| From: |
| Josh Poimboeuf <jpoimboe-AT-kernel.org> |
| To: |
| x86-AT-kernel.org |
| Subject: |
| [PATCH 00/20] x86: Cleanup alternative_io() and friends, prep for asm_call() |
| Date: |
| Fri, 14 Mar 2025 14:41:13 -0700 |
| Message-ID: |
| <cover.1741988314.git.jpoimboe@kernel.org> |
| Cc: |
| linux-kernel-AT-vger.kernel.org, Linus Torvalds <torvalds-AT-linux-foundation.org>, Peter Zijlstra <peterz-AT-infradead.org>, Borislav Petkov <bp-AT-alien8.de>, "H. Peter Anvin" <hpa-AT-zytor.com>, Uros Bizjak <ubizjak-AT-gmail.com>, Andrew Cooper <andrew.cooper3-AT-citrix.com>, Ingo Molnar <mingo-AT-kernel.org> |
| Archive-link: |
| Article |
Make the alternative_io() interface more straightforward and flexible,
and get rid of alternative_input().
These patches are a prereq for another set[1] which will get rid of
ASM_CALL_CONSTRAINT[2] in favor of a much more flexible asm_call()
interface similar to the new alternative_io().
[1] Additional 20+ patches not posted yet to avoid flooding inboxes
[2] ASM_CALL_CONSTRAINT is semi-broken with Clang+KCOV+KMSAN.
https://lore.kernel.org/174108458465.14745.15292444415957...
https://lore.kernel.org/174099976188.10177.71535717012785...
Josh Poimboeuf (20):
x86/cpu: Use named asm operands in prefetch[w]()
x86/apic: Use named asm operands in native_apic_mem_write()
x86/mm: Use named asm operands in task_size_max()
x86/cpu: Use named asm operands in clflushopt()
x86/asm: Always use flag output operands
x86/asm: Remove CC_SET()
x86/alternative: Remove operand numbering restrictions
x86/asm: Replace ASM_{OUTPUT,INPUT}() with ARG()
x86/alternative: Simplify alternative_io() interface
x86/alternative: Add alternative_2_io()
x86/alternative: Make alternative() a wrapper around alternative_io()
x86/cpu: Use alternative_io() in prefetch[w]()
x86/alternative: Remove alternative_input()
x86/barrier: Use alternative_io() in 32-bit barrier functions
x86/cpu/amd: Use named asm operands in asm_clear_divider()
x86/cpu: Use alternative_io() in amd_clear_divider()
x86/smap: Use named asm operands in smap_{save,restore}()
x86/smap: Use alternative_io() in smap_{save,restore}()
x86/uaccess: Use alternative_io() in __untagged_addr()
x86/msr: Use alternative_2_io() in rdtsc_ordered()
arch/x86/boot/bitops.h | 2 +-
arch/x86/boot/boot.h | 4 +-
arch/x86/boot/string.c | 2 +-
arch/x86/include/asm/alternative.h | 31 +++++-----
arch/x86/include/asm/apic.h | 7 ++-
arch/x86/include/asm/archrandom.h | 2 -
arch/x86/include/asm/asm.h | 21 +++----
arch/x86/include/asm/atomic64_32.h | 93 +++++++++++++++-------------
arch/x86/include/asm/barrier.h | 23 +++++--
arch/x86/include/asm/bitops.h | 6 --
arch/x86/include/asm/cmpxchg.h | 4 --
arch/x86/include/asm/cmpxchg_32.h | 2 -
arch/x86/include/asm/cmpxchg_64.h | 1 -
arch/x86/include/asm/msr.h | 13 ++--
arch/x86/include/asm/page_64.h | 16 ++---
arch/x86/include/asm/percpu.h | 4 --
arch/x86/include/asm/processor.h | 22 ++++---
arch/x86/include/asm/rmwcc.h | 24 +------
arch/x86/include/asm/segment.h | 5 +-
arch/x86/include/asm/sev.h | 1 -
arch/x86/include/asm/signal.h | 2 +-
arch/x86/include/asm/smap.h | 18 +++---
arch/x86/include/asm/special_insns.h | 9 ++-
arch/x86/include/asm/uaccess.h | 1 -
arch/x86/include/asm/uaccess_64.h | 8 +--
tools/arch/x86/include/asm/asm.h | 10 +--
tools/perf/bench/find-bit-bench.c | 4 --
27 files changed, 153 insertions(+), 182 deletions(-)
--
2.48.1
