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none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1751444004; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=5VnYHbx1b6eDsCfttQs09iHQOMBpidE1KzK0WuvNpBs=; b=vL3SEcPq59eEcqZuqsFbJBUOR5FdYogFa5pKE5Q3JhCLZT6VYIOVWy2XzUwcj5+h0hp7gJ L0aVBwHLe4I7kyICD42dTKnl8fJHxO1nUgIB07+XPsnMHlMgfVdvhtIVjMOPLXeg6T3l+E AZVGYxfTux4fGdvcAC8saU/udBlJL6Y= From: Juergen Gross To: xen-devel@lists.xenproject.org Cc: Juergen Gross , Julien Grall , Anthony PERARD Subject: [PATCH 2/9] tools/xenstore: perform kexec for stubdom live update Date: Wed, 2 Jul 2025 10:12:58 +0200 Message-ID: <20250702081305.14440-3-jgross@suse.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250702081305.14440-1-jgross@suse.com> References: <20250702081305.14440-1-jgross@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Flag: NO X-Spam-Score: -6.80 X-Spamd-Result: default: False [-6.80 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; ARC_NA(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.com:mid,suse.com:email] X-Spam-Level: X-ZohoMail-DKIM: pass (identity @suse.com) X-ZM-MESSAGEID: 1751444472780116600 Content-Type: text/plain; charset="utf-8" For the final step of live-update in stubdom, call kexec(). Signed-off-by: Juergen Gross Reviewed-by: Jason Andryuk --- tools/xenstored/lu_minios.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) diff --git a/tools/xenstored/lu_minios.c b/tools/xenstored/lu_minios.c index b14a0b29d5..b8ca631610 100644 --- a/tools/xenstored/lu_minios.c +++ b/tools/xenstored/lu_minios.c @@ -8,13 +8,44 @@ #include #include =20 +#include + #include "talloc.h" #include "lu.h" +#include "core.h" =20 #ifndef NO_LIVE_UPDATE char *lu_exec(const void *ctx, int argc, char **argv) { - return "NYI"; + int i; + int ret; + char *errbuf; + char *cmdline; + + if (!lu_status->kernel) + return "No new kernel"; + + cmdline =3D talloc_strdup(ctx, ""); + if (!cmdline) + return "Allocation failure"; + for (i =3D 1; argv[i]; i++) { + if (i > 1) { + cmdline =3D talloc_append_string(ctx, cmdline, " "); + if (!cmdline) + return "Allocation failure"; + } + cmdline =3D talloc_append_string(ctx, cmdline, argv[i]); + if (!cmdline) + return "Allocation failure"; + } + + ret =3D kexec(lu_status->kernel, lu_status->kernel_size, cmdline); + + errbuf =3D talloc_asprintf(ctx, "kexec() returned %d", ret); + if (!errbuf) + errbuf =3D "kexec() returned"; + + return errbuf; } =20 static const char *lu_binary_alloc(const void *ctx, struct connection *con= n, --=20 2.43.0