bz#2141088]
- kvm-s390x-pv-Implement-a-CGS-check-helper.patch [bz#2122523]
- kvm-s390x-pci-coalesce-unmap-operations.patch [bz#2163701]
- kvm-s390x-pci-shrink-DMA-aperture-to-be-bound-by-vfio-DM.patch [bz#2163701]
- kvm-s390x-pci-reset-ISM-passthrough-devices-on-shutdown-.patch [bz#2163701]
- kvm-qga-linux-add-usb-support-to-guest-get-fsinfo.patch [bz#2149191]
- Resolves: bz#2141088
  (vDPA SVQ guest announce support)
- Resolves: bz#2122523
  (Secure guest can't boot with maximal number of vcpus (248))
- Resolves: bz#2163701
  ([s390x] VM fails to start with ISM passed through)
- Resolves: bz#2149191
  ([RFE][guest-agent] - USB bus type support)
This commit is contained in:
Miroslav Rezanina 2023-01-30 03:00:34 -05:00
parent 2fe1fc7b2d
commit dd0eece2ef
10 changed files with 782 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
kvm-qga-linux-add-usb-support-to-guest-get-fsinfo.patch Normal file
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@ -0,0 +1,49 @@
From 48f45171b89b8ed24f2b2484d63b00ea7818b5c3 Mon Sep 17 00:00:00 2001
From: Kfir Manor <kfir@daynix.com>
Date: Sun, 22 Jan 2023 17:33:07 +0200
Subject: [PATCH 9/9] qga/linux: add usb support to guest-get-fsinfo
RH-Author: Kostiantyn Kostiuk <kkostiuk@redhat.com>
RH-MergeRequest: 140: qga/linux: add usb support to guest-get-fsinfo
RH-Bugzilla: 2149191
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: yvugenfi <None>
RH-Commit: [1/1] bae929a2d0d0ad20e7308ede69c26499fc2119c7 (kostyanf14/redhat_centos-stream_src_qemu-kvm)
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2149191
Upstream patch: https://patchew.org/QEMU/20230122153307.1050593-1-kfir@daynix.com/
Signed-off-by: Kfir Manor <kfir@daynix.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
---
qga/commands-posix.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 32493d6383..f1b2b87c13 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -877,7 +877,9 @@ static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
g_str_equal(driver, "sym53c8xx") ||
g_str_equal(driver, "virtio-pci") ||
g_str_equal(driver, "ahci") ||
- g_str_equal(driver, "nvme"))) {
+ g_str_equal(driver, "nvme") ||
+ g_str_equal(driver, "xhci_hcd") ||
+ g_str_equal(driver, "ehci-pci"))) {
break;
}
@@ -974,6 +976,8 @@ static bool build_guest_fsinfo_for_pci_dev(char const *syspath,
}
} else if (strcmp(driver, "nvme") == 0) {
disk->bus_type = GUEST_DISK_BUS_TYPE_NVME;
+ } else if (strcmp(driver, "ehci-pci") == 0 || strcmp(driver, "xhci_hcd") == 0) {
+ disk->bus_type = GUEST_DISK_BUS_TYPE_USB;
} else {
g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath);
goto cleanup;
--
2.31.1

125
kvm-s390x-pci-coalesce-unmap-operations.patch Normal file
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@ -0,0 +1,125 @@
From ed90f91b61844abd2dff2eb970f721a6cf072235 Mon Sep 17 00:00:00 2001
From: Matthew Rosato <mjrosato@linux.ibm.com>
Date: Fri, 28 Oct 2022 15:47:57 -0400
Subject: [PATCH 6/9] s390x/pci: coalesce unmap operations
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Cédric Le Goater <clg@redhat.com>
RH-MergeRequest: 141: s390x/pci: reset ISM passthrough devices on shutdown and system reset
RH-Bugzilla: 2163701
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Commit: [1/3] 80c3a2c1d720057ae2a80b338ea06c9c6c804532 (clegoate/qemu-kvm-c9s)
Currently, each unmapped page is handled as an individual iommu
region notification. Attempt to group contiguous unmap operations
into fewer notifications to reduce overhead.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20221028194758.204007-3-mjrosato@linux.ibm.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit ef536007c3301bbd6a787e4c2210ea289adaa6f0)
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
hw/s390x/s390-pci-inst.c | 51 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c
index 7cc4bcf850..66e764f901 100644
--- a/hw/s390x/s390-pci-inst.c
+++ b/hw/s390x/s390-pci-inst.c
@@ -640,6 +640,8 @@ static uint32_t s390_pci_update_iotlb(S390PCIIOMMU *iommu,
}
g_hash_table_remove(iommu->iotlb, &entry->iova);
inc_dma_avail(iommu);
+ /* Don't notify the iommu yet, maybe we can bundle contiguous unmaps */
+ goto out;
} else {
if (cache) {
if (cache->perm == entry->perm &&
@@ -663,15 +665,44 @@ static uint32_t s390_pci_update_iotlb(S390PCIIOMMU *iommu,
dec_dma_avail(iommu);
}
+ /*
+ * All associated iotlb entries have already been cleared, trigger the
+ * unmaps.
