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ed766c2611
- Make IA32_EMULATION boot time configurable with
the new ia32_emulation=<bool> boot option.
- Clean up fast syscall return validation code: convert
it to C and refactor the code.
- As part of this, optimize the canonical RIP test code.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-entry-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 entry updates from Ingo Molnar:
- Make IA32_EMULATION boot time configurable with
the new ia32_emulation=<bool> boot option
- Clean up fast syscall return validation code: convert
it to C and refactor the code
- As part of this, optimize the canonical RIP test code
* tag 'x86-entry-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/entry/32: Clean up syscall fast exit tests
x86/entry/64: Use TASK_SIZE_MAX for canonical RIP test
x86/entry/64: Convert SYSRET validation tests to C
x86/entry/32: Remove SEP test for SYSEXIT
x86/entry/32: Convert do_fast_syscall_32() to bool return type
x86/entry/compat: Combine return value test from syscall handler
x86/entry/64: Remove obsolete comment on tracing vs. SYSRET
x86: Make IA32_EMULATION boot time configurable
x86/entry: Make IA32 syscalls' availability depend on ia32_enabled()
x86/elf: Make loading of 32bit processes depend on ia32_enabled()
x86/entry: Compile entry_SYSCALL32_ignore() unconditionally
x86/entry: Rename ignore_sysret()
x86: Introduce ia32_enabled()
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.