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Re: [Qemu-arm] [Qemu-devel] [RFC v6 8/9] hw/arm/smmuv3: VFIO integration


From: Michael S. Tsirkin
Subject: Re: [Qemu-arm] [Qemu-devel] [RFC v6 8/9] hw/arm/smmuv3: VFIO integration
Date: Fri, 25 Aug 2017 20:13:09 +0300

On Wed, Aug 23, 2017 at 08:39:18AM +0200, Auger Eric wrote:
> Hi Linu,
> 
> On 23/08/2017 06:24, Linu Cherian wrote:
> > Hi Eric,
> > 
> > 
> > On Fri Aug 11, 2017 at 04:22:33PM +0200, Eric Auger wrote:
> >> This patch allows doing PCIe passthrough with a guest exposed
> >> with a vSMMUv3. It implements the replay and notify_flag_changed
> >> iommu ops. Also on TLB and data structure invalidation commands,
> >> we replay the mappings so that the physical IOMMU implements
> >> updated stage 1 settings (Guest IOVA -> Guest PA) + stage 2 settings.
> >>
> >> This works only if the guest smmuv3 driver implements the
> >> "tlbi-on-map" option.
> >>
> >> Signed-off-by: Eric Auger <address@hidden>
> > 
> > Tried out launching a guest with Qemu option "-machine virt-2.10,smmu"
> > and a 1G Ethernet controller as vfio-pci device. It works fine for me.
> 
> Hum sorry, I forgot to update the cover letter. You need to use -machine
> virt-2.11,smmu for the instantiation as the 2.10 machine was released as
> part of 2.10 and those changes only apply on 2.11 mach virt introduced
> in this series. Please apologize for the pain.
> 
> I am going to release a new version this week fixing my last DPDK bug
> (at least I am aware of ). In this new version, the instantiation method
> will change to -device smmuv3 which is closer to what is done on Intel.
>
> By the way I will also take time to provide some more info about the
> VFIO integration as it is implemented in this series although this
> latter may evolve due to NAK of kernel FW quirk.

Yes I think changing compat string to avoid pretending this is smmuv3
was a hard requirement. So you might need to do -device qemu-smmuv3
if you want VFIO support with this PV quirk.

For now, how about a subset of the functionality with VFIO disabled?
People can use it with virtio for now.


> Thank you for testing!
> 
> Best Regards
> 
> Eric
> > 
> > Qemu source: https://github.com/eauger/qemu.git Branch: v2.10.0-rc2-SMMU-v6 
> >  
> > 
> > But had to make this change, 
> > 
> > --- a/hw/arm/virt.c                                                         
> >            
> > +++ b/hw/arm/virt.c                                                         
> >            
> > @@ -1806,7 +1806,7 @@ static void virt_machine_2_10_options(MachineClass 
> > *mc)          
> >      virt_machine_2_11_options(mc);                                         
> >            
> >      SET_MACHINE_COMPAT(mc, VIRT_COMPAT_2_10);                              
> >            
> >                                                                             
> >            
> > -    vmc->no_smmu = true;                                                   
> >            
> > +    vmc->no_smmu = false;                                                  
> >            
> >  }                                                                          
> >            
> >  DEFINE_VIRT_MACHINE(2, 10) 
> > 
> > so that qemu doesnt complain about "Property .smmu not found"
> > 
> > Will let you know if i have updates on further testing.
> > 
> > Thanks.
