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[152.2.133.133]) by smtp.gmail.com with ESMTPSA id af79cd13be357-794abcc0f0fsm79816585a.38.2024.05.24.10.08.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 24 May 2024 10:08:14 -0700 (PDT) From: Don Porter To: qemu-devel@nongnu.org Cc: dave@treblig.org, peter.maydell@linaro.org, nadav.amit@gmail.com, richard.henderson@linaro.org, Don Porter Subject: [PATCH v2 3/6] Convert 'info mem' to use generic iterator Date: Fri, 24 May 2024 13:07:45 -0400 Message-Id: <20240524170748.1842030-4-porter@cs.unc.edu> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240524170748.1842030-1-porter@cs.unc.edu> References: <20240524170748.1842030-1-porter@cs.unc.edu> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::c34; envelope-from=porter@cs.unc.edu; helo=mail-oo1-xc34.google.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Signed-off-by: Don Porter --- target/i386/monitor.c | 344 +++++------------------------------------- 1 file changed, 35 insertions(+), 309 deletions(-) diff --git a/target/i386/monitor.c b/target/i386/monitor.c index adf95edfb4..147743392d 100644 --- a/target/i386/monitor.c +++ b/target/i386/monitor.c @@ -480,332 +480,58 @@ void hmp_info_tlb(Monitor *mon, const QDict *qdict) for_each_pte(cs, &mem_print_tlb, &state, false, false); } -static void mem_print(Monitor *mon, CPUArchState *env, - hwaddr *pstart, int *plast_prot, - hwaddr end, int prot) -{ - int prot1; - prot1 = *plast_prot; - if (prot != prot1) { - if (*pstart != -1) { - monitor_printf(mon, HWADDR_FMT_plx "-" HWADDR_FMT_plx " " - HWADDR_FMT_plx " %c%c%c\n", - addr_canonical(env, *pstart), - addr_canonical(env, end), - addr_canonical(env, end - *pstart), - prot1 & PG_USER_MASK ? 'u' : '-', - 'r', - prot1 & PG_RW_MASK ? 'w' : '-'); - } - if (prot != 0) - *pstart = end; - else - *pstart = -1; - *plast_prot = prot; - } -} - -static void mem_info_32(Monitor *mon, CPUArchState *env) +static +bool mem_print(CPUState *cs, struct mem_print_state *state) { - unsigned int l1, l2; - int prot, last_prot; - uint32_t pgd, pde, pte; - hwaddr start, end; - - pgd = env->cr[3] & ~0xfff; - last_prot = 0; - start = -1; - for(l1 = 0; l1 < 1024; l1++) { - cpu_physical_memory_read(pgd + l1 * 4, &pde, 4); - pde = le32_to_cpu(pde); - end = l1 << 22; - if (pde & PG_PRESENT_MASK) { - if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { - prot = pde & (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK); - mem_print(mon, env, &start, &last_prot, end, prot); - } else { - for(l2 = 0; l2 < 1024; l2++) { - cpu_physical_memory_read((pde & ~0xfff) + l2 * 4, &pte, 4); - pte = le32_to_cpu(pte); - end = (l1 << 22) + (l2 << 12); - if (pte & PG_PRESENT_MASK) { - prot = pte & pde & - (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK); - } else { - prot = 0; - } - mem_print(mon, env, &start, &last_prot, end, prot); - } - } - } else { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - } - } - /* Flush last range */ - mem_print(mon, env, &start, &last_prot, (hwaddr)1 << 32, 0); -} + CPUArchState *env = state->env; + int i = 0; -static void mem_info_pae32(Monitor *mon, CPUArchState *env) -{ - unsigned int l1, l2, l3; - int prot, last_prot; - uint64_t pdpe, pde, pte; - uint64_t pdp_addr, pd_addr, pt_addr; - hwaddr start, end; - - pdp_addr = env->cr[3] & ~0x1f; - last_prot = 0; - start = -1; - for (l1 = 0; l1 < 4; l1++) { - cpu_physical_memory_read(pdp_addr + l1 * 8, &pdpe, 8); - pdpe = le64_to_cpu(pdpe); - end = l1 << 30; - if (pdpe & PG_PRESENT_MASK) { - pd_addr = pdpe & 