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bh=CuqCxukAEpPEZu8tBseimenOnd4UdwA3oGVYBaKS/xI=; b=fkMu09vEWcwInWDIZsXOfmQKXrLAYqtayIUXN2/72ZwXONSHgXsp/sF2 Wpo/YZfa+CQ6hpOHhxNR0FBrsljgW3Tn23RNef6YJF+iDwhlN6kgq+sUp 5Aa9WHNK1m9LW97zYBauMB+mbE3BOJSIAV7oTmxAw9lQ859qB+Zm5WGrf A=; Authentication-Results: esa1.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: jiN/OOdM2xnlx3gY/d/CG7XM8wTwfwWvWPS+MAsXL7Gm3No1PHOeUaWSWb0Mq1AOpYGW8rSTSl msxvTpSLcyY1biRw+UdnZRFI8AoDD/OdqXqEwz119JxX/VeoSXOLDBzrhiar5/IU62az87wY7Z /Jf5HLScEpAuACqzJESHnjK7f/jIWlIFYyO3vVVFCR3UjDBPCB2jqw1vU8briqHE+95FZjCOXz Fkx81lk7h8Hpb2hyc9V1mhDx1Rl6ve09aZ/iGqCts+NOsjvSTxMuIEM2skmnvZSGLnn+Y4zods XW4= X-SBRS: 5.1 X-MesageID: 47973428 X-Ironport-Server: esa1.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED IronPort-HdrOrdr: A9a23:3JsuValfXQZvYwm7I6hXzZdos+/pDfIo3DAbv31ZSRFFG/Fxl6 iV/cjztCWE8Ar5N0tQ+uxoVJPufZqYz+8Q3WBzB8baYOCFghrLEGgK1+KLqFeMdxEWtNQtsp uIG5IObuEYZmIbsS+V2meF+q4bsby6zJw= X-IronPort-AV: E=Sophos;i="5.83,326,1616472000"; d="scan'208";a="47973428" From: Andrew Cooper To: Xen-devel CC: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?= , Olaf Hering , "Juergen Gross" , Ian Jackson , Wei Liu Subject: [PATCH 5/5] tools/migration: unify type checking for data pfns in migration stream Date: Mon, 5 Jul 2021 20:10:27 +0100 Message-ID: <20210705191027.15107-6-andrew.cooper3@citrix.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20210705191027.15107-1-andrew.cooper3@citrix.com> References: <20210705191027.15107-1-andrew.cooper3@citrix.com> MIME-Version: 1.0 X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1625512290239100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Olaf Hering Introduce a helper which decides if a given pfn type has data in the migration stream. No change in behaviour intended, except for invalid page types which now have a safer default. Signed-off-by: Olaf Hering --- tools/libs/guest/xg_sr_common.h | 27 +++++++++++++++++++++++++++ tools/libs/guest/xg_sr_restore.c | 29 +++-------------------------- tools/libs/guest/xg_sr_save.c | 14 ++------------ 3 files changed, 32 insertions(+), 38 deletions(-) diff --git a/tools/libs/guest/xg_sr_common.h b/tools/libs/guest/xg_sr_commo= n.h index 7f4b0439f6bd..36d45ef56fb8 100644 --- a/tools/libs/guest/xg_sr_common.h +++ b/tools/libs/guest/xg_sr_common.h @@ -513,6 +513,33 @@ static inline bool page_type_to_populate(uint32_t type) } } =20 +static inline bool page_type_has_stream_data(uint32_t type) +{ + 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: + return true; + + case XEN_DOMCTL_PFINFO_XTAB: + case XEN_DOMCTL_PFINFO_BROKEN: + case XEN_DOMCTL_PFINFO_XALLOC: + default: + return false; + } +} + #endif /* * Local variables: diff --git a/tools/libs/guest/xg_sr_restore.c b/tools/libs/guest/xg_sr_rest= ore.c index 3d63442d4537..aa4113d7f679 100644 --- a/tools/libs/guest/xg_sr_restore.c +++ b/tools/libs/guest/xg_sr_restore.c @@ -231,25 +231,8 @@ static int process_page_data(struct xc_sr_context *ctx= , unsigned int count, { ctx->restore.ops.set_page_type(ctx, pfns[i], types[i]); =20 - switch ( types[i] ) - { - 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: - + if ( page_type_has_stream_data(types[i]) ) mfns[nr_pages++] =3D ctx->restore.ops.pfn_to_gfn(ctx, pfns[i]); - break; - } } =20 /* Nothing to do? */ @@ -269,14 +252,8 @@ static int process_page_data(struct xc_sr_context *ctx= , unsigned int count, =20 for ( i =3D 0, j =3D 0; i < count; ++i ) { - switch ( types[i] ) - { - case XEN_DOMCTL_PFINFO_XTAB: - case XEN_DOMCTL_PFINFO_BROKEN: - case XEN_DOMCTL_PFINFO_XALLOC: - /* No page data to deal with. */ + if ( !page_type_has_stream_data(types[i]) ) continue; - } =20 if ( map_errs[j] ) { @@ -411,7 +388,7 @@ static int handle_page_data(struct xc_sr_context *ctx, = struct xc_sr_record *rec) goto err; } =20 - if ( type < XEN_DOMCTL_PFINFO_BROKEN ) + if ( page_type_has_stream_data(type) ) /* NOTAB and all L1 through L4 tables (including pinned) should * have a page worth of data in the record. */ pages_of_data++; diff --git a/tools/libs/guest/xg_sr_save.c b/tools/libs/guest/xg_sr_save.c index c84a073e86f4..3fce41b6cfff 100644 --- a/tools/libs/guest/xg_sr_save.c +++ b/tools/libs/guest/xg_sr_save.c @@ -153,13 +153,8 @@ static int write_batch(struct xc_sr_context *ctx) goto err; } =20 - switch ( types[i] ) - { - case XEN_DOMCTL_PFINFO_BROKEN: - case XEN_DOMCTL_PFINFO_XALLOC: - case XEN_DOMCTL_PFINFO_XTAB: + if ( !page_type_has_stream_data(types[i]) ) continue; - } =20 mfns[nr_pages++] =3D mfns[i]; } @@ -177,13 +172,8 @@ static int write_batch(struct xc_sr_context *ctx) =20 for ( i =3D 0, p =3D 0; i < nr_pfns; ++i ) { - switch ( types[i] ) - { - case XEN_DOMCTL_PFINFO_BROKEN: - case XEN_DOMCTL_PFINFO_XALLOC: - case XEN_DOMCTL_PFINFO_XTAB: + if ( !page_type_has_stream_data(types[i]) ) continue; - } =20 if ( errors[p] ) { --=20 2.11.0