From: Ross Philipson <ross.philipson@oracle.com> To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, iommu@lists.linux-foundation.org, kexec@lists.infradead.org, linux-efi@vger.kernel.org Cc: ross.philipson@oracle.com, dpsmith@apertussolutions.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, ardb@kernel.org, mjg59@srcf.ucam.org, James.Bottomley@hansenpartnership.com, luto@amacapital.net, nivedita@alum.mit.edu, kanth.ghatraju@oracle.com, trenchboot-devel@googlegroups.com Subject: [PATCH v6 11/14] reboot: Secure Launch SEXIT support on reboot paths Date: Thu, 4 May 2023 14:50:20 +0000 [thread overview] Message-ID: <20230504145023.835096-12-ross.philipson@oracle.com> (raw) In-Reply-To: <20230504145023.835096-1-ross.philipson@oracle.com> If the MLE kernel is being powered off, rebooted or halted, then SEXIT must be called. Note that the SEXIT GETSEC leaf can only be called after a machine_shutdown() has been done on these paths. The machine_shutdown() is not called on a few paths like when poweroff action does not have a poweroff callback (into ACPI code) or when an emergency reset is done. In these cases, just the TXT registers are finalized but SEXIT is skipped. Signed-off-by: Ross Philipson <ross.philipson@oracle.com> --- arch/x86/kernel/reboot.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 3adbe97..732c81b 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -12,6 +12,7 @@ #include <linux/delay.h> #include <linux/objtool.h> #include <linux/pgtable.h> +#include <linux/slaunch.h> #include <acpi/reboot.h> #include <asm/io.h> #include <asm/apic.h> @@ -720,6 +721,7 @@ static void native_machine_restart(char *__unused) if (!reboot_force) machine_shutdown(); + slaunch_finalize(!reboot_force); __machine_emergency_restart(0); } @@ -730,6 +732,9 @@ static void native_machine_halt(void) tboot_shutdown(TB_SHUTDOWN_HALT); + /* SEXIT done after machine_shutdown() to meet TXT requirements */ + slaunch_finalize(1); + stop_this_cpu(NULL); } @@ -738,8 +743,12 @@ static void native_machine_power_off(void) if (kernel_can_power_off()) { if (!reboot_force) machine_shutdown(); + slaunch_finalize(!reboot_force); do_kernel_power_off(); + } else { + slaunch_finalize(0); } + /* A fallback in case there is no PM info available */ tboot_shutdown(TB_SHUTDOWN_HALT); } @@ -767,6 +776,7 @@ void machine_shutdown(void) void machine_emergency_restart(void) { + slaunch_finalize(0); __machine_emergency_restart(1); } -- 1.8.3.1 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec
WARNING: multiple messages have this Message-ID (diff)
From: Ross Philipson <ross.philipson@oracle.com> To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, iommu@lists.linux-foundation.org, kexec@lists.infradead.org, linux-efi@vger.kernel.org Cc: ross.philipson@oracle.com, dpsmith@apertussolutions.