mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-14 06:35:12 +00:00
f5af0a9787
On P10, the feature doing an automatic "save & restore" of a VCPU interrupt context is set by default in OPAL. When a VP context is pulled out, the state of the interrupt registers are saved by the XIVE interrupt controller under the internal NVP structure representing the VP. This saves a costly store/load in guest entries and exits. If OPAL advertises the "save & restore" feature in the device tree, it should also have set the 'H' bit in the CAM line. Check that when vCPUs are connected to their ICP in KVM before going any further. Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210720134209.256133-3-clg@kaod.org |
||
|---|---|---|
| .. | ||
| boot | ||
| configs | ||
| crypto | ||
| include | ||
| kernel | ||
| kexec | ||
| kvm | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| perf | ||
| platforms | ||
| purgatory | ||
| sysdev | ||
| tools | ||
| xmon | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||
| Makefile.postlink | ||