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7aeae02761
Use kvm_pat_valid() directly instead of bouncing through kvm_mtrr_valid(). The PAT is not an MTRR, and kvm_mtrr_valid() just redirects to kvm_pat_valid(), i.e. is exempt from KVM's "zap SPTEs" logic that's needed to honor guest MTRRs when the VM has a passthrough device with non-coherent DMA (KVM does NOT set "ignore guest PAT" in this case, and so enables hardware virtualization of the guest's PAT, i.e. doesn't need to manually emulate the PAT memtype). Signed-off-by: Ke Guo <guoke@uniontech.com> [sean: massage changelog] Reviewed-by: Kai Huang <kai.huang@intel.com> Link: https://lore.kernel.org/r/20230511233351.635053-3-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.