+ */
memory_region_notify_iommu(&iommu->iommu_mr, 0, event);
out:
return iommu->dma_limit ? iommu->dma_limit->avail : 1;
}
+static void s390_pci_batch_unmap(S390PCIIOMMU *iommu, uint64_t iova,
+ uint64_t len)
+{
+ uint64_t remain = len, start = iova, end = start + len - 1, mask, size;
+ IOMMUTLBEvent event = {
+ .type = IOMMU_NOTIFIER_UNMAP,
+ .entry = {
+ .target_as = &address_space_memory,
+ .translated_addr = 0,
+ .perm = IOMMU_NONE,
+ },
+ };
+
+ while (remain >= TARGET_PAGE_SIZE) {
+ mask = dma_aligned_pow2_mask(start, end, 64);
+ size = mask + 1;
+ event.entry.iova = start;
+ event.entry.addr_mask = mask;
+ memory_region_notify_iommu(&iommu->iommu_mr, 0, event);
+ start += size;
+ remain -= size;
+ }
+}
+
int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
{
CPUS390XState *env = &cpu->env;
+ uint64_t iova, coalesce = 0;
uint32_t fh;
uint16_t error = 0;
S390PCIBusDevice *pbdev;
@@ -742,6 +773,21 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
break;
}
+ /*
+ * If this is an unmap of a PTE, let's try to coalesce multiple unmaps
+ * into as few notifier events as possible.
+ */
+ if (entry.perm == IOMMU_NONE && entry.len == TARGET_PAGE_SIZE) {
+ if (coalesce == 0) {
+ iova = entry.iova;
+ }
+ coalesce += entry.len;
+ } else if (coalesce > 0) {
+ /* Unleash the coalesced unmap before processing a new map */
+ s390_pci_batch_unmap(iommu, iova, coalesce);
+ coalesce = 0;
+ }
+
start += entry.len;
while (entry.iova < start && entry.iova < end) {
if (dma_avail > 0 || entry.perm == IOMMU_NONE) {
@@ -759,6 +805,11 @@ int rpcit_service_call(S390CPU *cpu, uint8_t r1, uint8_t r2, uintptr_t ra)
}
}
}
+ if (coalesce) {
+ /* Unleash the coalesced unmap before finishing rpcit */
+ s390_pci_batch_unmap(iommu, iova, coalesce);
+ coalesce = 0;
+ }
if (again && dma_avail > 0)
goto retry;
err:
--
2.31.1

147
kvm-s390x-pci-reset-ISM-passthrough-devices-on-shutdown-.patch Normal file
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@ -0,0 +1,147 @@
From 1ed1f8fc20a4883bc0bc1f58d299b0278abc5442 Mon Sep 17 00:00:00 2001
From: Matthew Rosato <mjrosato@linux.ibm.com>
Date: Fri, 9 Dec 2022 14:57:00 -0500
Subject: [PATCH 8/9] s390x/pci: reset ISM passthrough devices on shutdown and
system reset
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Cédric Le Goater <clg@redhat.com>
RH-MergeRequest: 141: s390x/pci: reset ISM passthrough devices on shutdown and system reset
RH-Bugzilla: 2163701
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Commit: [3/3] c531352b9d57f51ba938d4c46ee19a5706ade697 (clegoate/qemu-kvm-c9s)
ISM device firmware stores unique state information that can
can cause a wholesale unmap of the associated IOMMU (e.g. when
we get a termination signal for QEMU) to trigger firmware errors
because firmware believes we are attempting to invalidate entries
that are still in-use by the guest OS (when in fact that guest is
in the process of being terminated or rebooted).
