From: Gabriel Krisman Bertazi <krisman@collabora.com>
To: luto@kernel.org, tglx@linutronix.de
Cc: hpa@zytor.com, bp@alien8.de, rric@kernel.org,
peterz@infradead.org, mingo@redhat.com, x86@kernel.org,
linux-kernel@vger.kernel.org,
Gabriel Krisman Bertazi <krisman@collabora.com>,
kernel@collabora.com
Subject: [PATCH 0/6] Prepare for removal of TIF_IA32 and TIF_X32
Date: Sat, 12 Sep 2020 03:05:47 -0400 [thread overview]
Message-ID: <20200912070553.330622-1-krisman@collabora.com> (raw)
We are running out of TI flags for x86. This patchset removes several
usages of TIF_IA32 and TIF_x32 in preparation to reclaim these flags.
After these cleanups, there is still one more user for both of them,
which I need to take a better look before removing.
Many of the ideas for this patchset came from Andy Lutomirski (Thank
you!)
These were tested by exercising these paths with x32 and ia32 binaries.
Gabriel Krisman Bertazi (6):
x86: events: Avoid TIF_IA32 when checking 64bit mode
x86: Simplify compat syscall userspace allocation
x86: oprofile: Avoid TIF_IA32 when checking 64bit mode
x86: elf: Use e_machine to choose DLINFO in compat
x86: elf: Use e_machine to select start_thread for x32
x86: elf: Use e_machine to select setup_additional_pages for x32
arch/x86/entry/vdso/vma.c | 21 ++++++++++++---------
arch/x86/events/core.c | 2 +-
arch/x86/events/intel/ds.c | 2 +-
arch/x86/events/intel/lbr.c | 2 +-
arch/x86/include/asm/compat.h | 15 +++++++--------
arch/x86/include/asm/elf.h | 24 ++++++++++++++++++------
arch/x86/kernel/perf_regs.c | 2 +-
arch/x86/kernel/process_64.c | 11 +++++++----
arch/x86/oprofile/backtrace.c | 2 +-
9 files changed, 49 insertions(+), 32 deletions(-)
--
2.28.0
next reply other threads:[~2020-09-12 7:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-12 7:05 Gabriel Krisman Bertazi [this message]
2020-09-12 7:05 ` [PATCH 1/6] x86: events: Avoid TIF_IA32 when checking 64bit mode Gabriel Krisman Bertazi
2020-09-14 10:33 ` peterz
2020-09-12 7:05 ` [PATCH 2/6] x86: Simplify compat syscall userspace allocation Gabriel Krisman Bertazi
2020-09-12 7:08 ` Christoph Hellwig
2020-09-12 7:54 ` Gabriel Krisman Bertazi
2020-09-12 7:05 ` [PATCH 3/6] x86: oprofile: Avoid TIF_IA32 when checking 64bit mode Gabriel Krisman Bertazi
2020-09-12 7:05 ` [PATCH 4/6] x86: elf: Use e_machine to choose DLINFO in compat Gabriel Krisman Bertazi
2020-09-12 7:05 ` [PATCH 5/6] x86: elf: Use e_machine to select start_thread for x32 Gabriel Krisman Bertazi
2020-09-12 7:05 ` [PATCH 6/6] x86: elf: Use e_machine to select setup_additional_pages " Gabriel Krisman Bertazi
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