Displaying 7 results from an estimated 7 matches for "gnttab_map_ref".
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gnttab_map_refs
2012 Apr 10
7
[PATCH v3 1/2] xen: enter/exit lazy_mmu_mode around m2p_override calls
...v_bus_addr |
(req->u.rw.seg[i].first_sect << 9);
}
+ arch_leave_lazy_mmu_mode();
return ret;
}
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index b4d4eac..c7dc2d6 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -751,6 +751,8 @@ int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
if (xen_feature(XENFEAT_auto_translated_physmap))
return ret;
+ arch_enter_lazy_mmu_mode();
+
for (i = 0; i < count; i++) {
/* Do not add to override if the map failed. */
if (map_ops[i].status)
@@ -769,6 +771,8 @@ int gnttab_map_refs(struct...
2013 Nov 20
6
[PATCH] xen/gnttab: leave lazy MMU mode in the case of a m2p override failure
...msw@amazon.com>
---
drivers/xen/grant-table.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index 62ccf54..0283871 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -930,9 +930,10 @@ int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
ret = m2p_add_override(mfn, pages[i], kmap_ops ?
&kmap_ops[i] : NULL);
if (ret)
- return ret;
+ goto out;
}
+ out:
if (lazy)
arch_leave_lazy_mmu_mode();
@@ -969,9 +970,10 @@ int gnttab_unmap_refs(struct gnttab_unmap_grant_r...
2014 Feb 27
3
[PATCH] xen/grant-table: Refactor gnttab_[un]map_refs to avoid m2p_override
...achine(pfn, page->index);
if (kmap_op != NULL) {
if (!PageHighMem(page)) {
struct multicall_space mcs;
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index b84e3ab..6d325bd 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -933,9 +933,6 @@ int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
struct page **pages, unsigned int count)
{
int i, ret;
- bool lazy = false;
- pte_t *pte;
- unsigned long mfn;
ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, map_ops, count);
if (ret)
@@ -947,45 +944,7 @@ int gnttab_map_refs(struct gnt...
2014 Feb 27
3
[PATCH] xen/grant-table: Refactor gnttab_[un]map_refs to avoid m2p_override
...achine(pfn, page->index);
if (kmap_op != NULL) {
if (!PageHighMem(page)) {
struct multicall_space mcs;
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index b84e3ab..6d325bd 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -933,9 +933,6 @@ int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
struct page **pages, unsigned int count)
{
int i, ret;
- bool lazy = false;
- pte_t *pte;
- unsigned long mfn;
ret = HYPERVISOR_grant_table_op(GNTTABOP_map_grant_ref, map_ops, count);
if (ret)
@@ -947,45 +944,7 @@ int gnttab_map_refs(struct gnt...
2012 Mar 23
10
[hybrid] : mmap pfn space...
Hi Ian/Stefano,
So, I''m back to using pfn space from maxphysaddr below. Stefano, you
suggested ballooning, but that would be just too slow. There are lot of
pages to be mapped, 4k at a time during guest creation, and I am afraid
ballooning and hypercalls to populate EPT will be pretty slow.
OTOH, there is tons of address space available between max-physaddr and
max pfn in dom0. Stefano,
2012 Sep 19
27
[PATCH] Persistent grant maps for xen blk drivers
...t_map_op(&map[i], vaddr(pending_req, i), flags,
- req->u.rw.seg[i].gref,
- pending_req->blkif->domid);
+ if (new_map) {
+ gnttab_set_map_op(&map[segs_to_init++], addr,
+ flags, req->u.rw.seg[i].gref,
+ pending_req->blkif->domid);
+ }
}
- ret = gnttab_map_refs(map, NULL, &blkbk->pending_page(pending_req, 0), nseg);
- BUG_ON(ret);
+ if (segs_to_init) {
+ ret = gnttab_map_refs(map, NULL, pages_to_gnt, segs_to_init);
+ BUG_ON(ret);
+ }
/*
* Now swizzle the MFN in our domain with the MFN from the other domain
* so that when we access vadd...
2013 Oct 17
42
[PATCH v8 0/19] enable swiotlb-xen on arm and arm64
...introduce xen_dma_map/unmap_page and xen_dma_sync_single_for_cpu/device;
- use xen_dma_map/unmap_page, xen_dma_sync_single_for_cpu/device in
swiotlb-xen;
- use dev_warn instead of pr_warn;
- remove the extra autotranslate check in biomerge.c;
- call set_phys_to_machine after mapping grant refs in gnttab_map_refs;
- call set_phys_to_machine after unmapping grant refs in gnttab_unmap_refs;
- allow __set_phys_to_machine to be called for autotranslate guests on
x86.
Changes in v6:
- check for dev->dma_mask being NULL in dma_capable;
- update the comments and the hypercalls structures;
- add a xen_dma_in...