> > 
> >>
> >> ---
> >>
> >> v5 -> v6:
> >> - use IOMMUMemoryRegion
> >> - handle implementation defined SMMU_CMD_TLBI_NH_VA_AM cmd
> >>   (goes along with TLBI_ON_MAP FW quirk)
> >> - replay systematically unmap the whole range first
> >> - smmuv3_map_hook does not unmap anymore and the unmap is done
> >>   before the replay
> >> - add and use smmuv3_context_device_invalidate instead of
> >>   blindly replaying everything
> >> ---
> >>  hw/arm/smmuv3-internal.h |   1 +
> >>  hw/arm/smmuv3.c          | 265 
> >> ++++++++++++++++++++++++++++++++++++++++++++++-
> >>  hw/arm/trace-events      |  14 +++
> >>  3 files changed, 277 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/hw/arm/smmuv3-internal.h b/hw/arm/smmuv3-internal.h
> >> index e255df1..ac4628f 100644
> >> --- a/hw/arm/smmuv3-internal.h
> >> +++ b/hw/arm/smmuv3-internal.h
> >> @@ -344,6 +344,7 @@ enum {
> >>      SMMU_CMD_RESUME          = 0x44,
> >>      SMMU_CMD_STALL_TERM,
> >>      SMMU_CMD_SYNC,          /* 0x46 */
> >> +    SMMU_CMD_TLBI_NH_VA_AM   = 0x8F, /* VIOMMU Impl Defined */
> >>  };
> >>  
> >>  static const char *cmd_stringify[] = {
> >> diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
> >> index e195a0e..89fb116 100644
> >> --- a/hw/arm/smmuv3.c
> >> +++ b/hw/arm/smmuv3.c
> >> @@ -25,6 +25,7 @@
> >>  #include "exec/address-spaces.h"
> >>  #include "trace.h"
> >>  #include "qemu/error-report.h"
> >> +#include "exec/target_page.h"
> >>  
> >>  #include "hw/arm/smmuv3.h"
> >>  #include "smmuv3-internal.h"
> >> @@ -143,6 +144,71 @@ static MemTxResult smmu_read_cmdq(SMMUV3State *s, Cmd 
> >> *cmd)
> >>      return ret;
> >>  }
> >>  
> >> +static void smmuv3_replay_all(SMMUState *s)
> >> +{
> >> +    SMMUNotifierNode *node;
> >> +
> >> +    QLIST_FOREACH(node, &s->notifiers_list, next) {
> >> +        trace_smmuv3_replay_all(node->sdev->iommu.parent_obj.name);
> >> +        memory_region_iommu_replay_all(&node->sdev->iommu);
> >> +    }
> >> +}
> >> +
> >> +/* Replay the mappings for a given streamid */
> >> +static void smmuv3_context_device_invalidate(SMMUState *s, uint16_t sid)
> >> +{
> >> +    uint8_t bus_n, devfn;
> >> +    SMMUPciBus *smmu_bus;
> >> +    SMMUDevice *smmu;
> >> +
> >> +    trace_smmuv3_context_device_invalidate(sid);
> >> +    bus_n = PCI_BUS_NUM(sid);
> >> +    smmu_bus = smmu_find_as_from_bus_num(s, bus_n);
> >> +    if (smmu_bus) {
> >> +        devfn = PCI_FUNC(sid);
> >> +        smmu = smmu_bus->pbdev[devfn];
> >> +        if (smmu) {
> >> +            memory_region_iommu_replay_all(&smmu->iommu);
> >> +        }
> >> +    }
> >> +}
> >> +
> >> +static void smmuv3_replay_single(IOMMUMemoryRegion *mr, IOMMUNotifier *n,
> >> +                                 uint64_t iova);
> >> +
> >> +static void smmuv3_replay_range(IOMMUMemoryRegion *mr, IOMMUNotifier *n,
> >> +                                 uint64_t iova, size_t nb_pages);
> >> +
> >> +static void smmuv3_notify_single(SMMUState *s, uint64_t iova)
> >> +{
> >> +    SMMUNotifierNode *node;
> >> +
> >> +    QLIST_FOREACH(node, &s->notifiers_list, next) {
> >> +        IOMMUMemoryRegion *mr = &node->sdev->iommu;
> >> +        IOMMUNotifier *n;
> >> +
> >> +        trace_smmuv3_notify_all(node->sdev->iommu.parent_obj.name, iova);
> >> +        IOMMU_NOTIFIER_FOREACH(n, mr) {
> >> +            smmuv3_replay_single(mr, n, iova);
