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.
Sean Christopherson
authored
Reuse the current root when possible instead of grabbing a different root from the array of cached roots. Doing so avoids unnecessary MMU switches and also fixes a quirk where KVM can't reuse roots without creating multiple roots since the cache is a victim cache, i.e. roots are added to the cache when they're "evicted", not when they are created. The quirk could be fixed by adding roots to the cache on creation, but that would reduce the effective size of the cache as one of its entries would be burned to track the current root. Reusing the current root is especially helpful for nested virt as the current root is almost always usable for the "new" MMU on nested VM-entry/VM-exit. Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by:Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
| Name | Last commit | Last update |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README |