Let the callers do the reporting. This will be useful in
vfio_iommu_map_dirty_notify().
Cc: "Michael S. Tsirkin" <m...@redhat.com>
Cc: Paolo Bonzini <pbonz...@redhat.com>
Cc: David Hildenbrand <da...@redhat.com>
Signed-off-by: Cédric Le Goater <c...@redhat.com>
---
include/exec/memory.h | 15 ++++++++++++++-
hw/vfio/common.c | 13 +++++++++----
hw/virtio/vhost-vdpa.c | 5 ++++-
system/memory.c | 10 +++++-----
4 files changed, 32 insertions(+), 11 deletions(-)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index
c129ee6db7162504bd72d4cfc69b5affb2cd87e8..14b6c99765428ec399e4a9ed54ecc3e2f691d29c
100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -771,9 +771,22 @@ void
ram_discard_manager_register_listener(RamDiscardManager *rdm,
void ram_discard_manager_unregister_listener(RamDiscardManager *rdm,
RamDiscardListener *rdl);
+/**
+ * memory_get_xlat_addr: Extract addresses from a TLB entry
+ *
+ * @iotlb: pointer to an #IOMMUTLBEntry
+ * @vaddr: virtual addressf
+ * @ram_addr: RAM address
+ * @read_only: indicates if writes are allowed
+ * @mr_has_discard_manager: indicates memory is controlled by a
+ * RamDiscardManager
+ * @errp: pointer to Error*, to store an error if it happens.
+ *
+ * Return: true on success, else false setting @errp with error.
+ */
bool memory_get_xlat_addr(IOMMUTLBEntry *iotlb, void **vaddr,
ram_addr_t *ram_addr, bool *read_only,
- bool *mr_has_discard_manager);
+ bool *mr_has_discard_manager, Error **errp);
typedef struct CoalescedMemoryRange CoalescedMemoryRange;
typedef struct MemoryRegionIoeventfd MemoryRegionIoeventfd;
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index
6820d2efe4923d5043da7eb8deecb6ff20e1fd16..496e5adaf8f18e9ae7e86dd69be0b9e71e86404f
100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -262,12 +262,13 @@ static bool
vfio_listener_skipped_section(MemoryRegionSection *section)
/* Called with rcu_read_lock held. */
static bool vfio_get_xlat_addr(IOMMUTLBEntry *iotlb, void **vaddr,
- ram_addr_t *ram_addr, bool *read_only)
+ ram_addr_t *ram_addr, bool *read_only,
+ Error **errp)
{
bool ret, mr_has_discard_manager;
ret = memory_get_xlat_addr(iotlb, vaddr, ram_addr, read_only,
- &mr_has_discard_manager);
+ &mr_has_discard_manager, errp);
if (ret && mr_has_discard_manager) {
/*
* Malicious VMs might trigger discarding of IOMMU-mapped memory. The
@@ -297,6 +298,7 @@ static void vfio_iommu_map_notify(IOMMUNotifier *n,
IOMMUTLBEntry *iotlb)
hwaddr iova = iotlb->iova + giommu->iommu_offset;
void *vaddr;
int ret;
+ Error *local_err = NULL;
trace_vfio_iommu_map_notify(iotlb->perm == IOMMU_NONE ? "UNMAP" : "MAP",
iova, iova + iotlb->addr_mask);
@@ -313,7 +315,8 @@ static void vfio_iommu_map_notify(IOMMUNotifier *n,
IOMMUTLBEntry *iotlb)
if ((iotlb->perm & IOMMU_RW) != IOMMU_NONE) {
bool read_only;
- if (!vfio_get_xlat_addr(iotlb, &vaddr, NULL, &read_only)) {
+ if (!vfio_get_xlat_addr(iotlb, &vaddr, NULL, &read_only, &local_err)) {
+ error_report_err(local_err);
goto out;
}
/*
@@ -1230,6 +1233,7 @@ static void vfio_iommu_map_dirty_notify(IOMMUNotifier *n,
IOMMUTLBEntry *iotlb)
VFIOContainerBase *bcontainer = giommu->bcontainer;
hwaddr iova = iotlb->iova + giommu->iommu_offset;