> >> +        }
> >> +    }
> >> +}
> >> +
> >> +static void smmuv3_notify_range(SMMUState *s, uint64_t iova, size_t size)
> >> +{
> >> +    SMMUNotifierNode *node;
> >> +
> >> +    QLIST_FOREACH(node, &s->notifiers_list, next) {
> >> +        IOMMUMemoryRegion *mr = &node->sdev->iommu;
> >> +        IOMMUNotifier *n;
> >> +
> >> +        trace_smmuv3_notify_all(node->sdev->iommu.parent_obj.name, iova);
> >> +        IOMMU_NOTIFIER_FOREACH(n, mr) {
> >> +            smmuv3_replay_range(mr, n, iova, size);
> >> +        }
> >> +    }
> >> +}
> >> +
> >>  static int smmu_cmdq_consume(SMMUV3State *s)
> >>  {
> >>      uint32_t error = SMMU_CMD_ERR_NONE;
> >> @@ -178,28 +244,38 @@ static int smmu_cmdq_consume(SMMUV3State *s)
> >>              break;
> >>          case SMMU_CMD_PREFETCH_CONFIG:
> >>          case SMMU_CMD_PREFETCH_ADDR:
> >> +            break;
> >>          case SMMU_CMD_CFGI_STE:
> >>          {
> >>               uint32_t streamid = cmd.word[1];
> >>  
> >>               trace_smmuv3_cmdq_cfgi_ste(streamid);
> >> -            break;
> >> +             smmuv3_context_device_invalidate(&s->smmu_state, streamid);
> >> +             break;
> >>          }
> >>          case SMMU_CMD_CFGI_STE_RANGE: /* same as SMMU_CMD_CFGI_ALL */
> >>          {
> >> -            uint32_t start = cmd.word[1], range, end;
> >> +            uint32_t start = cmd.word[1], range, end, i;
> >>  
> >>              range = extract32(cmd.word[2], 0, 5);
> >>              end = start + (1 << (range + 1)) - 1;
> >>              trace_smmuv3_cmdq_cfgi_ste_range(start, end);
> >> +            for (i = start; i <= end; i++) {
> >> +                smmuv3_context_device_invalidate(&s->smmu_state, i);
> >> +            }
> >>              break;
> >>          }
> >>          case SMMU_CMD_CFGI_CD:
> >>          case SMMU_CMD_CFGI_CD_ALL:
> >> +        {
> >> +             uint32_t streamid = cmd.word[1];
> >> +
> >> +            smmuv3_context_device_invalidate(&s->smmu_state, streamid);
> >>              break;
> >> +        }
> >>          case SMMU_CMD_TLBI_NH_ALL:
> >>          case SMMU_CMD_TLBI_NH_ASID:
> >> -            printf("%s TLBI* replay\n", __func__);
> >> +            smmuv3_replay_all(&s->smmu_state);
> >>              break;
> >>          case SMMU_CMD_TLBI_NH_VA:
> >>          {
> >> @@ -210,6 +286,20 @@ static int smmu_cmdq_consume(SMMUV3State *s)
> >>              uint64_t addr = high << 32 | (low << 12);
> >>  
> >>              trace_smmuv3_cmdq_tlbi_nh_va(asid, vmid, addr);
> >> +            smmuv3_notify_single(&s->smmu_state, addr);
> >> +            break;
> >> +        }
> >> +        case SMMU_CMD_TLBI_NH_VA_AM:
> >> +        {
> >> +            int asid = extract32(cmd.word[1], 16, 16);
> >> +            int am = extract32(cmd.word[1], 0, 16);
> >> +            uint64_t low = extract32(cmd.word[2], 12, 20);
> >> +            uint64_t high = cmd.word[3];
> >> +            uint64_t addr = high << 32 | (low << 12);
> >> +            size_t size = am << 12;
> >> +
> >> +            trace_smmuv3_cmdq_tlbi_nh_va_am(asid, am, addr, size);
> >> +            smmuv3_notify_range(&s->smmu_state, addr, size);
> >>              break;
> >>          }
> >>          case SMMU_CMD_TLBI_NH_VAA:
> >> @@ -222,6 +312,7 @@ static int smmu_cmdq_consume(SMMUV3State *s)
