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| author | David Gibson <david@gibson.dropbear.id.au> | 2018-05-03 16:52:40 +1000 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2018-05-04 11:15:18 +1000 |
| commit | 090052aa08dbc774e55bc71a3058f24c8959586d (patch) | |
| tree | d126f637a61c0cd8dac914706719ce2f95a25843 /target/ppc/kvm_ppc.h | |
| parent | 4a7518e0fdaa20525730ae0709a4afa0960a6c67 (diff) | |
| download | qemu-090052aa08dbc774e55bc71a3058f24c8959586d.zip | |
spapr: Remove support for explicitly allocated RMAs
Current POWER cpus allow for a VRMA, a special mapping which describes a
guest's view of memory when in real mode (MMU off, from the guest's point
of view). Older cpus didn't have that which meant that to support a guest
a special host-contiguous region of memory was needed to give the guest its
Real Mode Area (RMA).
KVM used to provide special calls to allocate a contiguous RMA for those
cases. This was useful in the early days of KVM on Power to allow it to be
tested on PowerPC 970 chips as used in Macintosh G5 machines. Now, those
machines are so old as to be almost irrelevant.
The normal qemu deprecation process would require this to be marked
deprecated then removed in 2 releases. However, this can only be used
with corresponding support in the host kernel - which was dropped
years ago (in c17b98cf "KVM: PPC: Book3S HV: Remove code for PPC970
processors" of 2014-12-03 to be precise). Therefore it should be ok
to drop this immediately.
Just to be clear this only affects *KVM HV* guests with PowerPC 970,
and those already require an ancient host kernel. TCG and KVM PR
guests with PowerPC 970 should still work.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target/ppc/kvm_ppc.h')
| -rw-r--r-- | target/ppc/kvm_ppc.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h index 4d2789eef6..e2840e1d33 100644 --- a/target/ppc/kvm_ppc.h +++ b/target/ppc/kvm_ppc.h @@ -37,7 +37,6 @@ target_ulong kvmppc_configure_v3_mmu(PowerPCCPU *cpu, bool radix, bool gtse, uint64_t proc_tbl); #ifndef CONFIG_USER_ONLY -off_t kvmppc_alloc_rma(void **rma); bool kvmppc_spapr_use_multitce(void); int kvmppc_spapr_enable_inkernel_multitce(void); void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t page_shift, @@ -188,11 +187,6 @@ static inline target_ulong kvmppc_configure_v3_mmu(PowerPCCPU *cpu, } #ifndef CONFIG_USER_ONLY -static inline off_t kvmppc_alloc_rma(void **rma) -{ - return 0; -} - static inline bool kvmppc_spapr_use_multitce(void) { return false; |