Messages in this thread Patch in this message | | | From | Stefano Stabellini <> | Subject | [PATCH v8 17/17] grant-table: call set_phys_to_machine after mapping grant refs | Date | Wed, 9 Oct 2013 21:48:30 +0100 |
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When mapping/unmapping grant refs, call set_phys_to_machine to update the P2M with the new mappings for autotranslate guests.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> --- drivers/xen/grant-table.c | 17 +++++++++++++++-- 1 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 04cdeb8..a36cb03 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -49,6 +49,7 @@ #include <xen/grant_table.h> #include <xen/interface/memory.h> #include <xen/hvc-console.h> +#include <xen/swiotlb-xen.h> #include <asm/xen/hypercall.h> #include <asm/xen/interface.h> @@ -889,8 +890,15 @@ int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops, gnttab_retry_eagain_gop(GNTTABOP_map_grant_ref, map_ops + i, &map_ops[i].status, __func__); - if (xen_feature(XENFEAT_auto_translated_physmap)) + if (xen_feature(XENFEAT_auto_translated_physmap)) { + for (i = 0; i < count; i++) { + if (map_ops[i].status) + continue; + set_phys_to_machine(map_ops[i].host_addr >> PAGE_SHIFT, + map_ops[i].dev_bus_addr >> PAGE_SHIFT); + } return ret; + } if (!in_interrupt() && paravirt_get_lazy_mode() == PARAVIRT_LAZY_NONE) { arch_enter_lazy_mmu_mode(); @@ -933,8 +941,13 @@ int gnttab_unmap_refs(struct gnttab_unmap_grant_ref *unmap_ops, if (ret) return ret; - if (xen_feature(XENFEAT_auto_translated_physmap)) + if (xen_feature(XENFEAT_auto_translated_physmap)) { + for (i = 0; i < count; i++) { + set_phys_to_machine(unmap_ops[i].host_addr >> PAGE_SHIFT, + INVALID_P2M_ENTRY); + } return ret; + } if (!in_interrupt() && paravirt_get_lazy_mode() == PARAVIRT_LAZY_NONE) { arch_enter_lazy_mmu_mode(); -- 1.7.2.5
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