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Smith" To: xen-devel@lists.xenproject.org Cc: "Daniel P. Smith" , jason.andryuk@amd.com, christopher.w.clark@gmail.com, stefano.stabellini@amd.com, Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [PATCH v6 21/44] x86/boot: convert ramdisk locating to struct boot_module Date: Thu, 17 Oct 2024 13:03:01 -0400 Message-Id: <20241017170325.3842-22-dpsmith@apertussolutions.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20241017170325.3842-1-dpsmith@apertussolutions.com> References: <20241017170325.3842-1-dpsmith@apertussolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External X-ZohoMail-DKIM: pass (identity dpsmith@apertussolutions.com) X-ZM-MESSAGEID: 1729185448232116600 Content-Type: text/plain; charset="utf-8" Locate the first unclaimed struct boot_module and mark it as ramdisk. If th= ere are any remaining unclaimed struct boot_module instances, report to the console. In the change, the new boot module iterator is used to find the initrd index, which returns a signed int. Switch initrdidx from unsigned to signed. Signed-off-by: Daniel P. Smith Reviewed-by: Jason Andryuk --- Changes since v5: - adjusted initrdidx check for prior changes to boot module search function --- xen/arch/x86/setup.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c index a4ddcb908626..6ba8a893daf0 100644 --- a/xen/arch/x86/setup.c +++ b/xen/arch/x86/setup.c @@ -2083,16 +2083,23 @@ void asmlinkage __init noreturn __start_xen(unsigne= d long mbi_p) cpu_has_nx ? XENLOG_INFO : XENLOG_WARNING "Warning: ", cpu_has_nx ? "" : "not "); =20 - initrdidx =3D find_first_bit(module_map, bi->nr_modules); - if ( initrdidx < bi->nr_modules ) + /* + * At this point all capabilities that consume boot modules should have + * claimed their boot modules. Find the first unclaimed boot module and + * claim it as the initrd ramdisk. Do a second search to see if there = are + * any remaining unclaimed boot modules, and report them as unusued in= itrd + * candidates. + */ + initrdidx =3D first_boot_module_index(bi, BOOTMOD_UNKNOWN); + if ( initrdidx < MAX_NR_BOOTMODS ) { bi->mods[initrdidx].type =3D BOOTMOD_RAMDISK; bi->mods[initrdidx].flags |=3D BOOTMOD_FLAG_X86_CONSUMED; + if ( first_boot_module_index(bi, BOOTMOD_UNKNOWN) < MAX_NR_BOOTMOD= S ) + printk(XENLOG_WARNING + "Multiple initrd candidates, picking module #%u\n", + initrdidx); } - if ( bitmap_weight(module_map, bi->nr_modules) > 1 ) - printk(XENLOG_WARNING - "Multiple initrd candidates, picking module #%u\n", - initrdidx); =20 /* * We're going to setup domain0 using the module(s) that we stashed sa= fely --=20 2.30.2