To alleviate this, register both a shutdown notifier (for unexpected
termination cases e.g. virsh destroy) as well as a reset callback
(for cases like guest OS reboot). For each of these scenarios, trigger
PCI device reset; this is enough to indicate to firmware that the IOMMU
is no longer in-use by the guest OS, making it safe to invalidate any
associated IOMMU entries.
Fixes: 15d0e7942d3b ("s390x/pci: don't fence interpreted devices without MSI-X")
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20221209195700.263824-1-mjrosato@linux.ibm.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
[thuth: Adjusted the hunk in s390-pci-vfio.c due to different context]
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 03451953c79e6b31f7860ee0c35b28e181d573c1)
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
hw/s390x/s390-pci-bus.c | 28 ++++++++++++++++++++++++++++
hw/s390x/s390-pci-vfio.c | 2 ++
include/hw/s390x/s390-pci-bus.h | 5 +++++
3 files changed, 35 insertions(+)
diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 977e7daa15..02751f3597 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -24,6 +24,8 @@
#include "hw/pci/msi.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
+#include "sysemu/reset.h"
+#include "sysemu/runstate.h"
#ifndef DEBUG_S390PCI_BUS
#define DEBUG_S390PCI_BUS 0
@@ -150,10 +152,30 @@ out:
psccb->header.response_code = cpu_to_be16(rc);
}
+static void s390_pci_shutdown_notifier(Notifier *n, void *opaque)
+{
+ S390PCIBusDevice *pbdev = container_of(n, S390PCIBusDevice,
+ shutdown_notifier);
+
+ pci_device_reset(pbdev->pdev);
+}
+
+static void s390_pci_reset_cb(void *opaque)
+{
+ S390PCIBusDevice *pbdev = opaque;
+
+ pci_device_reset(pbdev->pdev);
+}
+
static void s390_pci_perform_unplug(S390PCIBusDevice *pbdev)
{
HotplugHandler *hotplug_ctrl;
+ if (pbdev->pft == ZPCI_PFT_ISM) {
+ notifier_remove(&pbdev->shutdown_notifier);
+ qemu_unregister_reset(s390_pci_reset_cb, pbdev);
+ }
+
/* Unplug the PCI device */
if (pbdev->pdev) {
DeviceState *pdev = DEVICE(pbdev->pdev);
@@ -1111,6 +1133,12 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
pbdev->fh |= FH_SHM_VFIO;
pbdev->forwarding_assist = false;
}
+ /* Register shutdown notifier and reset callback for ISM devices */
+ if (pbdev->pft == ZPCI_PFT_ISM) {
+ pbdev->shutdown_notifier.notify = s390_pci_shutdown_notifier;
+ qemu_register_shutdown_notifier(&pbdev->shutdown_notifier);
+ qemu_register_reset(s390_pci_reset_cb, pbdev);
+ }
} else {
pbdev->fh |= FH_SHM_EMUL;
/* Always intercept emulated devices */
diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c
index f7bf36cec8..f51190d466 100644
--- a/hw/s390x/s390-pci-vfio.c
+++ b/hw/s390x/s390-pci-vfio.c
@@ -124,6 +124,8 @@ static void s390_pci_read_base(S390PCIBusDevice *pbdev,
/* The following values remain 0 until we support other FMB formats */
pbdev->zpci_fn.fmbl = 0;
pbdev->zpci_fn.pft = 0;
+ /* Store function type separately for type-specific behavior */
+ pbdev->pft = cap->pft;
/*
* If appropriate, reduce the size of the supported DMA aperture reported
diff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h
index 1c46e3a269..e0a9f9385b 100644
--- a/include/hw/s390x/s390-pci-bus.h
+++ b/include/hw/s390x/s390-pci-bus.h
@@ -39,6 +39,9 @@
#define UID_CHECKING_ENABLED 0x01
#define ZPCI_DTSM 0x40
+/* zPCI Function Types */
+#define ZPCI_PFT_ISM 5
