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| author | Nicholas Piggin <npiggin@gmail.com> | 2022-01-23 22:00:39 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-05-13 21:33:33 +1000 |
| commit | 5d506f159b2b9d0c9bee9bb43ccafb4f291143c2 (patch) | |
| tree | 3f1af91259d27e3c3b07e7400c36fe38207fec5c /arch/powerpc/mm/init_64.c | |
| parent | 18827eeef022df43c1fdeca0fde00ca09405dff1 (diff) | |
| download | linux-5d506f159b2b9d0c9bee9bb43ccafb4f291143c2.tar.bz2 | |
KVM: PPC: Book3S HV: Update LPID allocator init for POWER9, Nested
The LPID allocator init is changed to:
- use mmu_lpid_bits rather than hard-coding;
- use KVM_MAX_NESTED_GUESTS for nested hypervisors;
- not reserve the top LPID on POWER9 and newer CPUs.
The reserved LPID is made a POWER7/8-specific detail.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220123120043.3586018-3-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/mm/init_64.c')
| -rw-r--r-- | arch/powerpc/mm/init_64.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 83c0ee9fbf05..0f2608679067 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -372,6 +372,9 @@ void register_page_bootmem_memmap(unsigned long section_nr, #ifdef CONFIG_PPC_BOOK3S_64 unsigned int mmu_lpid_bits; +#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE +EXPORT_SYMBOL_GPL(mmu_lpid_bits); +#endif unsigned int mmu_pid_bits; static bool disable_radix = !IS_ENABLED(CONFIG_PPC_RADIX_MMU_DEFAULT); |