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, ardb@kernel.org, mjg59@srcf.ucam.org, James.Bottomley@hansenpartnership.com, luto@amacapital.net, nivedita@alum.mit.edu, kanth.ghatraju@oracle.com, trenchboot-devel@googlegroups.com Subject: [PATCH v6 11/14] reboot: Secure Launch SEXIT support on reboot paths Date: Thu, 4 May 2023 14:50:20 +0000 [thread overview] Message-ID: <20230504145023.835096-12-ross.philipson@oracle.com> (raw) In-Reply-To: <20230504145023.835096-1-ross.philipson@oracle.com> If the MLE kernel is being powered off, rebooted or halted, then SEXIT must be called. Note that the SEXIT GETSEC leaf can only be called after a machine_shutdown() has been done on these paths. The machine_shutdown() is not called on a few paths like when poweroff action does not have a poweroff callback (into ACPI code) or when an emergency reset is done. In these cases, just the TXT registers are finalized but SEXIT is skipped. Signed-off-by: Ross Philipson <ross.philipson@oracle.com> --- arch/x86/kernel/reboot.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c index 3adbe97..732c81b 100644 --- a/arch/x86/kernel/reboot.c +++ b/arch/x86/kernel/reboot.c @@ -12,6 +12,7 @@ #include <linux/delay.h> #include <linux/objtool.h> #include <linux/pgtable.h> +#include <linux/slaunch.h> #include <acpi/reboot.h> #include <asm/io.h> #include <asm/apic.h> @@ -720,6 +721,7 @@ static void native_machine_restart(char *__unused) if (!reboot_force) machine_shutdown(); + slaunch_finalize(!reboot_force); __machine_emergency_restart(0); } @@ -730,6 +732,9 @@ static void native_machine_halt(void) tboot_shutdown(TB_SHUTDOWN_HALT); + /* SEXIT done after machine_shutdown() to meet TXT requirements */ + slaunch_finalize(1); + stop_this_cpu(NULL); } @@ -738,8 +743,12 @@ static void native_machine_power_off(void) if (kernel_can_power_off()) { if (!reboot_force) machine_shutdown(); + slaunch_finalize(!reboot_force); do_kernel_power_off(); + } else { + slaunch_finalize(0); } + /* A fallback in case there is no PM info available */ tboot_shutdown(TB_SHUTDOWN_HALT); } @@ -767,6 +776,7 @@ void machine_shutdown(void) void machine_emergency_restart(void) { + slaunch_finalize(0); __machine_emergency_restart(1); } -- 1.8.3.1
next prev parent reply other threads:[~2023-05-04 14:51 UTC|newest] Thread overview: 200+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-05-04 14:50 [PATCH v6 00/14] x86: Trenchboot secure dynamic launch Linux kernel support Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-04 14:50 ` [PATCH v6 01/14] x86/boot: Place kernel_info at a fixed offset Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-04 14:50 ` [PATCH v6 02/14] Documentation/x86: Secure Launch kernel documentation Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 16:19 ` Simon Horman 2023-05-05 16:19 ` Simon Horman 2023-05-05 17:32 ` Ross Philipson 2023-05-05 17:32 ` Ross Philipson 2023-05-06 8:48 ` Bagas Sanjaya 2023-05-06 8:48 ` Bagas Sanjaya 2023-05-10 15:41 ` Ross Philipson 2023-05-10 15:41 ` Ross Philipson 2023-05-12 10:47 ` Matthew Garrett 2023-05-12 10:47 ` Matthew Garrett 2023-06-16 16:44 ` Daniel P. Smith 2023-06-16 16:44 ` Daniel P. Smith 2023-06-16 16:54 ` Matthew Garrett 2023-06-16 16:54 ` Matthew Garrett 2023-06-16 18:21 ` Daniel P. Smith 2023-06-16 18:21 ` Daniel P. Smith 2023-05-12 13:19 ` Thomas Gleixner 2023-05-12 13:19 ` Thomas Gleixner 2023-05-04 14:50 ` [PATCH v6 03/14] x86: Secure Launch Kconfig Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-04 14:50 ` [PATCH v6 04/14] x86: Secure Launch Resource Table header file Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 16:22 ` Simon Horman 2023-05-05 16:22 ` Simon Horman 2023-05-05 