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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 v7 07/38] x86/boot: add start and size fields to struct boot_module Date: Sun, 20 Oct 2024 20:45:42 -0400 Message-Id: <20241021004613.18793-8-dpsmith@apertussolutions.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20241021004613.18793-1-dpsmith@apertussolutions.com> References: <20241021004613.18793-1-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: 1729472269681116600 Content-Type: text/plain; charset="utf-8" This commit introduces the start and size fields to struct boot_module and assigns their value during boot_info construction. The EFI entry point is a special case, as the EFI file loading boot service= may load a file beyond the 4G barrier. As a result, to make the address fit in = the 32bit integer used by the MB1 module_t structure, the frame number is store= d in mod_start and size in mod_end. Until the EFI entry point is enlightened to = work with boot_info and boot_module, multiboot_fill_boot_info will handle the alternate values in mod_start and mod_end when EFI is detected. Signed-off-by: Daniel P. Smith --- Changes since v6: - put the efi conversion for mod_start and mod_end back along with check - dropped unnecessary cast - updated the population of start and size fields to take into account efi Changes since v5: - switched EFI population of mod_start/mod_end to addresses --- xen/arch/x86/include/asm/bootinfo.h | 3 +++ xen/arch/x86/setup.c | 15 +++++++++++++++ 2 files changed, 18 insertions(+) diff --git a/xen/arch/x86/include/asm/bootinfo.h b/xen/arch/x86/include/asm= /bootinfo.h index e8fba66eedc5..dbd22db3d063 100644 --- a/xen/arch/x86/include/asm/bootinfo.h +++ b/xen/arch/x86/include/asm/bootinfo.h @@ -46,6 +46,9 @@ struct boot_module { * relocated: indicates module has been relocated in memory. */ bool relocated:1; + + paddr_t start; + size_t size; }; =20 /* diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c index 17f74384b5c1..2e87aa314389 100644 --- a/xen/arch/x86/setup.c +++ b/xen/arch/x86/setup.c @@ -315,10 +315,25 @@ static struct boot_info *__init multiboot_fill_boot_i= nfo(unsigned long mbi_p) * reserved for Xen. */ for ( i =3D 0; i < MAX_NR_BOOTMODS && i < bi->nr_modules; i++ ) + { bi->mods[i].mod =3D &mods[i]; =20 + if ( !efi_enabled(EFI_LOADER) ) + { + bi->mods[i].start =3D mods[i].mod_start; + bi->mods[i].size =3D mods[i].mod_end - mods[i].mod_start; + } + else + { + bi->mods[i].start =3D pfn_to_paddr(mods[i].mod_start); + bi->mods[i].size =3D mods[i].mod_end; + } + } + /* Variable 'i' should be one entry past the last module. */ bi->mods[i].mod =3D &mods[bi->nr_modules]; + bi->mods[i].start =3D mods[i].mod_start; + bi->mods[i].size =3D mods[i].mod_end - mods[i].mod_start; bi->mods[i].type =3D BOOTMOD_XEN; =20 return bi; --=20 2.30.2