mirror of
https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10.git
synced 2026-09-09 00:07:04 +08:00
Maxim Levitsky
2e2fa1166d
JIRA: https://issues.redhat.com/browse/RHEL-151869 commit a08ca6691fd3ab40e40eb6600193672d50c7a7ba Author: Sean Christopherson <seanjc@google.com> Date: Tue Dec 30 13:13:45 2025 -0800 KVM: SVM: Limit incorrect check on SVM_EXIT_ERR to running as a VM Limit KVM's incorrect check for VMXEXIT_INVALID, a.k.a. SVM_EXIT_ERR, to running as a VM, as detected by X86_FEATURE_HYPERVISOR. The exit_code and all failure codes, e.g. VMXEXIT_INVALID, are 64-bit values, and so checking only bits 31:0 could result in false positives when running on non-broken hardware, e.g. in the extremely unlikely scenario exit code 0xffffffffull is ever generated by hardware. Keep the 32-bit check to play nice with running on broken KVM (for years, KVM has not set bits 63:32 when synthesizing nested SVM VM-Exits). Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev> Link: https://patch.msgid.link/20251230211347.4099600-7-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
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 reStructuredText 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.