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f08cbf5c7d
kvm_hstate.in_guest provides the equivalent of MSR[RI]=0 protection, and it covers the existing MSR[RI]=0 section in late entry and early exit, so clearing and setting MSR[RI] in those cases does not actually do anything useful. Remove the RI manipulation and replace it with comments. Make the in_guest memory accesses a bit closer to a proper critical section pattern. This speeds up guest entry/exit performance. This also removes the MSR[RI] warnings which aren't very interesting and would cause crashes if they hit due to causing an interrupt in non-recoverable code. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20211123095231.1036501-48-npiggin@gmail.com |
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| .. | ||
| 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 | ||