mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-09-28 19:20:30 +00:00
caf9a82657
Pull x86 PTI preparatory patches from Thomas Gleixner:
"Todays Advent calendar window contains twentyfour easy to digest
patches. The original plan was to have twenty three matching the date,
but a late fixup made that moot.
- Move the cpu_entry_area mapping out of the fixmap into a separate
address space. That's necessary because the fixmap becomes too big
with NRCPUS=8192 and this caused already subtle and hard to
diagnose failures.
The top most patch is fresh from today and cures a brain slip of
that tall grumpy german greybeard, who ignored the intricacies of
32bit wraparounds.
- Limit the number of CPUs on 32bit to 64. That's insane big already,
but at least it's small enough to prevent address space issues with
the cpu_entry_area map, which have been observed and debugged with
the fixmap code
- A few TLB flush fixes in various places plus documentation which of
the TLB functions should be used for what.
- Rename the SYSENTER stack to CPU_ENTRY_AREA stack as it is used for
more than sysenter now and keeping the name makes backtraces
confusing.
- Prevent LDT inheritance on exec() by moving it to arch_dup_mmap(),
which is only invoked on fork().
- Make vysycall more robust.
- A few fixes and cleanups of the debug_pagetables code. Check
PAGE_PRESENT instead of checking the PTE for 0 and a cleanup of the
C89 initialization of the address hint array which already was out
of sync with the index enums.
- Move the ESPFIX init to a different place to prepare for PTI.
- Several code moves with no functional change to make PTI
integration simpler and header files less convoluted.
- Documentation fixes and clarifications"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
x86/cpu_entry_area: Prevent wraparound in setup_cpu_entry_area_ptes() on 32bit
init: Invoke init_espfix_bsp() from mm_init()
x86/cpu_entry_area: Move it out of the fixmap
x86/cpu_entry_area: Move it to a separate unit
x86/mm: Create asm/invpcid.h
x86/mm: Put MMU to hardware ASID translation in one place
x86/mm: Remove hard-coded ASID limit checks
x86/mm: Move the CR3 construction functions to tlbflush.h
x86/mm: Add comments to clarify which TLB-flush functions are supposed to flush what
x86/mm: Remove superfluous barriers
x86/mm: Use __flush_tlb_one() for kernel memory
x86/microcode: Dont abuse the TLB-flush interface
x86/uv: Use the right TLB-flush API
x86/entry: Rename SYSENTER_stack to CPU_ENTRY_AREA_entry_stack
x86/doc: Remove obvious weirdnesses from the x86 MM layout documentation
x86/mm/64: Improve the memory map documentation
x86/ldt: Prevent LDT inheritance on exec
x86/ldt: Rework locking
arch, mm: Allow arch_dup_mmap() to fail
x86/vsyscall/64: Warn and fail vsyscall emulation in NATIVE mode
...
|
History
|
|
|---|---|---|
| .. | ||
| android | ||
| bpf | ||
| breakpoints | ||
| capabilities | ||
| cpu-hotplug | ||
| cpufreq | ||
| drivers/gpu | ||
| efivarfs | ||
| exec | ||
| filesystems | ||
| firmware | ||
| ftrace | ||
| futex | ||
| gpio | ||
| ia64 | ||
| intel_pstate | ||
| ipc | ||
| kcmp | ||
| kmod | ||
| lib | ||
| locking | ||
| media_tests | ||
| membarrier | ||
| memfd | ||
| memory-hotplug | ||
| mount | ||
| mqueue | ||
| net | ||
| networking/timestamping | ||
| nsfs | ||
| ntb | ||
| powerpc | ||
| prctl | ||
| pstore | ||
| ptp | ||
| ptrace | ||
| rcutorture | ||
| seccomp | ||
| sigaltstack | ||
| size | ||
| splice | ||
| static_keys | ||
| sync | ||
| sysctl | ||
| tc-testing | ||
| timers | ||
| user | ||
| vDSO | ||
| vm | ||
| watchdog | ||
| x86 | ||
| zram | ||
| .gitignore | ||
| gen_kselftest_tar.sh | ||
| kselftest.h | ||
| kselftest_harness.h | ||
| kselftest_install.sh | ||
| lib.mk | ||
| Makefile | ||