Re: [PATCH v10 12/26] gunyah: vm_mgr: Add/remove user memory regions
From: Srivatsa Vaddagiri <hidden>
Date: 2023-02-21 12:45:34
Also in:
linux-arm-msm, linux-devicetree, linux-doc, lkml
* Elliot Berman [off-list ref] [2023-02-14 13:24:16]:
+int gh_vm_mem_alloc(struct gh_vm *ghvm, struct gh_userspace_memory_region *region)
+{
+ struct gh_vm_mem *mapping, *tmp_mapping;
+ struct gh_rm_mem_entry *mem_entries;
+ phys_addr_t curr_page, prev_page;
+ struct gh_rm_mem_parcel *parcel;
+ int i, j, pinned, ret = 0;
+ size_t entry_size;
+ u16 vmid;
+
+ if (!gh_api_has_feature(GH_API_FEATURE_MEMEXTENT))
+ return -EOPNOTSUPP;
+
+ if (!region->memory_size || !PAGE_ALIGNED(region->memory_size) ||
+ !PAGE_ALIGNED(region->userspace_addr) || !PAGE_ALIGNED(region->guest_phys_addr))
+ return -EINVAL;
Check for wraps also:
region->guest_phys_addr + region->memory_size > region->guest_phys_addr
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