diff options
| author | Jordan Niethe <jniethe5@gmail.com> | 2023-09-14 06:05:58 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-09-14 15:04:24 +0300 |
| commit | dfcaacc8f970c6b4ea4e32d2186f2bea4a1d5255 (patch) | |
| tree | 846e2a2d51390e5e21cf4baa58fcac0f68d0bb96 /arch/powerpc/include/asm/kvm_book3s.h | |
| parent | 6ccbbc33f06adaf79acde18571c6543ad1cb4be6 (diff) | |
| download | linux-dfcaacc8f970c6b4ea4e32d2186f2bea4a1d5255.tar.xz | |
KVM: PPC: Book3s HV: Hold LPIDs in an unsigned long
The LPID register is 32 bits long. The host keeps the lpids for each
guest in an unsigned word struct kvm_arch. Currently, LPIDs are already
limited by mmu_lpid_bits and KVM_MAX_NESTED_GUESTS_SHIFT.
The nestedv2 API returns a 64 bit "Guest ID" to be used be the L1 host
for each L2 guest. This value is used as an lpid, e.g. it is the
parameter used by H_RPT_INVALIDATE. To minimize needless special casing
it makes sense to keep this "Guest ID" in struct kvm_arch::lpid.
This means that struct kvm_arch::lpid is too small so prepare for this
and make it an unsigned long. This is not a problem for the KVM-HV and
nestedv1 cases as their lpid values are already limited to valid ranges
so in those contexts the lpid can be used as an unsigned word safely as
needed.
In the PAPR, the H_RPT_INVALIDATE pid/lpid parameter is already
specified as an unsigned long so change pseries_rpt_invalidate() to
match that. Update the callers of pseries_rpt_invalidate() to also take
an unsigned long if they take an lpid value.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230914030600.16993-10-jniethe5@gmail.com
Diffstat (limited to 'arch/powerpc/include/asm/kvm_book3s.h')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 4c6558d5fefe..831c23e4f121 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -191,14 +191,14 @@ extern int kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr, extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, struct kvmppc_pte *gpte, bool data, bool iswrite); extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr, - unsigned int pshift, unsigned int lpid); + unsigned int pshift, u64 lpid); extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa, unsigned int shift, const struct kvm_memory_slot *memslot, - unsigned int lpid); + u64 lpid); extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, bool nested, bool writing, unsigned long gpa, - unsigned int lpid); + u64 lpid); extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu, unsigned long gpa, struct kvm_memory_slot *memslot, @@ -207,7 +207,7 @@ extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu, extern int kvmppc_init_vm_radix(struct kvm *kvm); extern void kvmppc_free_radix(struct kvm *kvm); extern void kvmppc_free_pgtable_radix(struct kvm *kvm, pgd_t *pgd, - unsigned int lpid); + u64 lpid); extern int kvmppc_radix_init(void); extern void kvmppc_radix_exit(void); extern void kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, @@ -300,7 +300,7 @@ void kvmhv_nested_exit(void); void kvmhv_vm_nested_init(struct kvm *kvm); long kvmhv_set_partition_table(struct kvm_vcpu *vcpu); long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu); -void kvmhv_set_ptbl_entry(unsigned int lpid, u64 dw0, u64 dw1); +void kvmhv_set_ptbl_entry(u64 lpid, u64 dw0, u64 dw1); void kvmhv_release_all_nested(struct kvm *kvm); long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu); long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu); |