* Re: [PATCH v13 10/12] s390: Rename TIF_SINGLE_STEP to TIF_SINGLESTEP [not found] ` <20260313094738.3985794-11-ruanjinjie@huawei.com> @ 2026-03-13 10:09 ` Heiko Carstens 0 siblings, 0 replies; 3+ messages in thread From: Heiko Carstens @ 2026-03-13 10:09 UTC (permalink / raw) To: Jinjie Ruan Cc: mark.rutland, schuster.simon, andreas, kees, catalin.marinas, dave.hansen, ldv, song, linux-kselftest, hpa, agordeev, shuah, jremus, linux-arch, linux-s390, gor, will, deller, x86, mingo, linux-arm-kernel, borntraeger, kmal, tglx, thuth, ryan.roberts, arnd, anshuman.khandual, linux-kernel, kevin.brodsky, charlie, pengcan, broonie, bp, richard.weiyang, dvyukov, jgross, wad, yeoreum.yun, oleg, luto, svens, liqiang01, mathieu.desnoyers, akpm, reddybalavignesh9979, macro On Fri, Mar 13, 2026 at 05:47:36PM +0800, Jinjie Ruan wrote: > Rename TIF_SINGLE_STEP to TIF_SINGLESTEP to align with the naming > convention used by arm64, x86, and other architectures. > > By aligning the name, TIF_SINGLESTEP can be consolidated into the generic > TIF bits definitions, reducing architectural divergence and simplifying > cross-architecture entry/exit logic. > > No functional changes intended. > > Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com> > --- > arch/s390/include/asm/thread_info.h | 4 ++-- > arch/s390/kernel/process.c | 2 +- > arch/s390/kernel/ptrace.c | 20 ++++++++++---------- > arch/s390/kernel/signal.c | 6 +++--- > 4 files changed, 16 insertions(+), 16 deletions(-) Acked-by: Heiko Carstens <hca@linux.ibm.com> ^ permalink raw reply [flat|nested] 3+ messages in thread
[parent not found: <20260313094738.3985794-12-ruanjinjie@huawei.com>]
* Re: [PATCH v13 11/12] arm64: Use generic TIF bits for common thread flags [not found] ` <20260313094738.3985794-12-ruanjinjie@huawei.com> @ 2026-03-13 10:10 ` Heiko Carstens 2026-03-16 8:30 ` Jinjie Ruan 0 siblings, 1 reply; 3+ messages in thread From: Heiko Carstens @ 2026-03-13 10:10 UTC (permalink / raw) To: Jinjie Ruan Cc: mark.rutland, schuster.simon, andreas, kees, catalin.marinas, dave.hansen, ldv, song, linux-kselftest, hpa, agordeev, shuah, jremus, linux-arch, linux-s390, gor, will, deller, x86, mingo, linux-arm-kernel, borntraeger, kmal, tglx, thuth, ryan.roberts, arnd, anshuman.khandual, linux-kernel, kevin.brodsky, charlie, pengcan, broonie, bp, richard.weiyang, dvyukov, jgross, wad, yeoreum.yun, oleg, luto, svens, liqiang01, mathieu.desnoyers, akpm, reddybalavignesh9979, macro On Fri, Mar 13, 2026 at 05:47:37PM +0800, Jinjie Ruan wrote: > Use the generic TIF bits defined in <asm-generic/thread_info_tif.h> for > standard thread flags (TIF_SIGPENDING, TIF_NEED_RESCHED, TIF_NOTIFY_RESUME, > TIF_RESTORE_SIGMASK, TIF_SINGLESTEP, etc.) instead of defining > them locally. > > Arm64-specific bits (TIF_FOREIGN_FPSTATE, TIF_MTE_ASYNC_FAULT, TIF_SVE, > TIF_SSBD, etc.) are renumbered to start at bit 16 to avoid conflicts. > > This enables RSEQ optimizations which require CONFIG_HAVE_GENERIC_TIF_BITS > combined with the generic entry infrastructure (already used by arm64). > > Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com> > --- > arch/arm64/Kconfig | 1 + > arch/arm64/include/asm/thread_info.h | 62 ++++++++++++--------------- > arch/s390/include/asm/thread_info.h | 7 ++- Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390 > arch/x86/include/asm/thread_info.h | 6 +-- > include/asm-generic/thread_info_tif.h | 5 +++ > 5 files changed, 38 insertions(+), 43 deletions(-) FWIW, I guess you want to do the same for loongarch was well? ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v13 11/12] arm64: Use generic TIF bits for common thread flags 2026-03-13 10:10 ` [PATCH v13 11/12] arm64: Use generic TIF bits for common thread flags Heiko Carstens @ 2026-03-16 8:30 ` Jinjie Ruan 0 siblings, 0 replies; 3+ messages in thread From: Jinjie Ruan @ 2026-03-16 8:30 UTC (permalink / raw) To: Heiko Carstens Cc: mark.rutland, schuster.simon, andreas, kees, catalin.marinas, dave.hansen, ldv, song, linux-kselftest, hpa, agordeev, shuah, jremus, linux-arch, linux-s390, gor, will, deller, x86, mingo, linux-arm-kernel, borntraeger, kmal, tglx, thuth, ryan.roberts, arnd, anshuman.khandual, linux-kernel, kevin.brodsky, charlie, pengcan, broonie, bp, richard.weiyang, dvyukov, jgross, wad, yeoreum.yun, oleg, luto, svens, liqiang01, mathieu.desnoyers, akpm, reddybalavignesh9979, macro On 2026/3/13 18:10, Heiko Carstens wrote: > On Fri, Mar 13, 2026 at 05:47:37PM +0800, Jinjie Ruan wrote: >> Use the generic TIF bits defined in <asm-generic/thread_info_tif.h> for >> standard thread flags (TIF_SIGPENDING, TIF_NEED_RESCHED, TIF_NOTIFY_RESUME, >> TIF_RESTORE_SIGMASK, TIF_SINGLESTEP, etc.) instead of defining >> them locally. >> >> Arm64-specific bits (TIF_FOREIGN_FPSTATE, TIF_MTE_ASYNC_FAULT, TIF_SVE, >> TIF_SSBD, etc.) are renumbered to start at bit 16 to avoid conflicts. >> >> This enables RSEQ optimizations which require CONFIG_HAVE_GENERIC_TIF_BITS >> combined with the generic entry infrastructure (already used by arm64). >> >> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com> >> --- >> arch/arm64/Kconfig | 1 + >> arch/arm64/include/asm/thread_info.h | 62 ++++++++++++--------------- >> arch/s390/include/asm/thread_info.h | 7 ++- > > Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390 > >> arch/x86/include/asm/thread_info.h | 6 +-- >> include/asm-generic/thread_info_tif.h | 5 +++ >> 5 files changed, 38 insertions(+), 43 deletions(-) > > FWIW, I guess you want to do the same for loongarch was well? Good point. I will include the LoongArch changes in the next version of this patchset. Thanks! ^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-03-13 10:09 ` [PATCH v13 10/12] s390: Rename TIF_SINGLE_STEP to TIF_SINGLESTEP Heiko Carstens
[not found] ` <20260313094738.3985794-12-ruanjinjie@huawei.com>
2026-03-13 10:10 ` [PATCH v13 11/12] arm64: Use generic TIF bits for common thread flags Heiko Carstens
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