+
OBJECT_DECLARE_SIMPLE_TYPE(S390pciState, S390_PCI_HOST_BRIDGE)
OBJECT_DECLARE_SIMPLE_TYPE(S390PCIBus, S390_PCI_BUS)
OBJECT_DECLARE_SIMPLE_TYPE(S390PCIBusDevice, S390_PCI_DEVICE)
@@ -344,6 +347,7 @@ struct S390PCIBusDevice {
uint16_t noi;
uint16_t maxstbl;
uint8_t sum;
+ uint8_t pft;
S390PCIGroup *pci_group;
ClpRspQueryPci zpci_fn;
S390MsixInfo msix;
@@ -352,6 +356,7 @@ struct S390PCIBusDevice {
MemoryRegion msix_notify_mr;
IndAddr *summary_ind;
IndAddr *indicator;
+ Notifier shutdown_notifier;
bool pci_unplug_request_processed;
bool unplug_requested;
bool interp;
--
2.31.1

91
kvm-s390x-pci-shrink-DMA-aperture-to-be-bound-by-vfio-DM.patch Normal file
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@ -0,0 +1,91 @@
From ee69c8c57fe62fc200f749c4ce3927c88803644d Mon Sep 17 00:00:00 2001
From: Matthew Rosato <mjrosato@linux.ibm.com>
Date: Fri, 28 Oct 2022 15:47:58 -0400
Subject: [PATCH 7/9] s390x/pci: shrink DMA aperture to be bound by vfio DMA
limit
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Cédric Le Goater <clg@redhat.com>
RH-MergeRequest: 141: s390x/pci: reset ISM passthrough devices on shutdown and system reset
RH-Bugzilla: 2163701
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Commit: [2/3] 0956bbb4773dd0085f6aed59d6284c704b4fed3b (clegoate/qemu-kvm-c9s)
Currently, s390x-pci performs accounting against the vfio DMA
limit and triggers the guest to clean up mappings when the limit
is reached. Let's go a step further and also limit the size of
the supported DMA aperture reported to the guest based upon the
initial vfio DMA limit reported for the container (if less than
than the size reported by the firmware/host zPCI layer). This
avoids processing sections of the guest DMA table during global
refresh that, for common use cases, will never be used anway, and
makes exhausting the vfio DMA limit due to mismatch between guest
aperture size and host limit far less likely and more indicitive
of an error.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20221028194758.204007-4-mjrosato@linux.ibm.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit df202e3ff3fccb49868e08f20d0bda86cb953fbe)
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
hw/s390x/s390-pci-vfio.c | 11 +++++++++++
include/hw/s390x/s390-pci-bus.h | 1 +
2 files changed, 12 insertions(+)
diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c
index 5f0adb0b4a..f7bf36cec8 100644
--- a/hw/s390x/s390-pci-vfio.c
+++ b/hw/s390x/s390-pci-vfio.c
@@ -84,6 +84,7 @@ S390PCIDMACount *s390_pci_start_dma_count(S390pciState *s,
cnt->users = 1;
cnt->avail = avail;
QTAILQ_INSERT_TAIL(&s->zpci_dma_limit, cnt, link);
+ pbdev->iommu->max_dma_limit = avail;
return cnt;
}
@@ -103,6 +104,7 @@ static void s390_pci_read_base(S390PCIBusDevice *pbdev,
struct vfio_info_cap_header *hdr;
struct vfio_device_info_cap_zpci_base *cap;
VFIOPCIDevice *vpci = container_of(pbdev->pdev, VFIOPCIDevice, pdev);
+ uint64_t vfio_size;
hdr = vfio_get_device_info_cap(info, VFIO_DEVICE_INFO_CAP_ZPCI_BASE);
@@ -122,6 +124,15 @@ static void s390_pci_read_base(S390PCIBusDevice *pbdev,
/* The following values remain 0 until we support other FMB formats */
pbdev->zpci_fn.fmbl = 0;
pbdev->zpci_fn.pft = 0;
+
+ /*
+ * If appropriate, reduce the size of the supported DMA aperture reported
+ * to the guest based upon the vfio DMA limit.
