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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-29 12:31:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-29 12:31:35 -0700 |
| commit | 06482600419b51cbda5162baa27686fca7df2254 (patch) | |
| tree | 6a5e002e9420cf5d397456c26e47f8199034c221 /arch/arm64/kernel/head.S | |
| parent | 9f2a5128b94beb6bb63d8fc03d67f47203b04b3a (diff) | |
| parent | 760bfb47c36a07741a089bf6a28e854ffbee7dc9 (diff) | |
| download | linux-06482600419b51cbda5162baa27686fca7df2254.tar.bz2 | |
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- SPsel register initialisation on reset as the architecture defines
its state as unknown
- Use READ_ONCE when dereferencing pmd_t pointers to avoid race
conditions in page_vma_mapped_walk() (or fast GUP) with concurrent
modifications of the page table
- Avoid invoking the mm fault handling code for kernel addresses (check
against TASK_SIZE) which would otherwise result in calling
might_sleep() in atomic context
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fault: Route pte translation faults via do_translation_fault
arm64: mm: Use READ_ONCE when dereferencing pointer to pte table
arm64: Make sure SPsel is always set
Diffstat (limited to 'arch/arm64/kernel/head.S')
| -rw-r--r-- | arch/arm64/kernel/head.S | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 7434ec0c7a27..0b243ecaf7ac 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -384,6 +384,7 @@ ENTRY(kimage_vaddr) * booted in EL1 or EL2 respectively. */ ENTRY(el2_setup) + msr SPsel, #1 // We want to use SP_EL{1,2} mrs x0, CurrentEL cmp x0, #CurrentEL_EL2 b.eq 1f |