[PATCH qemu 1/7] hvf: move memory related functions from hvf-accel-ops.c to hvf-mem.c

[~ubzeme]

From: Yan-Jie Wang <ubzeme@gmail.com>

Signed-off-by: Yan-Jie Wang <ubzeme@gmail.com>
---
 accel/hvf/hvf-accel-ops.c | 220 +--------------------------------
 accel/hvf/hvf-mem.c       | 252 ++++++++++++++++++++++++++++++++++++++
 accel/hvf/meson.build     |   1 +
 include/sysemu/hvf_int.h  |   2 +
 4 files changed, 256 insertions(+), 219 deletions(-)
 create mode 100644 accel/hvf/hvf-mem.c

diff --git a/accel/hvf/hvf-accel-ops.c b/accel/hvf/hvf-accel-ops.c
index 54457c76c2..50a563bfe0 100644
--- a/accel/hvf/hvf-accel-ops.c
+++ b/accel/hvf/hvf-accel-ops.c
@@ -48,7 +48,6 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu/error-report.h"
 #include "qemu/main-loop.h"
 #include "exec/address-spaces.h"
 #include "exec/exec-all.h"
@@ -64,143 +63,6 @@ HVFState *hvf_state;
 #define HV_VM_DEFAULT NULL
 #endif
 
-/* Memory slots */
-
-hvf_slot *hvf_find_overlap_slot(uint64_t start, uint64_t size)
-{
-    hvf_slot *slot;
-    int x;
-    for (x = 0; x < hvf_state->num_slots; ++x) {
-        slot = &hvf_state->slots[x];
-        if (slot->size && start < (slot->start + slot->size) &&
-            (start + size) > slot->start) {
-            return slot;
-        }
-    }
-    return NULL;
-}
-
-struct mac_slot {
-    int present;
-    uint64_t size;
-    uint64_t gpa_start;
-    uint64_t gva;
-};
-
-struct mac_slot mac_slots[32];
-
-static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags)
-{
-    struct mac_slot *macslot;
-    hv_return_t ret;
-
-    macslot = &mac_slots[slot->slot_id];
-
-    if (macslot->present) {
-        if (macslot->size != slot->size) {
-            macslot->present = 0;
-            ret = hv_vm_unmap(macslot->gpa_start, macslot->size);
-            assert_hvf_ok(ret);
-        }
-    }
-
-    if (!slot->size) {
-        return 0;
-    }
-
-    macslot->present = 1;
-    macslot->gpa_start = slot->start;
-    macslot->size = slot->size;
-    ret = hv_vm_map(slot->mem, slot->start, slot->size, flags);
-    assert_hvf_ok(ret);
-    return 0;
-}
-
-static void hvf_set_phys_mem(MemoryRegionSection *section, bool add)
-{
-    hvf_slot *mem;
-    MemoryRegion *area = section->mr;
-    bool writeable = !area->readonly && !area->rom_device;
-    hv_memory_flags_t flags;
-    uint64_t page_size = qemu_real_host_page_size;
-
-    if (!memory_region_is_ram(area)) {
-        if (writeable) {
-            return;
-        } else if (!memory_region_is_romd(area)) {
-            /*
-             * If the memory device is not in romd_mode, then we actually want
-             * to remove the hvf memory slot so all accesses will trap.
-             */
-             add = false;
-        }
-    }
-
-    if (!QEMU_IS_ALIGNED(int128_get64(section->size), page_size) ||
-        !QEMU_IS_ALIGNED(section->offset_within_address_space, page_size)) {
-        /* Not page aligned, so we can not map as RAM */
-        add = false;
-    }
-
-    mem = hvf_find_overlap_slot(
-            section->offset_within_address_space,
-            int128_get64(section->size));
-
-    if (mem && add) {
-        if (mem->size == int128_get64(section->size) &&
-            mem->start == section->offset_within_address_space &&
-            mem->mem == (memory_region_get_ram_ptr(area) +
-            section->offset_within_region)) {
-            return; /* Same region was attempted to register, go away. */
-        }
-    }
-
-    /* Region needs to be reset. set the size to 0 and remap it. */
-    if (mem) {
-        mem->size = 0;
-        if (do_hvf_set_memory(mem, 0)) {
-            error_report("Failed to reset overlapping slot");
-            abort();
-        }
-    }
-
-    if (!add) {
-        return;
-    }
-
-    if (area->readonly ||
-        (!memory_region_is_ram(area) && memory_region_is_romd(area))) {
-        flags = HV_MEMORY_READ | HV_MEMORY_EXEC;
-    } else {
-        flags = HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC;
-    }
-
-    /* Now make a new slot. */
-    int x;
-
-    for (x = 0; x < hvf_state->num_slots; ++x) {
-        mem = &hvf_state->slots[x];
-        if (!mem->size) {
-            break;
-        }
-    }
-
-    if (x == hvf_state->num_slots) {
-        error_report("No free slots");
-        abort();
-    }
-
-    mem->size = int128_get64(section->size);
-    mem->mem = memory_region_get_ram_ptr(area) + section->offset_within_region;
-    mem->start = section->offset_within_address_space;
-    mem->region = area;
-
-    if (do_hvf_set_memory(mem, flags)) {
-        error_report("Error registering new memory slot");
-        abort();
-    }
-}
-
 static void do_hvf_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data arg)
 {
     if (!cpu->vcpu_dirty) {
@@ -238,79 +100,6 @@ static void hvf_cpu_synchronize_pre_loadvm(CPUState *cpu)
     run_on_cpu(cpu, do_hvf_cpu_synchronize_set_dirty, RUN_ON_CPU_NULL);
 }
 