+ */
+ vfio_size = pbdev->iommu->max_dma_limit << TARGET_PAGE_BITS;
+ if (vfio_size < (cap->end_dma - cap->start_dma + 1)) {
+ pbdev->zpci_fn.edma = cap->start_dma + vfio_size - 1;
+ }
}
static bool get_host_fh(S390PCIBusDevice *pbdev, struct vfio_device_info *info,
diff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h
index 0605fcea24..1c46e3a269 100644
--- a/include/hw/s390x/s390-pci-bus.h
+++ b/include/hw/s390x/s390-pci-bus.h
@@ -278,6 +278,7 @@ struct S390PCIIOMMU {
uint64_t g_iota;
uint64_t pba;
uint64_t pal;
+ uint64_t max_dma_limit;
GHashTable *iotlb;
S390PCIDMACount *dma_limit;
};
--
2.31.1

109
kvm-s390x-pv-Implement-a-CGS-check-helper.patch Normal file
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@ -0,0 +1,109 @@
From 9452246e59a5f16f44fdf9a7d514b947faf1d5fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
Date: Mon, 16 Jan 2023 18:46:05 +0100
Subject: [PATCH 5/9] s390x/pv: Implement a CGS check helper
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Cédric Le Goater <clg@redhat.com>
RH-MergeRequest: 139: s390x/pv: Implement a CGS check helper
RH-Bugzilla: 2122523
RH-Acked-by: Thomas Huth <thuth@redhat.com>
RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
RH-Acked-by: David Hildenbrand <david@redhat.com>
RH-Commit: [1/1] 8551ce772b10de653b4e1c8be60aae60ec98b421 (clegoate/qemu-kvm-c9s)
When a protected VM is started with the maximum number of CPUs (248),
the service call providing information on the CPUs requires more
buffer space than allocated and QEMU disgracefully aborts :
LOADPARM=[........]
Using virtio-blk.
Using SCSI scheme.
...................................................................................
qemu-system-s390x: KVM_S390_MEM_OP failed: Argument list too long
When protected virtualization is initialized, compute the maximum
number of vCPUs supported by the machine and return useful information
to the user before the machine starts in case of error.
Suggested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20230116174607.2459498-2-clg@kaod.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit 75d7150c636569f6687f7e70a33be893be43eb5f)
Signed-off-by: Cédric Le Goater <clg@redhat.com>
---
hw/s390x/pv.c | 40 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/hw/s390x/pv.c b/hw/s390x/pv.c
index 8dfe92d8df..8a1c71436b 100644
--- a/hw/s390x/pv.c
+++ b/hw/s390x/pv.c
@@ -20,6 +20,7 @@
#include "exec/confidential-guest-support.h"
#include "hw/s390x/ipl.h"
#include "hw/s390x/pv.h"
+#include "hw/s390x/sclp.h"
#include "target/s390x/kvm/kvm_s390x.h"
static bool info_valid;
@@ -249,6 +250,41 @@ struct S390PVGuestClass {
ConfidentialGuestSupportClass parent_class;
};
+/*
+ * If protected virtualization is enabled, the amount of data that the
+ * Read SCP Info Service Call can use is limited to one page. The
+ * available space also depends on the Extended-Length SCCB (ELS)
+ * feature which can take more buffer space to store feature
+ * information. This impacts the maximum number of CPUs supported in
+ * the machine.
+ */
+static uint32_t s390_pv_get_max_cpus(void)
+{
+ int offset_cpu = s390_has_feat(S390_FEAT_EXTENDED_LENGTH_SCCB) ?