0x3fffffffff000ULL; - for (l2 = 0; l2 < 512; l2++) { - cpu_physical_memory_read(pd_addr + l2 * 8, &pde, 8); - pde = le64_to_cpu(pde); - end = (l1 << 30) + (l2 << 21); - if (pde & PG_PRESENT_MASK) { - if (pde & PG_PSE_MASK) { - prot = pde & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - mem_print(mon, env, &start, &last_prot, end, prot); - } else { - pt_addr = pde & 0x3fffffffff000ULL; - for (l3 = 0; l3 < 512; l3++) { - cpu_physical_memory_read(pt_addr + l3 * 8, &pte, 8); - pte = le64_to_cpu(pte); - end = (l1 << 30) + (l2 << 21) + (l3 << 12); - if (pte & PG_PRESENT_MASK) { - prot = pte & pde & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - } else { - prot = 0; - } - mem_print(mon, env, &start, &last_prot, end, prot); - } - } - } else { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - } - } - } else { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - } - } - /* Flush last range */ - mem_print(mon, env, &start, &last_prot, (hwaddr)1 << 32, 0); -} - - -#ifdef TARGET_X86_64 -static void mem_info_la48(Monitor *mon, CPUArchState *env) -{ - int prot, last_prot; - uint64_t l1, l2, l3, l4; - uint64_t pml4e, pdpe, pde, pte; - uint64_t pml4_addr, pdp_addr, pd_addr, pt_addr, start, end; - - pml4_addr = env->cr[3] & 0x3fffffffff000ULL; - last_prot = 0; - start = -1; - for (l1 = 0; l1 < 512; l1++) { - cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8); - pml4e = le64_to_cpu(pml4e); - end = l1 << 39; - if (pml4e & PG_PRESENT_MASK) { - pdp_addr = pml4e & 0x3fffffffff000ULL; - for (l2 = 0; l2 < 512; l2++) { - cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8); - pdpe = le64_to_cpu(pdpe); - end = (l1 << 39) + (l2 << 30); - if (pdpe & PG_PRESENT_MASK) { - if (pdpe & PG_PSE_MASK) { - prot = pdpe & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - prot &= pml4e; - mem_print(mon, env, &start, &last_prot, end, prot); - } else { - pd_addr = pdpe & 0x3fffffffff000ULL; - for (l3 = 0; l3 < 512; l3++) { - cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8); - pde = le64_to_cpu(pde); - end = (l1 << 39) + (l2 << 30) + (l3 << 21); - if (pde & PG_PRESENT_MASK) { - if (pde & PG_PSE_MASK) { - prot = pde & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - prot &= pml4e & pdpe; - mem_print(mon, env, &start, - &last_prot, end, prot); - } else { - pt_addr = pde & 0x3fffffffff000ULL; - for (l4 = 0; l4 < 512; l4++) { - cpu_physical_memory_read(pt_addr - + l4 * 8, - &pte, 8); - pte = le64_to_cpu(pte); - end = (l1 << 39) + (l2 << 30) + - (l3 << 21) + (l4 << 12); - if (pte & PG_PRESENT_MASK) { - prot = pte & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - prot &= pml4e & pdpe & pde; - } else { - prot = 0; - } - mem_print(mon, env, &start, - &last_prot, end, prot); - } - } - } else { - prot = 0; - mem_print(mon, env, &start, - &last_prot, end, prot); - } - } - } - } else { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - } - } - } else { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); + /* We need to figure out the lowest populated level */ + for ( ; i < state->max_height; i++) { + if (state->vstart[i] != -1) { + break; } } - /* Flush last range */ - mem_print(mon, env, &start, &last_prot, (hwaddr)1 << 48, 0); -} -static void mem_info_la57(Monitor *mon, CPUArchState *env) -{ - int prot, last_prot; - uint64_t l0, l1, l2, l3, l4; - uint64_t pml5e, pml4e, pdpe, pde, pte; - uint64_t pml5_addr, pml4_addr, pdp_addr, pd_addr, pt_addr, start, end; - - pml5_addr = env->cr[3] & 0x3fffffffff000ULL; - last_prot = 0; - start = -1; - for (l0 = 0; l0 < 512; l0++) { - cpu_physical_memory_read(pml5_addr + l0 * 8, &pml5e, 8); - pml5e = le64_to_cpu(pml5e); - end = l0 << 48; - if (!