-static void hvf_set_dirty_tracking(MemoryRegionSection *section, bool on)
-{
-    hvf_slot *slot;
-
-    slot = hvf_find_overlap_slot(
-            section->offset_within_address_space,
-            int128_get64(section->size));
-
-    /* protect region against writes; begin tracking it */
-    if (on) {
-        slot->flags |= HVF_SLOT_LOG;
-        hv_vm_protect((uintptr_t)slot->start, (size_t)slot->size,
-                      HV_MEMORY_READ | HV_MEMORY_EXEC);
-    /* stop tracking region*/
-    } else {
-        slot->flags &= ~HVF_SLOT_LOG;
-        hv_vm_protect((uintptr_t)slot->start, (size_t)slot->size,
-                      HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC);
-    }
-}
-
-static void hvf_log_start(MemoryListener *listener,
-                          MemoryRegionSection *section, int old, int new)
-{
-    if (old != 0) {
-        return;
-    }
-
-    hvf_set_dirty_tracking(section, 1);
-}
-
-static void hvf_log_stop(MemoryListener *listener,
-                         MemoryRegionSection *section, int old, int new)
-{
-    if (new != 0) {
-        return;
-    }
-
-    hvf_set_dirty_tracking(section, 0);
-}
-
-static void hvf_log_sync(MemoryListener *listener,
-                         MemoryRegionSection *section)
-{
-    /*
-     * sync of dirty pages is handled elsewhere; just make sure we keep
-     * tracking the region.
-     */
-    hvf_set_dirty_tracking(section, 1);
-}
-
-static void hvf_region_add(MemoryListener *listener,
-                           MemoryRegionSection *section)
-{
-    hvf_set_phys_mem(section, true);
-}
-
-static void hvf_region_del(MemoryListener *listener,
-                           MemoryRegionSection *section)
-{
-    hvf_set_phys_mem(section, false);
-}
-
-static MemoryListener hvf_memory_listener = {
-    .name = "hvf",
-    .priority = 10,
-    .region_add = hvf_region_add,
-    .region_del = hvf_region_del,
-    .log_start = hvf_log_start,
-    .log_stop = hvf_log_stop,
-    .log_sync = hvf_log_sync,
-};
-
 static void dummy_signal(int sig)
 {
 }
@@ -319,7 +108,6 @@ bool hvf_allowed;
 
 static int hvf_accel_init(MachineState *ms)
 {
-    int x;
     hv_return_t ret;
     HVFState *s;
 
@@ -328,14 +116,8 @@ static int hvf_accel_init(MachineState *ms)
 
     s = g_new0(HVFState, 1);
 