> >>          case SMMU_CMD_TLBI_S12_VMALL:
> >>          case SMMU_CMD_TLBI_S2_IPA:
> >>          case SMMU_CMD_TLBI_NSNH_ALL:
> >> +            smmuv3_replay_all(&s->smmu_state);
> >>              break;
> >>          case SMMU_CMD_ATC_INV:
> >>          case SMMU_CMD_PRI_RESP:
> >> @@ -804,6 +895,172 @@ out:
> >>      return entry;
> >>  }
> >>  
> >> +static int smmuv3_replay_hook(IOMMUTLBEntry *entry, void *private)
> >> +{
> >> +    trace_smmuv3_replay_hook(entry->iova, entry->translated_addr,
> >> +                             entry->addr_mask, entry->perm);
> >> +    memory_region_notify_one((IOMMUNotifier *)private, entry);
> >> +    return 0;
> >> +}
> >> +
> >> +static int smmuv3_map_hook(IOMMUTLBEntry *entry, void *private)
> >> +{
> >> +    trace_smmuv3_map_hook(entry->iova, entry->translated_addr,
> >> +                          entry->addr_mask, entry->perm);
> >> +    memory_region_notify_one((IOMMUNotifier *)private, entry);
> >> +    return 0;
> >> +}
> >> +
> >> +/* Unmap the whole range in the notifier's scope. */
> >> +static void smmuv3_unmap_notifier(SMMUDevice *sdev, IOMMUNotifier *n)
> >> +{
> >> +    IOMMUTLBEntry entry;
> >> +    hwaddr size;
> >> +    hwaddr start = n->start;
> >> +    hwaddr end = n->end;
> >> +
> >> +    size = end - start + 1;
> >> +
> >> +    entry.target_as = &address_space_memory;
> >> +    /* Adjust iova for the size */
> >> +    entry.iova = n->start & ~(size - 1);
> >> +    /* This field is meaningless for unmap */
> >> +    entry.translated_addr = 0;
> >> +    entry.perm = IOMMU_NONE;
> >> +    entry.addr_mask = size - 1;
> >> +
> >> +    /* TODO: check start/end/size/mask */
> >> +
> >> +    trace_smmuv3_unmap_notifier(pci_bus_num(sdev->bus),
> >> +                                PCI_SLOT(sdev->devfn),
> >> +                                PCI_FUNC(sdev->devfn),
> >> +                                entry.iova, size);
> >> +
> >> +    memory_region_notify_one(n, &entry);
> >> +}
> >> +
> >> +static void smmuv3_replay(IOMMUMemoryRegion *mr, IOMMUNotifier *n)
> >> +{
> >> +    SMMUDevice *sdev = container_of(mr, SMMUDevice, iommu);
> >> +    SMMUV3State *s = sdev->smmu;
> >> +    SMMUBaseClass *sbc = SMMU_DEVICE_GET_CLASS(s);
> >> +    SMMUTransCfg cfg = {};
> >> +    int ret;
> >> +
> >> +    smmuv3_unmap_notifier(sdev, n);
> >> +
> >> +    ret = smmuv3_decode_config(mr, &cfg);
> >> +    if (ret) {
> >> +        error_report("%s error decoding the configuration for iommu 
> >> mr=%s",
> >> +                     __func__, mr->parent_obj.name);
> >> +    }
> >> +
> >> +    if (cfg.disabled || cfg.bypassed) {
> >> +        return;
> >> +    }
> >> +    /* is the smmu enabled */
> >> +    sbc->page_walk_64(&cfg, 0, (1ULL << (64 - cfg.tsz)) - 1, false,
> >> +                      smmuv3_replay_hook, n);
> >> +}
> >> +static void smmuv3_replay_range(IOMMUMemoryRegion *mr, IOMMUNotifier *n,
> >> +                                 uint64_t iova, size_t size)
> >> +{
> >> +    SMMUDevice *sdev = container_of(mr, SMMUDevice, iommu);
> >> +    SMMUV3State *s = sdev->smmu;
> >> +    SMMUBaseClass *sbc = SMMU_DEVICE_GET_CLASS(s);
> >> +    SMMUTransCfg cfg = {};
> >> +    IOMMUTLBEntry entry;
> >> +    int ret;
> >> +
> >> +    trace_smmuv3_replay_range(mr->parent_obj.name, iova, size, n);
> >> +    ret = smmuv3_decode_config(mr, &cfg);
