diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2022-02-18 08:34:14 +0100 |
|---|---|---|
| committer | Cédric Le Goater <clg@kaod.org> | 2022-02-18 08:34:14 +0100 |
| commit | 4dce0bde3047e773750237390ecd64829f1eac58 (patch) | |
| tree | 4cbee10f890a1799da6dbb7fb76fd85c045767db | |
| parent | 93aeb702105e0dabaf70518bacc7f6fc102c1c34 (diff) | |
| download | qemu-4dce0bde3047e773750237390ecd64829f1eac58.zip qemu-4dce0bde3047e773750237390ecd64829f1eac58.tar.gz qemu-4dce0bde3047e773750237390ecd64829f1eac58.tar.bz2 | |
target/ppc: add vhyp addressing mode helper for radix MMU
The radix on vhyp MMU uses a single-level radix table walk, with the
partition scope mapping provided by the flat QEMU machine memory.
A subsequent change will use the two-level radix walk on vhyp in some
situations, so provide a helper which can abstract that logic.
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20220216102545.1808018-5-npiggin@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
| -rw-r--r-- | target/ppc/mmu-radix64.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/target/ppc/mmu-radix64.c b/target/ppc/mmu-radix64.c index 2744949..04690b6 100644 --- a/target/ppc/mmu-radix64.c +++ b/target/ppc/mmu-radix64.c @@ -354,6 +354,17 @@ static int ppc_radix64_partition_scoped_xlate(PowerPCCPU *cpu, return 0; } +/* + * The spapr vhc has a flat partition scope provided by qemu memory. + */ +static bool vhyp_flat_addressing(PowerPCCPU *cpu) +{ + if (cpu->vhyp) { + return true; + } + return false; +} + static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu, MMUAccessType access_type, vaddr eaddr, uint64_t pid, @@ -385,7 +396,7 @@ static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu, } prtbe_addr = (pate.dw1 & PATE1_R_PRTB) + offset; - if (cpu->vhyp) { + if (vhyp_flat_addressing(cpu)) { prtbe0 = ldq_phys(cs->as, prtbe_addr); } else { /* @@ -411,7 +422,7 @@ static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu, *g_page_size = PRTBE_R_GET_RTS(prtbe0); base_addr = prtbe0 & PRTBE_R_RPDB; nls = prtbe0 & PRTBE_R_RPDS; - if (msr_hv || cpu->vhyp) { + if (msr_hv || vhyp_flat_addressing(cpu)) { /* * Can treat process table addresses as real addresses */ @@ -515,7 +526,7 @@ static bool ppc_radix64_xlate_impl(PowerPCCPU *cpu, vaddr eaddr, relocation = !mmuidx_real(mmu_idx); /* HV or virtual hypervisor Real Mode Access */ - if (!relocation && (mmuidx_hv(mmu_idx) || cpu->vhyp)) { + if (!relocation && (mmuidx_hv(mmu_idx) || vhyp_flat_addressing(cpu))) { /* In real mode top 4 effective addr bits (mostly) ignored */ *raddr = eaddr & 0x0FFFFFFFFFFFFFFFULL; @@ -594,7 +605,7 @@ static bool ppc_radix64_xlate_impl(PowerPCCPU *cpu, vaddr eaddr, g_raddr = eaddr & R_EADDR_MASK; } - if (cpu->vhyp) { + if (vhyp_flat_addressing(cpu)) { *raddr = g_raddr; } else { /* |