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Smith" To: xen-devel@lists.xenproject.org Cc: "Daniel P. Smith" , jason.andryuk@amd.com, christopher.w.clark@gmail.com, Jan Beulich , Andrew Cooper , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= Subject: [PATCH v4 14/44] x86/boot: transition relocation calculations to struct boot_module Date: Fri, 30 Aug 2024 17:46:59 -0400 Message-Id: <20240830214730.1621-15-dpsmith@apertussolutions.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20240830214730.1621-1-dpsmith@apertussolutions.com> References: <20240830214730.1621-1-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: 1725055007243116600 Content-Type: text/plain; charset="utf-8" Use struct boot_module fields, start and size, when calculating the relocat= ion address and size. It also ensures that early_mod references are kept in syn= c. Signed-off-by: Daniel P. Smith --- xen/arch/x86/setup.c | 33 +++++++++++++++------------------ 1 file changed, 15 insertions(+), 18 deletions(-) diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c index 27517d24b2ea..0b6bde9ce7e3 100644 --- a/xen/arch/x86/setup.c +++ b/xen/arch/x86/setup.c @@ -1504,7 +1504,7 @@ void asmlinkage __init noreturn __start_xen(unsigned = long mbi_p) struct boot_module *bm =3D &boot_info->mods[j]; unsigned long size; =20 - size =3D PAGE_ALIGN(bm->headroom + bm->early_mod->mod_end); + size =3D PAGE_ALIGN(bm->headroom + bm->size); =20 if ( boot_info->mods[j].flags & BOOTMOD_FLAG_X86_RELOCATED ) continue; @@ -1518,13 +1518,12 @@ void asmlinkage __init noreturn __start_xen(unsigne= d long mbi_p) =20 if ( s < end && (bm->headroom || - ((end - size) >> PAGE_SHIFT) > bm->early_mod->mod_start)= ) + paddr_to_pfn(end - size) > paddr_to_pfn(bm->start)) ) { - move_memory(end - size + bm->headroom, - (uint64_t)bm->early_mod->mod_start << PAGE_SHI= FT, - bm->early_mod->mod_end); - bm->early_mod->mod_start =3D (end - size) >> PAGE_SHIFT; - bm->early_mod->mod_end +=3D bm->headroom; + move_memory(end - size + bm->headroom, bm->start, bm->size= ); + bm->start =3D (end - size); + bm->early_mod->mod_start =3D paddr_to_pfn(bm->start); + bm->size =3D bm->early_mod->mod_end +=3D bm->headroom; bm->flags |=3D BOOTMOD_FLAG_X86_RELOCATED; } } @@ -1556,11 +1555,10 @@ void asmlinkage __init noreturn __start_xen(unsigne= d long mbi_p) panic("Not enough memory to relocate the dom0 kernel image\n"); for ( i =3D 0; i < boot_info->nr_mods; ++i ) { - uint64_t s =3D (uint64_t)boot_info->mods[i].early_mod->mod_start - << PAGE_SHIFT; + uint64_t s =3D (uint64_t)boot_info->mods[i].start; =20 reserve_e820_ram(&boot_e820, s, - s + PAGE_ALIGN(boot_info->mods[i].early_mod->mod_= end)); + s + PAGE_ALIGN(boot_info->mods[i].size)); } =20 if ( !xen_phys_start ) @@ -1638,9 +1636,8 @@ void asmlinkage __init noreturn __start_xen(unsigned = long mbi_p) map_e =3D boot_e820.map[j].addr + boot_e820.map[j].size; for ( j =3D 0; j < boot_info->nr_mods; ++j ) { - uint64_t end =3D pfn_to_paddr( - boot_info->mods[j].early_mod->mod_start= ) + - boot_info->mods[j].early_mod->mod_end; + uint64_t end =3D boot_info->mods[j].start + + boot_info->mods[j].size; =20 if ( map_e < end ) map_e =3D end; @@ -1714,13 +1711,13 @@ void asmlinkage __init noreturn __start_xen(unsigne= d long mbi_p) =20 for ( i =3D 0; i < boot_info->nr_mods; ++i ) { - set_pdx_range(boot_info->mods[i].early_mod->mod_start, - boot_info->mods[i].early_mod->mod_start + + set_pdx_range(paddr_to_pfn(boot_info->mods[i].start), + paddr_to_pfn(boot_info->mods[i].start) + PFN_UP(boot_info->mods[i].early_mod->mod_end)); map_pages_to_xen( - (unsigned long)mfn_to_virt(boot_info->mods[i].early_mod->mod_s= tart), - _mfn(boot_info->mods[i].early_mod->mod_start), - PFN_UP(boot_info->mods[i].early_mod->mod_end), PAGE_HYPERVISOR= ); + (unsigned long)maddr_to_virt(boot_info->mods[i].start), + maddr_to_mfn(boot_info->mods[i].start), + PFN_UP(boot_info->mods[i].size), PAGE_HYPERVISOR); } =20 #ifdef CONFIG_KEXEC --=20 2.30.2