> >> +    if (ret) {
> >> +        error_report("%s error decoding the configuration for iommu 
> >> mr=%s",
> >> +                     __func__, mr->parent_obj.name);
> >> +    }
> >> +
> >> +    if (cfg.disabled || cfg.bypassed) {
> >> +        return;
> >> +    }
> >> +
> >> +    /* first unmap */
> >> +    entry.target_as = &address_space_memory;
> >> +    entry.iova = iova & ~(size - 1);
> >> +    entry.addr_mask = size - 1;
> >> +    entry.perm = IOMMU_NONE;
> >> +
> >> +    memory_region_notify_one(n, &entry);
> >> +
> >> +    /* then figure out if a new mapping needs to be applied */
> >> +    sbc->page_walk_64(&cfg, iova, iova + entry.addr_mask , false,
> >> +                      smmuv3_map_hook, n);
> >> +}
> >> +
> >> +static void smmuv3_replay_single(IOMMUMemoryRegion *mr, IOMMUNotifier *n,
> >> +                                 uint64_t iova)
> >> +{
> >> +    SMMUDevice *sdev = container_of(mr, SMMUDevice, iommu);
> >> +    SMMUV3State *s = sdev->smmu;
> >> +    size_t target_page_size = qemu_target_page_size();
> >> +    SMMUBaseClass *sbc = SMMU_DEVICE_GET_CLASS(s);
> >> +    SMMUTransCfg cfg = {};
> >> +    IOMMUTLBEntry entry;
> >> +    int ret;
> >> +
> >> +    trace_smmuv3_replay_single(mr->parent_obj.name, iova, n);
> >> +    ret = smmuv3_decode_config(mr, &cfg);
> >> +    if (ret) {
> >> +        error_report("%s error decoding the configuration for iommu 
> >> mr=%s",
> >> +                     __func__, mr->parent_obj.name);
> >> +    }
> >> +
> >> +    if (cfg.disabled || cfg.bypassed) {
> >> +        return;
> >> +    }
> >> +
> >> +    /* first unmap */
> >> +    entry.target_as = &address_space_memory;
> >> +    entry.iova = iova & ~(target_page_size - 1);
> >> +    entry.addr_mask = target_page_size - 1;
> >> +    entry.perm = IOMMU_NONE;
> >> +
> >> +    memory_region_notify_one(n, &entry);
> >> +
> >> +    /* then figure out if a new mapping needs to be applied */
> >> +    sbc->page_walk_64(&cfg, iova, iova + 1, false,
> >> +                      smmuv3_map_hook, n);
> >> +}
> >> +
> >> +static void smmuv3_notify_flag_changed(IOMMUMemoryRegion *iommu,
> >> +                                       IOMMUNotifierFlag old,
> >> +                                       IOMMUNotifierFlag new)
> >> +{
> >> +    SMMUDevice *sdev = container_of(iommu, SMMUDevice, iommu);
> >> +    SMMUV3State *s3 = sdev->smmu;
> >> +    SMMUState *s = &(s3->smmu_state);
> >> +    SMMUNotifierNode *node = NULL;
> >> +    SMMUNotifierNode *next_node = NULL;
> >> +
> >> +    if (old == IOMMU_NOTIFIER_NONE) {
> >> +        trace_smmuv3_notify_flag_add(iommu->parent_obj.name);
> >> +        node = g_malloc0(sizeof(*node));
> >> +        node->sdev = sdev;
> >> +        QLIST_INSERT_HEAD(&s->notifiers_list, node, next);
> >> +        return;
> >> +    }
> >> +
> >> +    /* update notifier node with new flags */
> >> +    QLIST_FOREACH_SAFE(node, &s->notifiers_list, next, next_node) {
> >> +        if (node->sdev == sdev) {
> >> +            if (new == IOMMU_NOTIFIER_NONE) {
> >> +                trace_smmuv3_notify_flag_del(iommu->parent_obj.name);
> >> +                QLIST_REMOVE(node, next);
> >> +                g_free(node);
> >> +            }
> >> +            return;
> >> +        }
> >> +    }
> >> +}
> >>  
