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KVM: PPC: Book3S HV: Remove KVMPPC_NR_LPIDS 

KVMPPC_NR_LPIDS no longer represents any size restriction on the
LPID space and can be removed. A CPU with more than 12 LPID bits
implemented will now be able to create more than 4095 guests.

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/20220123120043.3586018-7-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2022-01-23 22:00:43 +10:00 committed by Michael Ellerman
parent 03a2e65f54
commit f104df7d51
2 changed files with 0 additions and 6 deletions
arch/powerpc
include/asm
kvm_book3s_asm.h
kvm
book3s_64_mmu_hv.c

3
arch/powerpc/include/asm/kvm_book3s_asm.h
View File

@ -14,9 +14,6 @@
#define XICS_MFRR 0xc
#define XICS_IPI 2 /* interrupt source # for IPIs */
/* LPIDs we support with this build -- runtime limit may be lower */
#define KVMPPC_NR_LPIDS (1UL << 12)
/* Maximum number of threads per physical core */
#define MAX_SMT_THREADS 8

3
arch/powerpc/kvm/book3s_64_mmu_hv.c
View File

@ -269,9 +269,6 @@ int kvmppc_mmu_hv_init(void)
nr_lpids = 1UL << KVM_MAX_NESTED_GUESTS_SHIFT;
}
if (nr_lpids > KVMPPC_NR_LPIDS)
nr_lpids = KVMPPC_NR_LPIDS;
if (!cpu_has_feature(CPU_FTR_ARCH_300)) {
/* POWER7 has 10-bit LPIDs, POWER8 has 12-bit LPIDs */
if (cpu_has_feature(CPU_FTR_ARCH_207S))