17:34 ` Ross Philipson 2023-05-05 17:34 ` Ross Philipson 2023-05-10 23:04 ` Jarkko Sakkinen 2023-05-10 23:04 ` Jarkko Sakkinen 2023-05-15 20:58 ` Daniel P. Smith 2023-05-15 20:58 ` Daniel P. Smith 2023-05-12 10:55 ` Matthew Garrett 2023-05-12 10:55 ` Matthew Garrett 2023-05-15 21:15 ` Daniel P. Smith 2023-05-15 21:15 ` Daniel P. Smith 2023-05-15 21:22 ` Matthew Garrett 2023-05-15 21:22 ` Matthew Garrett 2023-05-16 0:41 ` Daniel P. Smith 2023-05-16 0:41 ` Daniel P. Smith 2023-05-16 1:43 ` Matthew Garrett 2023-05-16 1:43 ` Matthew Garrett 2023-06-16 20:01 ` Daniel P. Smith 2023-06-16 20:01 ` Daniel P. Smith 2023-06-16 20:15 ` Matthew Garrett 2023-06-16 20:15 ` Matthew Garrett 2023-07-07 19:31 ` Daniel P. Smith 2023-07-07 19:31 ` Daniel P. Smith 2023-05-04 14:50 ` [PATCH v6 05/14] x86: Secure Launch main " Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 16:25 ` Simon Horman 2023-05-05 16:25 ` Simon Horman 2023-05-05 17:37 ` Ross Philipson 2023-05-05 17:37 ` Ross Philipson 2023-05-12 11:00 ` Matthew Garrett 2023-05-12 11:00 ` Matthew Garrett 2023-05-12 16:10 ` Ross Philipson 2023-05-12 16:10 ` Ross Philipson 2023-10-31 21:37 ` ross.philipson 2023-10-31 21:37 ` ross.philipson 2023-05-04 14:50 ` [PATCH v6 06/14] x86: Add early SHA support for Secure Launch early measurements Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 16:34 ` Simon Horman 2023-05-05 16:34 ` Simon Horman 2023-05-09 16:09 ` Daniel P. Smith 2023-05-09 16:09 ` Daniel P. Smith 2023-05-10 1:21 ` Eric Biggers 2023-05-10 1:21 ` Eric Biggers 2023-05-10 22:28 ` Jarkko Sakkinen 2023-05-10 22:28 ` Jarkko Sakkinen 2023-05-12 11:04 ` Matthew Garrett 2023-05-12 11:04 ` Matthew Garrett 2023-05-12 11:18 ` Ard Biesheuvel 2023-05-12 11:18 ` Ard Biesheuvel 2023-05-12 11:28 ` Matthew Garrett 2023-05-12 11:28 ` Matthew Garrett 2023-05-12 11:58 ` Ard Biesheuvel 2023-05-12 11:58 ` Ard Biesheuvel 2023-05-12 12:24 ` Andrew Cooper 2023-05-12 12:24 ` Andrew Cooper 2023-05-14 18:18 ` Eric Biggers 2023-05-14 18:18 ` Eric Biggers 2023-05-14 19:11 ` Matthew Garrett 2023-05-14 19:11 ` Matthew Garrett 2023-05-12 13:24 ` Thomas Gleixner 2023-05-12 13:24 ` Thomas Gleixner 2023-05-12 16:13 ` Matthew Garrett 2023-05-12 16:13 ` Matthew Garrett 2023-05-12 18:17 ` Thomas Gleixner 2023-05-12 18:17 ` Thomas Gleixner 2023-05-12 19:12 ` Matthew Garrett 2023-05-12 19:12 ` Matthew Garrett 2023-05-12 19:42 ` Andrew Cooper 2023-05-12 19:42 ` Andrew Cooper 2023-05-15 21:23 ` Daniel P. Smith 2023-05-15 21:23 ` Daniel P. Smith 2023-05-11 3:33 ` Herbert Xu 2023-05-11 3:33 ` Herbert Xu 2023-05-16 0:50 ` Daniel P. Smith 2023-05-16 0:50 ` Daniel P. Smith 2023-05-04 14:50 ` [PATCH v6 07/14] x86: Secure Launch kernel early boot stub Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 17:47 ` Simon Horman 2023-05-05 17:47 ` Simon Horman 2023-05-05 18:58 ` Ross Philipson 2023-05-05 18:58 ` Ross Philipson 2023-05-05 19:46 ` Simon Horman 2023-05-05 19:46 ` Simon Horman 2023-05-12 11:26 ` Matthew Garrett 2023-05-12 11:26 ` Matthew Garrett 2023-05-12 16:17 ` Ross Philipson 2023-05-12 16:17 ` Ross Philipson 2023-05-12 16:27 ` Matthew Garrett 2023-05-12 16:27 ` Matthew Garrett 2023-05-16 1:11 ` Daniel P. Smith 2023-05-16 1:11 ` Daniel P. Smith 2023-05-16 1:45 ` Matthew Garrett 