> >>  static inline void smmu_update_base_reg(SMMUV3State *s, uint64_t *base,
> >>                                          uint64_t val)
> >> @@ -1125,6 +1382,8 @@ static void 
> >> smmuv3_iommu_memory_region_class_init(ObjectClass *klass,
> >>      IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
> >>  
> >>      imrc->translate = smmuv3_translate;
> >> +    imrc->notify_flag_changed = smmuv3_notify_flag_changed;
> >> +    imrc->replay = smmuv3_replay;
> >>  }
> >>  
> >>  static const TypeInfo smmuv3_type_info = {
> >> diff --git a/hw/arm/trace-events b/hw/arm/trace-events
> >> index f9b9cbe..8228e26 100644
> >> --- a/hw/arm/trace-events
> >> +++ b/hw/arm/trace-events
> >> @@ -27,6 +27,7 @@ smmuv3_cmdq_opcode(const char *opcode) "<--- %s"
> >>  smmuv3_cmdq_cfgi_ste(int streamid) "     |_ streamid =%d"
> >>  smmuv3_cmdq_cfgi_ste_range(int start, int end) "     |_ start=0x%d - 
> >> end=0x%d"
> >>  smmuv3_cmdq_tlbi_nh_va(int asid, int vmid, uint64_t addr) "     |_ asid 
> >> =%d vmid =%d addr=0x%"PRIx64
> >> +smmuv3_cmdq_tlbi_nh_va_am(int asid, int am, size_t size, uint64_t addr) " 
> >>     |_ asid =%d am =%d size=0x%lx addr=0x%"PRIx64
> >>  smmuv3_cmdq_consume_sev(void) "CMD_SYNC CS=SEV not supported, ignoring"
> >>  smmuv3_cmdq_consume_out(uint8_t prod_wrap, uint32_t prod, uint8_t 
> >> cons_wrap, uint32_t cons) "prod_wrap:%d, prod:0x%x cons_wrap:%d cons:0x%x"
> >>  smmuv3_update(bool is_empty, uint32_t prod, uint32_t cons, uint8_t 
> >> prod_wrap, uint8_t cons_wrap) "q empty:%d prod:%d cons:%d p.wrap:%d 
> >> p.cons:%d"
> >> @@ -50,3 +51,16 @@ smmuv3_dump_ste(int i, uint32_t word0, int j,  uint32_t 
> >> word1) "STE[%2d]: 0x%x\t
> >>  smmuv3_dump_cd(int i, uint32_t word0, int j,  uint32_t word1) "CD[%2d]: 
> >> 0x%x\t CD[%2d]: 0x%x"
> >>  smmuv3_dump_cmd(int i, uint32_t word0, int j,  uint32_t word1) "CMD[%2d]: 
> >> 0x%x\t CMD[%2d]: 0x%x"
> >>  smmuv3_cfg_stage(int s, uint32_t oas, uint32_t tsz, uint64_t ttbr, bool 
> >> aa64, uint32_t granule_sz, int initial_level) "TransCFG stage:%d oas:%d 
> >> tsz:%d ttbr:0x%"PRIx64"  aa64:%d granule_sz:%d, initial_level = %d"
> >> +
> >> +smmuv3_replay(uint16_t sid, bool enabled) "sid=%d, enabled=%d"
> >> +smmuv3_replay_hook(hwaddr iova, hwaddr pa, hwaddr mask, int perm) 
> >> "iova=0x%"PRIx64" pa=0x%" PRIx64" mask=0x%"PRIx64" perm=%d"
> >> +smmuv3_map_hook(hwaddr iova, hwaddr pa, hwaddr mask, int perm) 
> >> "iova=0x%"PRIx64" pa=0x%" PRIx64" mask=0x%"PRIx64" perm=%d"
> >> +smmuv3_notify_flag_add(const char *iommu) "ADD SMMUNotifier node for 
> >> iommu mr=%s"
> >> +smmuv3_notify_flag_del(const char *iommu) "DEL SMMUNotifier node for 
> >> iommu mr=%s"
> >> +smmuv3_replay_single(const char *name, uint64_t iova, void *n) "iommu 
> >> mr=%s iova=0x%"PRIx64" n=%p"
> >> +smmuv3_replay_range(const char *name, uint64_t iova, size_t size, void 
> >> *n) "iommu mr=%s iova=0x%"PRIx64" size=0x%lx n=%p"
> >> +smmuv3_replay_all(const char *name) "iommu mr=%s"
> >> +smmuv3_notify_all(const char *name, uint64_t iova) "iommu mr=%s 
> >> iova=0x%"PRIx64
> >> +smmuv3_unmap_notifier(uint8_t bus, uint8_t slot, uint8_t fn, uint64_t 
> >> iova, uint64_t size) "Device %02x:%02x.%x start 0x%"PRIx64" size 0x%"PRIx64
> >> +smmuv3_context_device_invalidate(uint32_t sid) "sid=%d"
> >> +
> >> -- 
> >> 2.5.5
> >>
> >>
> > 



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