search for: pgprot_noncached

...ng tag as appropriate Reported-by: kbuild test robot <lkp at intel.com> All errors (new ones prefixed by >>, old ones prefixed by <<): drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': >> drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | ^~~~~~~~~~~~~~~~ >> drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pgprot_t' {aka 'struct <anonymous>'...

...ng tag as appropriate Reported-by: kbuild test robot <lkp at intel.com> All errors (new ones prefixed by >>, old ones prefixed by <<): drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': >> drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); | ^~~~~~~~~~~~~~~~ >> drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pgprot_t' {aka 'struct <anonymous>'...

...test robot<lkp at intel.com> >> >> All errors (new ones prefixed by >>, old ones prefixed by <<): >> >> drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': >>>> drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] >> 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); >> | ^~~~~~~~~~~~~~~~ >>>> drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pgprot_t' {aka 'st...

...test robot<lkp at intel.com> >> >> All errors (new ones prefixed by >>, old ones prefixed by <<): >> >> drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': >>>> drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] >> 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); >> | ^~~~~~~~~~~~~~~~ >>>> drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pgprot_t' {aka 'st...

...>>> >>>> All errors (new ones prefixed by >>, old ones prefixed by <<): >>>> >>>> drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': >>>>>> drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] >>>> 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); >>>> | ^~~~~~~~~~~~~~~~ >>>>>> drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pg...

...>>> >>>> All errors (new ones prefixed by >>, old ones prefixed by <<): >>>> >>>> drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': >>>>>> drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] >>>> 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); >>>> | ^~~~~~~~~~~~~~~~ >>>>>> drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pg...

...orted-by: kbuild test robot <lkp at intel.com> > > All errors (new ones prefixed by >>, old ones prefixed by <<): > > drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': > >> drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] > 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); > | ^~~~~~~~~~~~~~~~ > >> drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pgprot_t' {aka 'struct <an...

...; > > > > > > All errors (new ones prefixed by >>, old ones prefixed by <<): > > > > > > drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': > > > > > drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] > > > 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); > > > | ^~~~~~~~~~~~~~~~ > > > > > drivers/vhost/vdpa.c:754:22: error: incompatible types when assigning to type 'pgprot...

...t; All errors (new ones prefixed by >>, old ones prefixed by <<): > > > > > > > > > > drivers/vhost/vdpa.c: In function 'vhost_vdpa_fault': > > > > > > > drivers/vhost/vdpa.c:754:22: error: implicit declaration of function 'pgprot_noncached' [-Werror=implicit-function-declaration] > > > > > 754 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); > > > > > | ^~~~~~~~~~~~~~~~ > > > > > > > drivers/vhost/vdpa.c:754:22: error: incompatible types when...

...; index 166044642fd5..036fe88425c8 100644 > --- a/drivers/vhost/vdpa.c > +++ b/drivers/vhost/vdpa.c > @@ -1263,7 +1263,9 @@ static vm_fault_t vhost_vdpa_fault(struct vm_fault *vmf) > > notify = ops->get_vq_notification(vdpa, index); > > - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); > + vma->vm_page_prot = ops->get_vq_notification_pgprot ? > + ops->get_vq_notification_pgprot(vdpa, index, vma->vm_page_prot) : > + pgprot_noncached(vma->vm_page_prot); > if (remap_pfn_range(vma, vmf->add...

Hi all: This series introduce basic functionality of doorbell mapping support for vhost-vDPA. Userspace program may use mmap() to map a the doorbell of a specific virtqueue into its address space. This is help to reudce the syscall or vmexit overhead. A new vdpa_config_ops was introduced to report the location of the doorbell, vhost_vdpa may then choose to map the doorbell when: - The doorbell

Hi all: This series introduce basic functionality of doorbell mapping support for vhost-vDPA. Userspace program may use mmap() to map a the doorbell of a specific virtqueue into its address space. This is help to reudce the syscall or vmexit overhead. A new vdpa_config_ops was introduced to report the location of the doorbell, vhost_vdpa may then choose to map the doorbell when: - The doorbell

...a_config_ops *ops = vdpa->config; > + struct vdpa_notification_area notify; > + struct vm_area_struct *vma = vmf->vma; > + u16 index = vma->vm_pgoff; > + > + notify = ops->get_vq_notification(vdpa, index); > + > + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); > + if (remap_pfn_range(vma, vmf->address & PAGE_MASK, > + notify.addr >> PAGE_SHIFT, PAGE_SIZE, > + vma->vm_page_prot)) > + return VM_FAULT_SIGBUS; > + > + return...

