8607daa214
KVM/arm64 fixes for 6.3, part #2 Fixes for a rather interesting set of bugs relating to the MMU: - Read the MMU notifier seq before dropping the mmap lock to guard against reading a potentially stale VMA - Disable interrupts when walking user page tables to protect against the page table being freed - Read the MTE permissions for the VMA within the mmap lock critical section, avoiding the use of a potentally stale VMA pointer Additionally, some fixes targeting the vPMU: - Return the sum of the current perf event value and PMC snapshot for reads from userspace - Don't save the value of guest writes to PMCR_EL0.{C,P}, which could otherwise lead to userspace erroneously resetting the vPMU during VM save/restore
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.