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fcce7c1e7d
- Don't take kvm->lock when iterating over vCPUs in the suspend notifier to
fix a largely theoretical deadlock.
- Use the vCPU's actual Xen PV clock information when starting the Xen timer,
as the cached state in arch.hv_clock can be stale/bogus.
- Fix a bug where KVM could bleed PVCLOCK_GUEST_STOPPED across different
PV clocks.
- Restrict PVCLOCK_GUEST_STOPPED to kvmclock, as KVM's suspend notifier only
accounts for kvmclock, and there's no evidence that the flag is actually
supported by Xen guests.
- Clean up the per-vCPU "cache" of its reference pvclock, and instead only
track the vCPU's TSC scaling (multipler+shift) metadata (which is moderately
expensive to compute, and rarely changes for modern setups).
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Merge tag 'kvm-x86-pvclock-6.15' of https://github.com/kvm-x86/linux into HEAD
KVM PV clock changes for 6.15:
- Don't take kvm->lock when iterating over vCPUs in the suspend notifier to
fix a largely theoretical deadlock.
- Use the vCPU's actual Xen PV clock information when starting the Xen timer,
as the cached state in arch.hv_clock can be stale/bogus.
- Fix a bug where KVM could bleed PVCLOCK_GUEST_STOPPED across different
PV clocks.
- Restrict PVCLOCK_GUEST_STOPPED to kvmclock, as KVM's suspend notifier only
accounts for kvmclock, and there's no evidence that the flag is actually
supported by Xen guests.
- Clean up the per-vCPU "cache" of its reference pvclock, and instead only
track the vCPU's TSC scaling (multipler+shift) metadata (which is moderately
expensive to compute, and rarely changes for modern setups).
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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 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.