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Message-ID: <175808979526.709179.11091367370830515282.tip-bot2@tip-bot2> Date: Wed, 17 Sep 2025 06:16:35 -0000 From: "tip-bot2 for Thomas Gleixner" <tip-bot2@...utronix.de> To: linux-tip-commits@...r.kernel.org Cc: Thomas Gleixner <tglx@...utronix.de>, Heiko Carstens <hca@...ux.ibm.com>, x86@...nel.org, linux-kernel@...r.kernel.org Subject: [tip: core/core] s390: Use generic TIF bits The following commit has been merged into the core/core branch of tip: Commit-ID: 06e5b72858b168fcedb0402b8dfdb896276fc08e Gitweb: https://git.kernel.org/tip/06e5b72858b168fcedb0402b8dfdb896276fc08e Author: Thomas Gleixner <tglx@...utronix.de> AuthorDate: Mon, 08 Sep 2025 23:32:34 +02:00 Committer: Thomas Gleixner <tglx@...utronix.de> CommitterDate: Wed, 17 Sep 2025 08:14:04 +02:00 s390: Use generic TIF bits No point in defining generic items and the upcoming RSEQ optimizations are only available with this _and_ the generic entry infrastructure, which is already used by s390. So no further action required here. This leaves a comment about the AUDIT/TRACE/SECCOMP bits which are handled by SYSCALL_WORK in the generic code, so they seem redundant, but that's a problem for the s390 wizards to think about. Signed-off-by: Thomas Gleixner <tglx@...utronix.de> Acked-by: Heiko Carstens <hca@...ux.ibm.com> --- arch/s390/Kconfig | 1 +- arch/s390/include/asm/thread_info.h | 44 +++++++++++----------------- 2 files changed, 19 insertions(+), 26 deletions(-) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index bf680c2..f991ab9 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -199,6 +199,7 @@ config S390 select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_EBPF_JIT if HAVE_MARCH_Z196_FEATURES select HAVE_EFFICIENT_UNALIGNED_ACCESS + select HAVE_GENERIC_TIF_BITS select HAVE_GUP_FAST select HAVE_FENTRY select HAVE_FTRACE_GRAPH_FUNC diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h index f6ed2c8..fe6da06 100644 --- a/arch/s390/include/asm/thread_info.h +++ b/arch/s390/include/asm/thread_info.h @@ -56,43 +56,35 @@ void arch_setup_new_exec(void); /* * thread information flags bit numbers + * + * Tell the generic TIF infrastructure which special bits s390 supports */ -#define TIF_NOTIFY_RESUME 0 /* callback before returning to user */ -#define TIF_SIGPENDING 1 /* signal pending */ -#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_NEED_RESCHED_LAZY 3 /* lazy rescheduling needed */ -#define TIF_UPROBE 4 /* breakpointed or single-stepping */ -#define TIF_PATCH_PENDING 5 /* pending live patching update */ -#define TIF_ASCE_PRIMARY 6 /* primary asce is kernel asce */ -#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */ -#define TIF_GUARDED_STORAGE 8 /* load guarded storage control block */ -#define TIF_ISOLATE_BP_GUEST 9 /* Run KVM guests with isolated BP */ -#define TIF_PER_TRAP 10 /* Need to handle PER trap on exit to usermode */ -#define TIF_31BIT 16 /* 32bit process */ -#define TIF_MEMDIE 17 /* is terminating due to OOM killer */ -#define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */ -#define TIF_SINGLE_STEP 19 /* This task is single stepped */ -#define TIF_BLOCK_STEP 20 /* This task is block stepped */ -#define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */ +#define HAVE_TIF_NEED_RESCHED_LAZY +#define HAVE_TIF_RESTORE_SIGMASK + +#include <asm-generic/thread_info_tif.h> + +/* Architecture specific bits */ +#define TIF_ASCE_PRIMARY 16 /* primary asce is kernel asce */ +#define TIF_GUARDED_STORAGE 17 /* load guarded storage control block */ +#define TIF_ISOLATE_BP_GUEST 18 /* Run KVM guests with isolated BP */ +#define TIF_PER_TRAP 19 /* Need to handle PER trap on exit to usermode */ +#define TIF_31BIT 20 /* 32bit process */ +#define TIF_SINGLE_STEP 21 /* This task is single stepped */ +#define TIF_BLOCK_STEP 22 /* This task is block stepped */ +#define TIF_UPROBE_SINGLESTEP 23 /* This task is uprobe single stepped */ + +/* These could move over to SYSCALL_WORK bits, no? */ #define TIF_SYSCALL_TRACE 24 /* syscall trace active */ #define TIF_SYSCALL_AUDIT 25 /* syscall auditing active */ #define TIF_SECCOMP 26 /* secure computing */ #define TIF_SYSCALL_TRACEPOINT 27 /* syscall tracepoint instrumentation */ -#define _TIF_NOTIFY_RESUME BIT(TIF_NOTIFY_RESUME) -#define _TIF_SIGPENDING BIT(TIF_SIGPENDING) -#define _TIF_NEED_RESCHED BIT(TIF_NEED_RESCHED) -#define _TIF_NEED_RESCHED_LAZY BIT(TIF_NEED_RESCHED_LAZY) -#define _TIF_UPROBE BIT(TIF_UPROBE) -#define _TIF_PATCH_PENDING BIT(TIF_PATCH_PENDING) #define _TIF_ASCE_PRIMARY BIT(TIF_ASCE_PRIMARY) -#define _TIF_NOTIFY_SIGNAL BIT(TIF_NOTIFY_SIGNAL) #define _TIF_GUARDED_STORAGE BIT(TIF_GUARDED_STORAGE) #define _TIF_ISOLATE_BP_GUEST BIT(TIF_ISOLATE_BP_GUEST) #define _TIF_PER_TRAP BIT(TIF_PER_TRAP) #define _TIF_31BIT BIT(TIF_31BIT) -#define _TIF_MEMDIE BIT(TIF_MEMDIE) -#define _TIF_RESTORE_SIGMASK BIT(TIF_RESTORE_SIGMASK) #define _TIF_SINGLE_STEP BIT(TIF_SINGLE_STEP) #define _TIF_BLOCK_STEP BIT(TIF_BLOCK_STEP) #define _TIF_UPROBE_SINGLESTEP BIT(TIF_UPROBE_SINGLESTEP)
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