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This patch series adds support for preservation of the VM generation ID buffer address in xenstore across save/restore and migrate, and also code to increment the value in all cases except for migration. Patch 1 modifies the guest ro and rw node creation to an open coding style and cleans up some extraneous node creation. Patch 2 modifies creation of the hvmloader key in xenstore and adds

This patch series adds support for preservation of the VM generation ID buffer address in xenstore across save/restore and migrate, and also code to increment the value in all cases except for migration. The first patch modifies creation of the hvmloader key in xenstore and adds creation of a new read/write hvmloader/generation-id-addr key. The second patch changes hvmloader to use the new key (as

...if (!vm_path) { XL_LOG(ctx, XL_LOG_ERROR, "cannot allocate create paths"); + libxl_free_all(&gc); return ERROR_FAIL; } @@ -147,42 +148,47 @@ retry_transaction: xs_mkdir(ctx->xsh, t, vm_path); xs_set_permissions(ctx->xsh, t, vm_path, roperm, ARRAY_SIZE(roperm)); - xs_write(ctx->xsh, t, libxl_sprintf(ctx, "%s/vm", dom_path), vm_path, strlen(vm_path)); + xs_write(ctx->xsh, t, libxl_sprintf(&gc, "%s/vm", dom_path), vm_path, strlen(vm_path)); rc = libxl_domain_rename(ctx, *domid, 0, info->name...

...nt libxl__domain_make(libxl__gc *gc, libxl_domain_create_info *info, libxl_ctx *ctx = libxl__gc_owner(gc); int flags, ret, rc, nb_vm; char *uuid_string; - char *dom_path, *vm_path, *libxl_path; + char *dom_path, *vm_path, *libxl_path, *libxl_usb_path; struct xs_permissions roperm[2]; struct xs_permissions rwperm[1]; struct xs_permissions noperm[1]; @@ -454,6 +454,8 @@ int libxl__domain_make(libxl__gc *gc, libxl_domain_create_info *info, goto out; } + libxl_usb_path = GCSPRINTF("%s/usb", libxl_path); + noperm[0].id = 0; noperm...