+ offsetof(ReadInfo, entries) : SCLP_READ_SCP_INFO_FIXED_CPU_OFFSET;
+
+ return (TARGET_PAGE_SIZE - offset_cpu) / sizeof(CPUEntry);
+}
+
+static bool s390_pv_check_cpus(Error **errp)
+{
+ MachineState *ms = MACHINE(qdev_get_machine());
+ uint32_t pv_max_cpus = s390_pv_get_max_cpus();
+
+ if (ms->smp.max_cpus > pv_max_cpus) {
+ error_setg(errp, "Protected VMs support a maximum of %d CPUs",
+ pv_max_cpus);
+ return false;
+ }
+
+ return true;
+}
+
+static bool s390_pv_guest_check(ConfidentialGuestSupport *cgs, Error **errp)
+{
+ return s390_pv_check_cpus(errp);
+}
+
int s390_pv_kvm_init(ConfidentialGuestSupport *cgs, Error **errp)
{
if (!object_dynamic_cast(OBJECT(cgs), TYPE_S390_PV_GUEST)) {
@@ -261,6 +297,10 @@ int s390_pv_kvm_init(ConfidentialGuestSupport *cgs, Error **errp)
return -1;
}
+ if (!s390_pv_guest_check(cgs, errp)) {
+ return -1;
+ }
+
cgs->ready = true;
return 0;
--
2.31.1

44
kvm-vdpa-do-not-handle-VIRTIO_NET_F_GUEST_ANNOUNCE-in-vh.patch Normal file
View File

@ -0,0 +1,44 @@
From fbb177ad84d562a20e51e71c73257d2ef85be2d9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
Date: Wed, 21 Dec 2022 12:50:15 +0100
Subject: [PATCH 4/9] vdpa: do not handle VIRTIO_NET_F_GUEST_ANNOUNCE in
vhost-vdpa
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Eugenio Pérez <eperezma@redhat.com>
RH-MergeRequest: 137: vDPA net SVQ guest announce support
RH-Bugzilla: 2141088
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Cindy Lu <lulu@redhat.com>
RH-Acked-by: Jason Wang <jasowang@redhat.com>
RH-Commit: [4/4] b3960a8b3e4ca569b1b1e6ceccf2051d8c4b1079 (eperezmartin/qemu-kvm)
So qemu emulates it even in case the device does not support it.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221221115015.1400889-5-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit 980003debddd18306ea2e1364b96598383c0e257)
---
net/vhost-vdpa.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 52ef9cb3a2..b06540ac89 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -72,7 +72,6 @@ const int vdpa_feature_bits[] = {
VIRTIO_F_RING_RESET,
VIRTIO_NET_F_RSS,
VIRTIO_NET_F_HASH_REPORT,
- VIRTIO_NET_F_GUEST_ANNOUNCE,
VIRTIO_NET_F_STATUS,
VHOST_INVALID_FEATURE_BIT
};
--
2.31.1

59
kvm-vdpa-handle-VIRTIO_NET_CTRL_ANNOUNCE-in-vhost_vdpa_n.patch Normal file
View File

@ -0,0 +1,59 @@
From b71724e94c94acd6e09fed2b47be2901799c2353 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
Date: Wed, 21 Dec 2022 12:50:14 +0100
Subject: [PATCH 3/9] vdpa: handle VIRTIO_NET_CTRL_ANNOUNCE in
vhost_vdpa_net_handle_ctrl_avail
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Eugenio Pérez <eperezma@redhat.com>
RH-MergeRequest: 137: vDPA net SVQ guest announce support
RH-Bugzilla: 2141088
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Cindy Lu <lulu@redhat.com>
RH-Acked-by: Jason Wang <jasowang@redhat.com>
RH-Commit: [3/4] c4ef5b62a5d41911565b8960a88bb48d746ff6c7 (eperezmartin/qemu-kvm)
Since this capability is emulated by qemu shadowed CVQ cannot forward it
to the device. Process all that command within qemu.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20221221115015.1400889-4-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 3f9a3eeb7ca6acd899e2205a9118928b4cd94e47)
---
net/vhost-vdpa.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 2b4b85d8f8..52ef9cb3a2 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -489,9 +489,18 @@ static int vhost_vdpa_net_handle_ctrl_avail(VhostShadowVirtqueue *svq,
out.iov_len = iov_to_buf(elem->out_sg, elem->out_num, 0,
s->cvq_cmd_out_buffer,
vhost_vdpa_net_cvq_cmd_len());
- dev_written = vhost_vdpa_net_cvq_add(s, out.iov_len, sizeof(status));
- if (unlikely(dev_written < 0)) {
- goto out;
+ if (*(uint8_t *)s->cvq_cmd_out_buffer == VIRTIO_NET_CTRL_ANNOUNCE) {
+ /*
+ * Guest announce capability is emulated by qemu, so don't forward to
+ * the device.