...data; + struct vdpa_device *vdpa = v->vdpa; + const struct vdpa_config_ops *ops = vdpa->config; + struct vdpa_notification_area notify; + struct vm_area_struct *vma = vmf->vma; + u16 index = vma->vm_pgoff; + + notify = ops->get_vq_notification(vdpa, index); + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + if (remap_pfn_range(vma, vmf->address & PAGE_MASK, + notify.addr >> PAGE_SHIFT, PAGE_SIZE, + vma->vm_page_prot)) + return VM_FAULT_SIGBUS; + + return VM_FAULT_NOPAGE; +} + +static const struct vm_operations_struct vhost_vdpa_vm_ops = { + .fault...

Hey folks, This is the part-of-pvops-implementation-that-is-not-exactly-a-merge. Neat, uh? This is the majority of the work. The first patch in the series does not really belong here. It was already sent to lkml separetedly before, but I'm including it again, for a very simple reason: Try to test the paravirt patches without it, and you'll fail miserably ;-) (and it was not yet

Hey folks, This is the part-of-pvops-implementation-that-is-not-exactly-a-merge. Neat, uh? This is the majority of the work. The first patch in the series does not really belong here. It was already sent to lkml separetedly before, but I'm including it again, for a very simple reason: Try to test the paravirt patches without it, and you'll fail miserably ;-) (and it was not yet

...*ops = vdpa->config; >> +??? struct vdpa_notification_area notify; >> +??? struct vm_area_struct *vma = vmf->vma; >> +??? u16 index = vma->vm_pgoff; >> + >> +??? notify = ops->get_vq_notification(vdpa, index); >> + >> +??? vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); >> +??? if (remap_pfn_range(vma, vmf->address & PAGE_MASK, >> +??????????????? notify.addr >> PAGE_SHIFT, PAGE_SIZE, >> +??????????????? vma->vm_page_prot)) >> +??????? return VM_FAULT_SIGBUS; >> + >> +??? return VM_FAULT_NO...

..._mmap(struct device *dev, struct vm_area_struct *vma, struct metag_vm_region *c; int ret = -ENXIO; - if (dma_get_attr(DMA_ATTR_WRITE_COMBINE, attrs)) + if (attrs & DMA_ATTR_WRITE_COMBINE) vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); else vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c index c9052108094f..0306dd0f300a 100644 --- a/arch/mips/mm/dma-default.c +++ b/arch/mips/mm/dma-default.c @@ -141,7 +141,7 @@ static void *mips_dma_alloc_coherent(struct device *dev, size_t size, * XXX: s...

...Missing ops\n"); return ERR_PTR(-EINVAL); } if (!pgmap->owner) { @@ -348,11 +318,9 @@ void *memremap_pages(struct dev_pagemap *pgmap, int nid) } break; case MEMORY_DEVICE_GENERIC: - need_devmap_managed = false; break; case MEMORY_DEVICE_PCI_P2PDMA: params.pgprot = pgprot_noncached(params.pgprot); - need_devmap_managed = false; break; default: WARN(1, "Invalid pgmap type %d\n", pgmap->type); @@ -376,12 +344,6 @@ void *memremap_pages(struct dev_pagemap *pgmap, int nid) } } - if (need_devmap_managed) { - error = devmap_managed_enable_get(pgmap); -...

...} > if (!pgmap->owner) { > @@ -348,11 +318,9 @@ void *memremap_pages(struct dev_pagemap *pgmap, int nid) > } > break; > case MEMORY_DEVICE_GENERIC: > - need_devmap_managed = false; > break; > case MEMORY_DEVICE_PCI_P2PDMA: > params.pgprot = pgprot_noncached(params.pgprot); > - need_devmap_managed = false; > break; > default: > WARN(1, "Invalid pgmap type %d\n", pgmap->type); > @@ -376,12 +344,6 @@ void *memremap_pages(struct dev_pagemap *pgmap, int nid) > } > } > > - if (need_devmap_managed...