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c987876a80
Contrary to the non-VHE version of the TLB invalidation helpers, the VHE code has interrupts enabled, meaning that we can take an interrupt in the middle of such a sequence, and start running something else with HCR_EL2.TGE cleared. That's really not a good idea. Take the heavy-handed option and disable interrupts in __tlb_switch_to_guest_vhe, restoring them in __tlb_switch_to_host_vhe. The latter also gain an ISB in order to make sure that TGE really has taken effect. Cc: stable@vger.kernel.org Acked-by: Christoffer Dall <christoffer.dall@arm.com> Reviewed-by: James Morse <james.morse@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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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.