+ */
+ dev_written = sizeof(status);
+ *s->status = VIRTIO_NET_OK;
+ } else {
+ dev_written = vhost_vdpa_net_cvq_add(s, out.iov_len, sizeof(status));
+ if (unlikely(dev_written < 0)) {
+ goto out;
+ }
}
if (unlikely(dev_written < sizeof(status))) {
--
2.31.1

74
kvm-virtio_net-Modify-virtio_net_get_config-to-early-ret.patch Normal file
View File

@ -0,0 +1,74 @@
From 3f55d12df35552ae948587a62d6f9015664adc13 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
Date: Wed, 21 Dec 2022 12:50:12 +0100
Subject: [PATCH 1/9] virtio_net: Modify virtio_net_get_config to early return
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Eugenio Pérez <eperezma@redhat.com>
RH-MergeRequest: 137: vDPA net SVQ guest announce support
RH-Bugzilla: 2141088
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Cindy Lu <lulu@redhat.com>
RH-Acked-by: Jason Wang <jasowang@redhat.com>
RH-Commit: [1/4] 4f5e79afd54e157f32e6fff56ae33e2b71492525 (eperezmartin/qemu-kvm)
Next patches introduce more code on vhost-vdpa branch, with already have
too much indentation.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221221115015.1400889-2-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
(cherry picked from commit ebc141a62508dc91901373c1a19fe7e2cf560dfb)
---
hw/net/virtio-net.c | 28 +++++++++++++++-------------
1 file changed, 15 insertions(+), 13 deletions(-)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index ec974f7a76..5935e55653 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -168,20 +168,22 @@ static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config)
if (nc->peer && nc->peer->info->type == NET_CLIENT_DRIVER_VHOST_VDPA) {
ret = vhost_net_get_config(get_vhost_net(nc->peer), (uint8_t *)&netcfg,
n->config_size);
- if (ret != -1) {
- /*
- * Some NIC/kernel combinations present 0 as the mac address. As
- * that is not a legal address, try to proceed with the
- * address from the QEMU command line in the hope that the
- * address has been configured correctly elsewhere - just not
- * reported by the device.
- */
- if (memcmp(&netcfg.mac, &zero, sizeof(zero)) == 0) {
- info_report("Zero hardware mac address detected. Ignoring.");
- memcpy(netcfg.mac, n->mac, ETH_ALEN);
- }
- memcpy(config, &netcfg, n->config_size);
+ if (ret == -1) {
+ return;
}
+
+ /*
+ * Some NIC/kernel combinations present 0 as the mac address. As that
+ * is not a legal address, try to proceed with the address from the
+ * QEMU command line in the hope that the address has been configured
+ * correctly elsewhere - just not reported by the device.
+ */
+ if (memcmp(&netcfg.mac, &zero, sizeof(zero)) == 0) {
+ info_report("Zero hardware mac address detected. Ignoring.");
+ memcpy(netcfg.mac, n->mac, ETH_ALEN);
+ }
+
+ memcpy(config, &netcfg, n->config_size);
}
}
--
2.31.1

46
kvm-virtio_net-copy-VIRTIO_NET_S_ANNOUNCE-if-device-mode.patch Normal file
View File

@ -0,0 +1,46 @@
From b3d728b53abaae0c9884dfb5e9c216b1088196e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
Date: Wed, 21 Dec 2022 12:50:13 +0100
Subject: [PATCH 2/9] virtio_net: copy VIRTIO_NET_S_ANNOUNCE if device model
has it
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Eugenio Pérez <eperezma@redhat.com>
RH-MergeRequest: 137: vDPA net SVQ guest announce support
RH-Bugzilla: 2141088
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Cindy Lu <lulu@redhat.com>
RH-Acked-by: Jason Wang <jasowang@redhat.com>
RH-Commit: [2/4] fb04186829eb93bab3c9ececf90fa5b035ffa2ec (eperezmartin/qemu-kvm)
Status part of the emulated feature. It will follow device model, so we
must copy it as long as NIC device model has it set.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20221221115015.1400889-3-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
