Re: [Qemu-devel] [PATCH RFC v4 01/20] vfio: trace map/unmap for notify as well

[Alex Williamson <alex.williamson@redhat.com>]

On Fri, 20 Jan 2017 21:08:37 +0800
Peter Xu <peterx@redhat.com> wrote:

> We traces its range, but we don't know whether it's a MAP/UNMAP. Let's
> dump it as well.
> 
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
>  hw/vfio/common.c     | 3 ++-
>  hw/vfio/trace-events | 2 +-
>  2 files changed, 3 insertions(+), 2 deletions(-)

Acked-by: Alex Williamson <alex.williamson@redhat.com>

> diff --git a/hw/vfio/common.c b/hw/vfio/common.c
> index 801578b..174f351 100644
> --- a/hw/vfio/common.c
> +++ b/hw/vfio/common.c
> @@ -305,7 +305,8 @@ static void vfio_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *iotlb)
>      void *vaddr;
>      int ret;
>  
> -    trace_vfio_iommu_map_notify(iova, iova + iotlb->addr_mask);
> +    trace_vfio_iommu_map_notify(iotlb->perm == IOMMU_NONE ? "UNMAP" : "MAP",
> +                                iova, iova + iotlb->addr_mask);
>  
>      if (iotlb->target_as != &address_space_memory) {
>          error_report("Wrong target AS \"%s\", only system memory is allowed",
> diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
> index ef81609..7ae8233 100644
> --- a/hw/vfio/trace-events
> +++ b/hw/vfio/trace-events
> @@ -84,7 +84,7 @@ vfio_pci_igd_lpc_bridge_enabled(const char *name) "%s"
>  # hw/vfio/common.c
>  vfio_region_write(const char *name, int index, uint64_t addr, uint64_t data, unsigned size) " (%s:region%d+0x%"PRIx64", 0x%"PRIx64 ", %d)"
>  vfio_region_read(char *name, int index, uint64_t addr, unsigned size, uint64_t data) " (%s:region%d+0x%"PRIx64", %d) = 0x%"PRIx64
> -vfio_iommu_map_notify(uint64_t iova_start, uint64_t iova_end) "iommu map @ %"PRIx64" - %"PRIx64
> +vfio_iommu_map_notify(const char *op, uint64_t iova_start, uint64_t iova_end) "iommu %s @ %"PRIx64" - %"PRIx64
>  vfio_listener_region_add_skip(uint64_t start, uint64_t end) "SKIPPING region_add %"PRIx64" - %"PRIx64
>  vfio_listener_region_add_iommu(uint64_t start, uint64_t end) "region_add [iommu] %"PRIx64" - %"PRIx64
>  vfio_listener_region_add_ram(uint64_t iova_start, uint64_t iova_end, void *vaddr) "region_add [ram] %"PRIx64" - %"PRIx64" [%p]"