2023-05-16 1:45 ` Matthew Garrett 2023-06-15 18:00 ` Ross Philipson 2023-06-15 18:00 ` Ross Philipson 2023-05-12 18:04 ` Thomas Gleixner 2023-05-12 18:04 ` Thomas Gleixner 2023-05-15 20:13 ` Ross Philipson 2023-05-15 20:13 ` Ross Philipson 2023-09-20 21:40 ` ross.philipson 2023-09-20 21:40 ` ross.philipson 2023-05-04 14:50 ` [PATCH v6 08/14] x86: Secure Launch kernel late " Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 17:52 ` Simon Horman 2023-05-05 17:52 ` Simon Horman 2023-05-05 18:59 ` Ross Philipson 2023-05-05 18:59 ` Ross Philipson 2023-05-10 23:02 ` Jarkko Sakkinen 2023-05-10 23:02 ` Jarkko Sakkinen 2023-05-12 15:58 ` Ross Philipson 2023-05-12 15:58 ` Ross Philipson 2023-05-24 2:55 ` Jarkko Sakkinen 2023-05-24 2:55 ` Jarkko Sakkinen 2023-05-12 15:44 ` Thomas Gleixner 2023-05-12 15:44 ` Thomas Gleixner 2023-05-15 20:06 ` Ross Philipson 2023-05-15 20:06 ` Ross Philipson 2023-05-04 14:50 ` [PATCH v6 09/14] x86: Secure Launch SMP bringup support Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 17:54 ` Simon Horman 2023-05-05 17:54 ` Simon Horman 2023-05-05 18:59 ` Ross Philipson 2023-05-05 18:59 ` Ross Philipson 2023-05-10 22:55 ` Jarkko Sakkinen 2023-05-10 22:55 ` Jarkko Sakkinen 2023-05-11 16:21 ` Ross Philipson 2023-05-11 16:21 ` Ross Philipson 2023-05-12 18:02 ` Thomas Gleixner 2023-05-12 18:02 ` Thomas Gleixner 2023-05-15 20:19 ` Ross Philipson 2023-05-15 20:19 ` Ross Philipson 2023-05-04 14:50 ` [PATCH v6 10/14] kexec: Secure Launch kexec SEXIT support Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-04 14:50 ` Ross Philipson [this message] 2023-05-04 14:50 ` [PATCH v6 11/14] reboot: Secure Launch SEXIT support on reboot paths Ross Philipson 2023-05-12 11:40 ` Matthew Garrett 2023-05-12 11:40 ` Matthew Garrett 2023-05-15 18:16 ` Ross Philipson 2023-05-15 18:16 ` Ross Philipson 2023-05-16 1:23 ` Daniel P. Smith 2023-05-16 1:23 ` Daniel P. Smith 2023-05-04 14:50 ` [PATCH v6 12/14] x86: Secure Launch late initcall platform module Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 19:42 ` Simon Horman 2023-05-05 19:42 ` Simon Horman 2023-05-08 15:07 ` Ross Philipson 2023-05-08 15:07 ` Ross Philipson 2023-05-10 22:39 ` Jarkko Sakkinen 2023-05-10 22:39 ` Jarkko Sakkinen 2023-05-12 15:53 ` Ross Philipson 2023-05-12 15:53 ` Ross Philipson 2023-05-10 22:40 ` Jarkko Sakkinen 2023-05-10 22:40 ` Jarkko Sakkinen 2023-05-12 15:54 ` Ross Philipson 2023-05-12 15:54 ` Ross Philipson 2023-05-04 14:50 ` [PATCH v6 13/14] tpm: Allow locality 2 to be set when initializing the TPM for Secure Launch Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-12 11:43 ` Matthew Garrett 2023-05-12 11:43 ` Matthew Garrett 2023-05-12 16:22 ` Ross Philipson 2023-05-12 16:22 ` Ross Philipson 2023-05-16 1:37 ` Daniel P. Smith 2023-05-16 1:37 ` Daniel P. Smith 2023-05-04 14:50 ` [PATCH v6 14/14] x86: EFI stub DRTM launch support " Ross Philipson 2023-05-04 14:50 ` Ross Philipson 2023-05-05 8:39 ` [PATCH v6 00/14] x86: Trenchboot secure dynamic launch Linux kernel support Bagas Sanjaya 2023-05-05 8:39 ` Bagas Sanjaya 2023-05-05 15:45 ` Ross Philipson 2023-05-05 15:45 ` Ross Philipson 2023-05-06 7:56 ` Bagas Sanjaya 2023-05-06 7:56 ` Bagas Sanjaya
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