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KVMPPC_NR_LPIDS no longer represents any size restriction on the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

arch/powerpc/include/asm/kvm_book3s_asm.h

@@ -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
 

arch/powerpc/kvm/book3s_64_mmu_hv.c

@@ -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))