-    s->num_slots = ARRAY_SIZE(s->slots);
-    for (x = 0; x < s->num_slots; ++x) {
-        s->slots[x].size = 0;
-        s->slots[x].slot_id = x;
-    }
-
     hvf_state = s;
-    memory_listener_register(&hvf_memory_listener, &address_space_memory);
+    hvf_init_memslots();
 
     return hvf_arch_init();
 }
diff --git a/accel/hvf/hvf-mem.c b/accel/hvf/hvf-mem.c
new file mode 100644
index 0000000000..3712731ed9
--- /dev/null
+++ b/accel/hvf/hvf-mem.c
@@ -0,0 +1,252 @@
+/*
+ * Copyright 2008 IBM Corporation
+ *           2008 Red Hat, Inc.
+ * Copyright 2011 Intel Corporation
+ * Copyright 2016 Veertu, Inc.
+ * Copyright 2017 The Android Open Source Project
+ *
+ * QEMU Hypervisor.framework support
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/error-report.h"
+#include "exec/address-spaces.h"
+#include "sysemu/hvf.h"
+#include "sysemu/hvf_int.h"
+
+/* Memory slots */
+
+hvf_slot *hvf_find_overlap_slot(uint64_t start, uint64_t size)
+{
+    hvf_slot *slot;
+    int x;
+    for (x = 0; x < hvf_state->num_slots; ++x) {
+        slot = &hvf_state->slots[x];
+        if (slot->size && start < (slot->start + slot->size) &&
+            (start + size) > slot->start) {
+            return slot;
+        }
+    }
+    return NULL;
+}
+
+struct mac_slot {
+    int present;
+    uint64_t size;
+    uint64_t gpa_start;
+    uint64_t gva;
+};
+
+struct mac_slot mac_slots[32];
+
+static int do_hvf_set_memory(hvf_slot *slot, hv_memory_flags_t flags)
+{
+    struct mac_slot *macslot;
+    hv_return_t ret;
+
+    macslot = &mac_slots[slot->slot_id];
+
+    if (macslot->present) {
+        if (macslot->size != slot->size) {
+            macslot->present = 0;
+            ret = hv_vm_unmap(macslot->gpa_start, macslot->size);
+            assert_hvf_ok(ret);
+        }
+    }
+
+    if (!slot->size) {
+        return 0;
+    }
+
+    macslot->present = 1;
+    macslot->gpa_start = slot->start;
+    macslot->size = slot->size;
+    ret = hv_vm_map(slot->mem, slot->start, slot->size, flags);
+    assert_hvf_ok(ret);
+    return 0;
+}
+
+static void hvf_set_phys_mem(MemoryRegionSection *section, bool add)
+{
+    hvf_slot *mem;
+    MemoryRegion *area = section->mr;
+    bool writeable = !area->readonly && !area->rom_device;
+    hv_memory_flags_t flags;
+    uint64_t page_size = qemu_real_host_page_size;
+
+    if (!memory_region_is_ram(area)) {
+        if (writeable) {
+            return;
+        } else if (!memory_region_is_romd(area)) {
+            /*
+             * If the memory device is not in romd_mode, then we actually want
+             * to remove the hvf memory slot so all accesses will trap.
+             */
+             add = false;
+        }
+    }
+
+    if (!QEMU_IS_ALIGNED(int128_get64(section->size), page_size) ||
+        !QEMU_IS_ALIGNED(section->offset_within_address_space, page_size)) {
+        /* Not page aligned, so we can not map as RAM */
+        add = false;
+    }
+
+    mem = hvf_find_overlap_slot(
+            section->offset_within_address_space,
+            int128_get64(section->size));
+
+    if (mem && add) {
+        if (mem->size == int128_get64(section->size) &&
+            mem->start == section->offset_within_address_space &&
+            mem->mem == (memory_region_get_ram_ptr(area) +
+            section->offset_within_region)) {
+            return; /* Same region was attempted to register, go away. */
+        }
+    }
+
+    /* Region needs to be reset. set the size to 0 and remap it. */
+    if (mem) {
+        mem->size = 0;
+        if (do_hvf_set_memory(mem, 0)) {
+            error_report("Failed to reset overlapping slot");
+            abort();
+        }
+    }
+
+    if (!add) {
+        return;
+    }
+
+    if (area->readonly ||
+        (!memory_region_is_ram(area) && memory_region_is_romd(area))) {