(pml5e & PG_PRESENT_MASK)) { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - continue; - } + hwaddr vstart = state->vstart[i]; + hwaddr end = state->vend[i] + mmu_pte_leaf_page_size(cs, i); + int prot = ent2prot(state->ent[i]); - pml4_addr = pml5e & 0x3fffffffff000ULL; - for (l1 = 0; l1 < 512; l1++) { - cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8); - pml4e = le64_to_cpu(pml4e); - end = (l0 << 48) + (l1 << 39); - if (!(pml4e & PG_PRESENT_MASK)) { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - continue; - } - - pdp_addr = pml4e & 0x3fffffffff000ULL; - for (l2 = 0; l2 < 512; l2++) { - cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8); - pdpe = le64_to_cpu(pdpe); - end = (l0 << 48) + (l1 << 39) + (l2 << 30); - if (pdpe & PG_PRESENT_MASK) { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - continue; - } - - if (pdpe & PG_PSE_MASK) { - prot = pdpe & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - prot &= pml5e & pml4e; - mem_print(mon, env, &start, &last_prot, end, prot); - continue; - } - pd_addr = pdpe & 0x3fffffffff000ULL; - for (l3 = 0; l3 < 512; l3++) { - cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8); - pde = le64_to_cpu(pde); - end = (l0 << 48) + (l1 << 39) + (l2 << 30) + (l3 << 21); - if (pde & PG_PRESENT_MASK) { - prot = 0; - mem_print(mon, env, &start, &last_prot, end, prot); - continue; - } - - if (pde & PG_PSE_MASK) { - prot = pde & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - prot &= pml5e & pml4e & pdpe; - mem_print(mon, env, &start, &last_prot, end, prot); - continue; - } - - pt_addr = pde & 0x3fffffffff000ULL; - for (l4 = 0; l4 < 512; l4++) { - cpu_physical_memory_read(pt_addr + l4 * 8, &pte, 8); - pte = le64_to_cpu(pte); - end = (l0 << 48) + (l1 << 39) + (l2 << 30) + - (l3 << 21) + (l4 << 12); - if (pte & PG_PRESENT_MASK) { - prot = pte & (PG_USER_MASK | PG_RW_MASK | - PG_PRESENT_MASK); - prot &= pml5e & pml4e & pdpe & pde; - } else { - prot = 0; - } - mem_print(mon, env, &start, &last_prot, end, prot); - } - } - } - } - } - /* Flush last range */ - mem_print(mon, env, &start, &last_prot, (hwaddr)1 << 57, 0); + monitor_printf(state->mon, HWADDR_FMT_plx "-" HWADDR_FMT_plx " " + HWADDR_FMT_plx " %c%c%c\n", + addr_canonical(env, vstart), + addr_canonical(env, end), + addr_canonical(env, end - vstart), + prot & PG_USER_MASK ? 'u' : '-', + 'r', + prot & PG_RW_MASK ? 'w' : '-'); + return true; } -#endif /* TARGET_X86_64 */ void hmp_info_mem(Monitor *mon, const QDict *qdict) { - CPUArchState *env; + CPUState *cs; + struct mem_print_state state; - env = mon_get_cpu_env(mon); - if (!env) { - monitor_printf(mon, "No CPU available\n"); + if (!init_iterator(mon, &state)) { return; } + state.flusher = mem_print; - if (!(env->cr[0] & CR0_PG_MASK)) { - monitor_printf(mon, "PG disabled\n"); + cs = mon_get_cpu(mon); + if (!cs) { + monitor_printf(mon, "Unable to get CPUState. Internal error\n"); return; } - if (env->cr[4] & CR4_PAE_MASK) { -#ifdef TARGET_X86_64 - if (env->hflags & HF_LMA_MASK) { - if (env->cr[4] & CR4_LA57_MASK) { - mem_info_la57(mon, env); - } else { - mem_info_la48(mon, env); - } - } else -#endif - { - mem_info_pae32(mon, env); - } - } else { - mem_info_32(mon, env); - } + + /** + * We must visit interior entries to update prot + */ + for_each_pte(cs, &compressing_iterator, &state, true, false); + + /* Flush the last entry, if needed */ + mem_print(cs, &state); } void hmp_mce(Monitor *mon, const QDict *qdict)