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| author | Nicholas Piggin <npiggin@gmail.com> | 2022-01-23 15:00:39 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-05-13 14:33:33 +0300 |
| commit | 5d506f159b2b9d0c9bee9bb43ccafb4f291143c2 (patch) | |
| tree | 3f1af91259d27e3c3b07e7400c36fe38207fec5c /arch/powerpc/include/asm | |
| parent | 18827eeef022df43c1fdeca0fde00ca09405dff1 (diff) | |
| download | linux-5d506f159b2b9d0c9bee9bb43ccafb4f291143c2.tar.xz | |
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/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_asm.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 2 |
2 files changed, 1 insertions, 3 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s_asm.h b/arch/powerpc/include/asm/kvm_book3s_asm.h index b6d31bff5209..e6bda70b1d93 100644 --- a/arch/powerpc/include/asm/kvm_book3s_asm.h +++ b/arch/powerpc/include/asm/kvm_book3s_asm.h @@ -15,7 +15,7 @@ #define XICS_IPI 2 /* interrupt source # for IPIs */ /* LPIDs we support with this build -- runtime limit may be lower */ -#define KVMPPC_NR_LPIDS (LPID_RSVD + 1) +#define KVMPPC_NR_LPIDS (1UL << 12) /* Maximum number of threads per physical core */ #define MAX_SMT_THREADS 8 diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 1e14324c5190..1e8b2e04e626 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -473,8 +473,6 @@ #ifndef SPRN_LPID #define SPRN_LPID 0x13F /* Logical Partition Identifier */ #endif -#define LPID_RSVD_POWER7 0x3ff /* Reserved LPID for partn switching */ -#define LPID_RSVD 0xfff /* Reserved LPID for partn switching */ #define SPRN_HMER 0x150 /* Hypervisor maintenance exception reg */ #define HMER_DEBUG_TRIG (1ul << (63 - 17)) /* Debug trigger */ #define SPRN_HMEER 0x151 /* Hyp maintenance exception enable reg */ |