+        flags = HV_MEMORY_READ | HV_MEMORY_EXEC;
+    } else {
+        flags = HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC;
+    }
+
+    /* Now make a new slot. */
+    int x;
+
+    for (x = 0; x < hvf_state->num_slots; ++x) {
+        mem = &hvf_state->slots[x];
+        if (!mem->size) {
+            break;
+        }
+    }
+
+    if (x == hvf_state->num_slots) {
+        error_report("No free slots");
+        abort();
+    }
+
+    mem->size = int128_get64(section->size);
+    mem->mem = memory_region_get_ram_ptr(area) + section->offset_within_region;
+    mem->start = section->offset_within_address_space;
+    mem->region = area;
+
+    if (do_hvf_set_memory(mem, flags)) {
+        error_report("Error registering new memory slot");
+        abort();
+    }
+}
+
+
+static void hvf_set_dirty_tracking(MemoryRegionSection *section, bool on)
+{
+    hvf_slot *slot;
+
+    slot = hvf_find_overlap_slot(
+            section->offset_within_address_space,
+            int128_get64(section->size));
+
+    /* protect region against writes; begin tracking it */
+    if (on) {
+        slot->flags |= HVF_SLOT_LOG;
+        hv_vm_protect((uintptr_t)slot->start, (size_t)slot->size,
+                      HV_MEMORY_READ | HV_MEMORY_EXEC);
+    /* stop tracking region*/
+    } else {
+        slot->flags &= ~HVF_SLOT_LOG;
+        hv_vm_protect((uintptr_t)slot->start, (size_t)slot->size,
+                      HV_MEMORY_READ | HV_MEMORY_WRITE | HV_MEMORY_EXEC);
+    }
+}
+
+static void hvf_log_start(MemoryListener *listener,
+                          MemoryRegionSection *section, int old, int new)
+{
+    if (old != 0) {
+        return;
+    }
+
+    hvf_set_dirty_tracking(section, 1);
+}
+
+static void hvf_log_stop(MemoryListener *listener,
+                         MemoryRegionSection *section, int old, int new)
+{
+    if (new != 0) {
+        return;
+    }
+
+    hvf_set_dirty_tracking(section, 0);
+}
+
+static void hvf_log_sync(MemoryListener *listener,
+                         MemoryRegionSection *section)
+{
+    /*
+     * sync of dirty pages is handled elsewhere; just make sure we keep
+     * tracking the region.
+     */
+    hvf_set_dirty_tracking(section, 1);
+}
+
+static void hvf_region_add(MemoryListener *listener,
+                           MemoryRegionSection *section)
+{
+    hvf_set_phys_mem(section, true);
+}
+
+static void hvf_region_del(MemoryListener *listener,
+                           MemoryRegionSection *section)
+{
+    hvf_set_phys_mem(section, false);
+}
+
+static MemoryListener hvf_memory_listener = {
+    .name = "hvf",
+    .priority = 10,
+    .region_add = hvf_region_add,
+    .region_del = hvf_region_del,
+    .log_start = hvf_log_start,
+    .log_stop = hvf_log_stop,
+    .log_sync = hvf_log_sync,
+};
+
+void hvf_init_memslots(void)
+{
+    int x;
+    HVFState *s = hvf_state;
+
+    s->num_slots = ARRAY_SIZE(s->slots);
+    for (x = 0; x < s->num_slots; ++x) {
+        s->slots[x].size = 0;
+        s->slots[x].slot_id = x;
+    }
+
+    memory_listener_register(&hvf_memory_listener, &address_space_memory);
+}
diff --git a/accel/hvf/meson.build b/accel/hvf/meson.build
index fc52cb7843..7e7a2034f1 100644
--- a/accel/hvf/meson.build
+++ b/accel/hvf/meson.build
@@ -2,6 +2,7 @@ hvf_ss = ss.source_set()
 hvf_ss.add(files(
   'hvf-all.c',
   'hvf-accel-ops.c',
+  'hvf-mem.c',
 ))
 
 specific_ss.add_all(when: 'CONFIG_HVF', if_true: hvf_ss)
diff --git a/include/sysemu/hvf_int.h b/include/sysemu/hvf_int.h
index 6545f7cd61..cef20d750d 100644
--- a/include/sysemu/hvf_int.h
+++ b/include/sysemu/hvf_int.h
@@ -65,4 +65,6 @@ int hvf_put_registers(CPUState *);
 int hvf_get_registers(CPUState *);
 void hvf_kick_vcpu_thread(CPUState *cpu);
 
+void hvf_init_memslots(void);
+
 #endif
-- 
2.34.1