ram_addr_t translated_addr;
+ Error *local_err = NULL;
int ret = -EINVAL;
trace_vfio_iommu_map_dirty_notify(iova, iova + iotlb->addr_mask);
@@ -1241,7 +1245,8 @@ static void vfio_iommu_map_dirty_notify(IOMMUNotifier *n,
IOMMUTLBEntry *iotlb)
}
rcu_read_lock();
- if (!vfio_get_xlat_addr(iotlb, NULL, &translated_addr, NULL)) {
+ if (!vfio_get_xlat_addr(iotlb, NULL, &translated_addr, NULL, &local_err)) {
+ error_report_err(local_err);
goto out_lock;
}
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index
ddae494ca8e8154ce03b88bc781fe9f1e639aceb..a6f06266cfc798b20b98001fa97ce771722175ec
100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -203,6 +203,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n,
IOMMUTLBEntry *iotlb)
void *vaddr;
int ret;
Int128 llend;
+ Error *local_err = NULL;
if (iotlb->target_as != &address_space_memory) {
error_report("Wrong target AS \"%s\", only system memory is allowed",
@@ -222,7 +223,9 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n,
IOMMUTLBEntry *iotlb)
if ((iotlb->perm & IOMMU_RW) != IOMMU_NONE) {
bool read_only;
- if (!memory_get_xlat_addr(iotlb, &vaddr, NULL, &read_only, NULL)) {
+ if (!memory_get_xlat_addr(iotlb, &vaddr, NULL, &read_only, NULL,
+ &local_err)) {
+ error_report_err(local_err);
return;
}
ret = vhost_vdpa_dma_map(s, VHOST_VDPA_GUEST_PA_ASID, iova,
diff --git a/system/memory.c b/system/memory.c
index
cbc098216b789f50460f1d1bc7ec122030693d9e..9dfebf44a4ae4d4942353213b18d05199e95d681
100644
--- a/system/memory.c
+++ b/system/memory.c
@@ -2174,7 +2174,7 @@ void
ram_discard_manager_unregister_listener(RamDiscardManager *rdm,
/* Called with rcu_read_lock held. */
bool memory_get_xlat_addr(IOMMUTLBEntry *iotlb, void **vaddr,
ram_addr_t *ram_addr, bool *read_only,
- bool *mr_has_discard_manager)
+ bool *mr_has_discard_manager, Error **errp)
{
MemoryRegion *mr;
hwaddr xlat;
@@ -2192,7 +2192,7 @@ bool memory_get_xlat_addr(IOMMUTLBEntry *iotlb, void
**vaddr,
mr = address_space_translate(&address_space_memory, iotlb->translated_addr,
&xlat, &len, writable,
MEMTXATTRS_UNSPECIFIED);
if (!memory_region_is_ram(mr)) {
- error_report("iommu map to non memory area %" HWADDR_PRIx "", xlat);
+ error_setg(errp, "iommu map to non memory area %" HWADDR_PRIx "",
xlat);
return false;
} else if (memory_region_has_ram_discard_manager(mr)) {
RamDiscardManager *rdm = memory_region_get_ram_discard_manager(mr);
@@ -2211,8 +2211,8 @@ bool memory_get_xlat_addr(IOMMUTLBEntry *iotlb, void
**vaddr,
* were already restored before IOMMUs are restored.
*/
if (!ram_discard_manager_is_populated(rdm, &tmp)) {
- error_report("iommu map to discarded memory (e.g., unplugged via"
- " virtio-mem): %" HWADDR_PRIx "",
+ error_setg(errp, "iommu map to discarded memory (e.g., unplugged"
+ " via virtio-mem): %" HWADDR_PRIx "",
iotlb->translated_addr);
return false;
}
@@ -2223,7 +2223,7 @@ bool memory_get_xlat_addr(IOMMUTLBEntry *iotlb, void
**vaddr,
* check that it did not truncate too much.
*/
if (len & iotlb->addr_mask) {
- error_report("iommu has granularity incompatible with target AS");
+ error_setg(errp, "iommu has granularity incompatible with target AS");
return false;
}
--
2.44.0
