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dkim=none X-RZG-AUTH: ":P2EQZWCpfu+qG7CngxMFH1J+3q8wa/QXkBR9MXjAuzpIG0mv9coXAg5l+Vz7FJgt8+TgOd9sTrMwXjWWExsBKQCrpnqhqg==" X-RZG-CLASS-ID: mo00 From: Olaf Hering To: xen-devel@lists.xenproject.org Cc: Olaf Hering , Ian Jackson , Wei Liu , Juergen Gross Subject: [PATCH v20210616 07/36] tools: add sr_is_known_page_type to libsaverestore Date: Wed, 16 Jun 2021 14:51:00 +0200 Message-Id: <20210616125129.26563-8-olaf@aepfle.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210616125129.26563-1-olaf@aepfle.de> References: <20210616125129.26563-1-olaf@aepfle.de> MIME-Version: 1.0 Users of xc_get_pfn_type_batch may want to sanity check the data returned by Xen. Add a simple helper for this purpose. Signed-off-by: Olaf Hering v02: - rename xc_is_known_page_type to sr_is_known_page_type - move from ctrl/xc_private.h to saverestore/common.h (jgross) --- tools/libs/saverestore/common.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/tools/libs/saverestore/common.h b/tools/libs/saverestore/common.h index ca2eb47a4f..c9cc4206e5 100644 --- a/tools/libs/saverestore/common.h +++ b/tools/libs/saverestore/common.h @@ -467,6 +467,39 @@ int populate_pfns(struct xc_sr_context *ctx, unsigned int count, /* Handle a STATIC_DATA_END record. */ int handle_static_data_end(struct xc_sr_context *ctx); +/* Sanitiy check for types returned by Xen */ +static inline bool sr_is_known_page_type(xen_pfn_t type) +{ + bool ret; + + switch (type) + { + case XEN_DOMCTL_PFINFO_NOTAB: + + case XEN_DOMCTL_PFINFO_L1TAB: + case XEN_DOMCTL_PFINFO_L1TAB | XEN_DOMCTL_PFINFO_LPINTAB: + + case XEN_DOMCTL_PFINFO_L2TAB: + case XEN_DOMCTL_PFINFO_L2TAB | XEN_DOMCTL_PFINFO_LPINTAB: + + case XEN_DOMCTL_PFINFO_L3TAB: + case XEN_DOMCTL_PFINFO_L3TAB | XEN_DOMCTL_PFINFO_LPINTAB: + + case XEN_DOMCTL_PFINFO_L4TAB: + case XEN_DOMCTL_PFINFO_L4TAB | XEN_DOMCTL_PFINFO_LPINTAB: + + case XEN_DOMCTL_PFINFO_XTAB: + case XEN_DOMCTL_PFINFO_XALLOC: + case XEN_DOMCTL_PFINFO_BROKEN: + ret = true; + break; + default: + ret = false; + break; + } + return ret; +} + #endif /* * Local variables: