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target/ppc: change ppc_hash32_xlate to use mmu_idx

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Changed hash32 address translation to use the supplied mmu_idx, instead
of using what was stored in the msr, for parity purposes (radix64
already uses that) and for conceptual correctness, all the relevant
functions should always use the supplied mmu_idx, as there are no
guarantees that the mmu_idx stored in the CPU variable will not desync.

Signed-off-by: Bruno Larsen (billionai) <bruno.larsen@eldorado.org.br>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210706150316.21005-3-bruno.larsen@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Bruno Larsen (billionai) 2021-07-06 12:03:16 -03:00 committed by David Gibson
parent a97c4d3c1e
commit d423baf9b4
3 changed files with 21 additions and 23 deletions
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40
target/ppc/mmu-hash32.c
View file

@ -25,6 +25,7 @@
#include "kvm_ppc.h"
#include "internal.h"
#include "mmu-hash32.h"
#include "mmu-books.h"
#include "exec/log.h"
/* #define DEBUG_BATS */
@ -86,25 +87,22 @@ static int ppc_hash32_pp_prot(int key, int pp, int nx)
return prot;
}
static int ppc_hash32_pte_prot(PowerPCCPU *cpu,
static int ppc_hash32_pte_prot(int mmu_idx,
target_ulong sr, ppc_hash_pte32_t pte)
{
CPUPPCState *env = &cpu->env;
unsigned pp, key;
key = !!(msr_pr ? (sr & SR32_KP) : (sr & SR32_KS));
key = !!(mmuidx_pr(mmu_idx) ? (sr & SR32_KP) : (sr & SR32_KS));
pp = pte.pte1 & HPTE32_R_PP;
return ppc_hash32_pp_prot(key, pp, !!(sr & SR32_NX));
}
static target_ulong hash32_bat_size(PowerPCCPU *cpu,
static target_ulong hash32_bat_size(int mmu_idx,
target_ulong batu, target_ulong batl)
{
CPUPPCState *env = &cpu->env;
if ((msr_pr && !(batu & BATU32_VP))
|| (!msr_pr && !(batu & BATU32_VS))) {
if ((mmuidx_pr(mmu_idx) && !(batu & BATU32_VP))
|| (!mmuidx_pr(mmu_idx) && !(batu & BATU32_VS))) {
return 0;
}
@ -137,14 +135,13 @@ static target_ulong hash32_bat_601_size(PowerPCCPU *cpu,
return BATU32_BEPI & ~((batl & BATL32_601_BL) << 17);
}
static int hash32_bat_601_prot(PowerPCCPU *cpu,
static int hash32_bat_601_prot(int mmu_idx,
target_ulong batu, target_ulong batl)
{
CPUPPCState *env = &cpu->env;
int key, pp;
pp = batu & BATU32_601_PP;
if (msr_pr == 0) {
if (mmuidx_pr(mmu_idx) == 0) {
key = !!(batu & BATU32_601_KS);
} else {
key = !!(batu & BATU32_601_KP);
@ -153,7 +150,8 @@ static int hash32_bat_601_prot(PowerPCCPU *cpu,
}
static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
MMUAccessType access_type, int *prot)
MMUAccessType access_type, int *prot,
int mmu_idx)
{
CPUPPCState *env = &cpu->env;
target_ulong *BATlt, *BATut;
@ -177,7 +175,7 @@ static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
mask = hash32_bat_601_size(cpu, batu, batl);
} else {
mask = hash32_bat_size(cpu, batu, batl);
mask = hash32_bat_size(mmu_idx, batu, batl);
}
LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx
" BATl " TARGET_FMT_lx "\n", __func__,
@ -187,7 +185,7 @@ static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
hwaddr raddr = (batl & mask) | (ea & ~mask);
if (unlikely(env->mmu_model == POWERPC_MMU_601)) {
*prot = hash32_bat_601_prot(cpu, batu, batl);
*prot = hash32_bat_601_prot(mmu_idx, batu, batl);
} else {
*prot = hash32_bat_prot(cpu, batu, batl);
}
@ -224,12 +222,12 @@ static hwaddr ppc_hash32_bat_lookup(PowerPCCPU *cpu, target_ulong ea,
static bool ppc_hash32_direct_store(PowerPCCPU *cpu, target_ulong sr,
target_ulong eaddr,
MMUAccessType access_type,
hwaddr *raddr, int *prot,
hwaddr *raddr, int *prot, int mmu_idx,
bool guest_visible)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
int key = !!(msr_pr ? (sr & SR32_KP) : (sr & SR32_KS));
int key = !!(mmuidx_pr(mmu_idx) ? (sr & SR32_KP) : (sr & SR32_KS));
qemu_log_mask(CPU_LOG_MMU, "direct store...\n");
@ -428,7 +426,7 @@ static hwaddr ppc_hash32_pte_raddr(target_ulong sr, ppc_hash_pte32_t pte,
}
bool ppc_hash32_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
hwaddr *raddrp, int *psizep, int *protp,
hwaddr *raddrp, int *psizep, int *protp, int mmu_idx,
bool guest_visible)
{
CPUState *cs = CPU(cpu);
@ -444,7 +442,7 @@ bool ppc_hash32_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
*psizep = TARGET_PAGE_BITS;
/* 1. Handle real mode accesses */
if (access_type == MMU_INST_FETCH ? !msr_ir : !msr_dr) {
if (mmuidx_real(mmu_idx)) {
/* Translation is off */
*raddrp = eaddr;
*protp = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
@ -455,7 +453,7 @@ bool ppc_hash32_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
/* 2. Check Block Address Translation entries (BATs) */
if (env->nb_BATs != 0) {
raddr = ppc_hash32_bat_lookup(cpu, eaddr, access_type, protp);
raddr = ppc_hash32_bat_lookup(cpu, eaddr, access_type, protp, mmu_idx);
if (raddr != -1) {
if (need_prot & ~*protp) {
if (guest_visible) {
@ -486,7 +484,7 @@ bool ppc_hash32_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
/* 4. Handle direct store segments */
if (sr & SR32_T) {
return ppc_hash32_direct_store(cpu, sr, eaddr, access_type,
raddrp, protp, guest_visible);
raddrp, protp, mmu_idx, guest_visible);
}
/* 5. Check for segment level no-execute violation */
@ -523,7 +521,7 @@ bool ppc_hash32_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
/* 7. Check access permissions */
prot = ppc_hash32_pte_prot(cpu, sr, pte);
prot = ppc_hash32_pte_prot(mmu_idx, sr, pte);
if (need_prot & ~prot) {
/* Access right violation */

2
target/ppc/mmu-hash32.h
View file

@ -5,7 +5,7 @@
hwaddr get_pteg_offset32(PowerPCCPU *cpu, hwaddr hash);
bool ppc_hash32_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
hwaddr *raddrp, int *psizep, int *protp,
hwaddr *raddrp, int *psizep, int *protp, int mmu_idx,
bool guest_visible);
/*

2
target/ppc/mmu_helper.c
View file

@ -2914,7 +2914,7 @@ static bool ppc_xlate(PowerPCCPU *cpu, vaddr eaddr, MMUAccessType access_type,
case POWERPC_MMU_32B:
case POWERPC_MMU_601:
return ppc_hash32_xlate(cpu, eaddr, access_type,
raddrp, psizep, protp, guest_visible);
raddrp, psizep, protp, mmu_idx, guest_visible);
default:
return ppc_jumbo_xlate(cpu, eaddr, access_type, raddrp,