linux-kernel - [PATCH v4 05/13] arm64/kexec: refactor for kernel/Kconfig.kexec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230705142004.3605799-6-eric.devolder@oracle.com>
Date:   Wed,  5 Jul 2023 10:19:56 -0400
From:   Eric DeVolder <eric.devolder@...cle.com>
To:     linux@...linux.org.uk, catalin.marinas@....com, will@...nel.org,
        chenhuacai@...nel.org, geert@...ux-m68k.org,
        tsbogend@...ha.franken.de, James.Bottomley@...senPartnership.com,
        deller@....de, ysato@...rs.sourceforge.jp, dalias@...c.org,
        glaubitz@...sik.fu-berlin.de, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, dave.hansen@...ux.intel.com, x86@...nel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-ia64@...r.kernel.org, loongarch@...ts.linux.dev,
        linux-m68k@...ts.linux-m68k.org, linux-mips@...r.kernel.org,
        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-sh@...r.kernel.org
Cc:     kernel@...0n.name, mpe@...erman.id.au, npiggin@...il.com,
        christophe.leroy@...roup.eu, paul.walmsley@...ive.com,
        palmer@...belt.com, aou@...s.berkeley.edu, hca@...ux.ibm.com,
        gor@...ux.ibm.com, agordeev@...ux.ibm.com,
        borntraeger@...ux.ibm.com, svens@...ux.ibm.com, hpa@...or.com,
        keescook@...omium.org, paulmck@...nel.org, peterz@...radead.org,
        frederic@...nel.org, akpm@...ux-foundation.org, ardb@...nel.org,
        samitolvanen@...gle.com, juerg.haefliger@...onical.com,
        arnd@...db.de, rmk+kernel@...linux.org.uk,
        linus.walleij@...aro.org, sebastian.reichel@...labora.com,
        rppt@...nel.org, kirill.shutemov@...ux.intel.com,
        anshuman.khandual@....com, ziy@...dia.com, masahiroy@...nel.org,
        ndesaulniers@...gle.com, mhiramat@...nel.org, ojeda@...nel.org,
        thunder.leizhen@...wei.com, xin3.li@...el.com, tj@...nel.org,
        gregkh@...uxfoundation.org, tsi@...oix.net, bhe@...hat.com,
        hbathini@...ux.ibm.com, sourabhjain@...ux.ibm.com,
        eric.devolder@...cle.com, boris.ostrovsky@...cle.com,
        konrad.wilk@...cle.com
Subject: [PATCH v4 05/13] arm64/kexec: refactor for kernel/Kconfig.kexec

The kexec and crash kernel options are provided in the common
kernel/Kconfig.kexec. Utilize the common options and provide
the ARCH_SUPPORTS_ and ARCH_SELECTS_ entries to recreate the
equivalent set of KEXEC and CRASH options.

Signed-off-by: Eric DeVolder <eric.devolder@...cle.com>
---
 arch/arm64/Kconfig | 62 +++++++++-------------------------------------
 1 file changed, 12 insertions(+), 50 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7856c3a3e35a..bc6c9ff85a77 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1459,60 +1459,22 @@ config PARAVIRT_TIME_ACCOUNTING
 
 	  If in doubt, say N here.
 
-config KEXEC
-	depends on PM_SLEEP_SMP
-	select KEXEC_CORE
-	bool "kexec system call"
-	help
-	  kexec is a system call that implements the ability to shutdown your
-	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is independent of the system firmware.   And like a reboot
-	  you can start any kernel with it, not just Linux.
-
-config KEXEC_FILE
-	bool "kexec file based system call"
-	select KEXEC_CORE
-	select HAVE_IMA_KEXEC if IMA
-	help
-	  This is new version of kexec system call. This system call is
-	  file based and takes file descriptors as system call argument
-	  for kernel and initramfs as opposed to list of segments as
-	  accepted by previous system call.
-
-config KEXEC_SIG
-	bool "Verify kernel signature during kexec_file_load() syscall"
-	depends on KEXEC_FILE
-	help
-	  Select this option to verify a signature with loaded kernel
-	  image. If configured, any attempt of loading a image without
-	  valid signature will fail.
-
-	  In addition to that option, you need to enable signature
-	  verification for the corresponding kernel image type being
-	  loaded in order for this to work.
+config ARCH_SUPPORTS_KEXEC
+	def_bool PM_SLEEP_SMP
 
-config KEXEC_IMAGE_VERIFY_SIG
-	bool "Enable Image signature verification support"
-	default y
-	depends on KEXEC_SIG
-	depends on EFI && SIGNED_PE_FILE_VERIFICATION
-	help
-	  Enable Image signature verification support.
+config ARCH_SUPPORTS_KEXEC_FILE
+	def_bool y
 
-comment "Support for PE file signature verification disabled"
-	depends on KEXEC_SIG
-	depends on !EFI || !SIGNED_PE_FILE_VERIFICATION
+config ARCH_SELECTS_KEXEC_FILE
+	def_bool y
+	depends on KEXEC_FILE
+	select HAVE_IMA_KEXEC if IMA
 
-config CRASH_DUMP
-	bool "Build kdump crash kernel"
-	help
-	  Generate crash dump after being started by kexec. This should
-	  be normally only set in special crash dump kernels which are
-	  loaded in the main kernel with kexec-tools into a specially
-	  reserved region and then later executed after a crash by
-	  kdump/kexec.
+config ARCH_DEFAULT_KEXEC_IMAGE_VERIFY_SIG
+	def_bool y
 
-	  For more details see Documentation/admin-guide/kdump/kdump.rst
+config ARCH_SUPPORTS_CRASH_DUMP
+	def_bool y
 
 config TRANS_TABLE
 	def_bool y
-- 
2.31.1