(cherry picked from commit 4f93aafc8f9d731c6588f5dc5594c6a1dd1fbe66)
---
hw/net/virtio-net.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index 5935e55653..948bcf33cf 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -183,6 +183,8 @@ static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config)
memcpy(netcfg.mac, n->mac, ETH_ALEN);
}
+ netcfg.status |= virtio_tswap16(vdev,
+ n->status & VIRTIO_NET_S_ANNOUNCE);
memcpy(config, &netcfg, n->config_size);
}
}
--
2.31.1

39
qemu-kvm.spec
View File

@ -148,7 +148,7 @@ Obsoletes: %{name}-block-ssh <= %{epoch}:%{version} \
Summary: QEMU is a machine emulator and virtualizer
Name: qemu-kvm
Version: 7.2.0
Release: 5%{?rcrel}%{?dist}%{?cc_suffix}
Release: 6%{?rcrel}%{?dist}%{?cc_suffix}
# Epoch because we pushed a qemu-1.0 package. AIUI this can't ever be dropped
# Epoch 15 used for RHEL 8
# Epoch 17 used for RHEL 9 (due to release versioning offset in RHEL 8.5)
@ -272,6 +272,24 @@ Patch61: kvm-accel-introduce-accelerator-blocker-API.patch
Patch62: kvm-KVM-keep-track-of-running-ioctls.patch
# For bz#1979276 - SVM: non atomic memslot updates cause boot failure with seabios and cpu-pm=on
Patch63: kvm-kvm-Atomic-memslot-updates.patch
# For bz#2141088 - vDPA SVQ guest announce support
Patch64: kvm-virtio_net-Modify-virtio_net_get_config-to-early-ret.patch
# For bz#2141088 - vDPA SVQ guest announce support
Patch65: kvm-virtio_net-copy-VIRTIO_NET_S_ANNOUNCE-if-device-mode.patch
# For bz#2141088 - vDPA SVQ guest announce support
Patch66: kvm-vdpa-handle-VIRTIO_NET_CTRL_ANNOUNCE-in-vhost_vdpa_n.patch
# For bz#2141088 - vDPA SVQ guest announce support
Patch67: kvm-vdpa-do-not-handle-VIRTIO_NET_F_GUEST_ANNOUNCE-in-vh.patch
# For bz#2122523 - Secure guest can't boot with maximal number of vcpus (248)
Patch68: kvm-s390x-pv-Implement-a-CGS-check-helper.patch
# For bz#2163701 - [s390x] VM fails to start with ISM passed through
Patch69: kvm-s390x-pci-coalesce-unmap-operations.patch
# For bz#2163701 - [s390x] VM fails to start with ISM passed through
Patch70: kvm-s390x-pci-shrink-DMA-aperture-to-be-bound-by-vfio-DM.patch
# For bz#2163701 - [s390x] VM fails to start with ISM passed through
Patch71: kvm-s390x-pci-reset-ISM-passthrough-devices-on-shutdown-.patch
# For bz#2149191 - [RFE][guest-agent] - USB bus type support
Patch72: kvm-qga-linux-add-usb-support-to-guest-get-fsinfo.patch
%if %{have_clang}
BuildRequires: clang
@ -1300,6 +1318,25 @@ useradd -r -u 107 -g qemu -G kvm -d / -s /sbin/nologin \
%endif
%changelog
* Mon Jan 30 2023 Miroslav Rezanina <mrezanin@redhat.com> - 7.2.0-6
- kvm-virtio_net-Modify-virtio_net_get_config-to-early-ret.patch [bz#2141088]
- kvm-virtio_net-copy-VIRTIO_NET_S_ANNOUNCE-if-device-mode.patch [bz#2141088]
- kvm-vdpa-handle-VIRTIO_NET_CTRL_ANNOUNCE-in-vhost_vdpa_n.patch [bz#2141088]
- kvm-vdpa-do-not-handle-VIRTIO_NET_F_GUEST_ANNOUNCE-in-vh.patch [bz#2141088]
- kvm-s390x-pv-Implement-a-CGS-check-helper.patch [bz#2122523]
- kvm-s390x-pci-coalesce-unmap-operations.patch [bz#2163701]
- kvm-s390x-pci-shrink-DMA-aperture-to-be-bound-by-vfio-DM.patch [bz#2163701]
- kvm-s390x-pci-reset-ISM-passthrough-devices-on-shutdown-.patch [bz#2163701]
- kvm-qga-linux-add-usb-support-to-guest-get-fsinfo.patch [bz#2149191]
- Resolves: bz#2141088
(vDPA SVQ guest announce support)
- Resolves: bz#2122523
(Secure guest can't boot with maximal number of vcpus (248))
- Resolves: bz#2163701
([s390x] VM fails to start with ISM passed through)
- Resolves: bz#2149191
([RFE][guest-agent] - USB bus type support)
* Tue Jan 17 2023 Miroslav Rezanina <mrezanin@redhat.com> - 7.2.0-5
- kvm-virtio-introduce-macro-VIRTIO_CONFIG_IRQ_IDX.patch [bz#1905805]
- kvm-virtio-pci-decouple-notifier-from-interrupt-process.patch [bz#1905805]