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From 348710ce46ee2ddf02396aad4bd3978c6dfc2a07 Mon Sep 17 00:00:00 2001
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From: Marcel Apfelbaum <marcel.a@redhat.com>
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Date: Sun, 19 Jan 2014 13:07:35 +0100
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Subject: [PATCH 10/11] exec: change well-known physical sections to macros
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RH-Author: Marcel Apfelbaum <marcel.a@redhat.com>
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Message-id: <1390136856-7024-2-git-send-email-marcel.a@redhat.com>
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Patchwork-id: 56810
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O-Subject: [RHEL-7 qemu-kvm PATCH v2 1/2] exec: change well-known physical sections to macros
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Bugzilla: 1003535
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RH-Acked-by: Michael S. Tsirkin <mst@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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From: Liu Ping Fan <qemulist@gmail.com>
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Sections like phys_section_unassigned always have fixed address
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in phys_sections.  Declared as macro, so we can use them
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when having more than one phys_sections array.
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Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
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Signed-off-by: Liu Ping Fan <qemulist@gmail.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit b41aac4f0d17000babd815e088699d58e59917b8)
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Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
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Conflicts:
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	exec.c
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Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
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---
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 exec.c | 42 ++++++++++++++++++++++++------------------
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 1 file changed, 24 insertions(+), 18 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 exec.c |   42 ++++++++++++++++++++++++------------------
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 1 files changed, 24 insertions(+), 18 deletions(-)
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diff --git a/exec.c b/exec.c
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index b16ef4a..01c74cd 100644
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--- a/exec.c
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+++ b/exec.c
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@@ -101,10 +101,10 @@ struct AddressSpaceDispatch {
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 static MemoryRegionSection *phys_sections;
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 static unsigned phys_sections_nb, phys_sections_nb_alloc;
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-static uint16_t phys_section_unassigned;
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-static uint16_t phys_section_notdirty;
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-static uint16_t phys_section_rom;
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-static uint16_t phys_section_watch;
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+#define PHYS_SECTION_UNASSIGNED 0
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+#define PHYS_SECTION_NOTDIRTY 1
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+#define PHYS_SECTION_ROM 2
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+#define PHYS_SECTION_WATCH 3
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 /* Simple allocator for PhysPageEntry nodes */
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 static PhysPageEntry (*phys_map_nodes)[L2_SIZE];
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@@ -168,7 +168,7 @@ static void phys_page_set_level(PhysPageEntry *lp, hwaddr *index,
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         if (level == 0) {
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             for (i = 0; i < L2_SIZE; i++) {
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                 p[i].is_leaf = 1;
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-                p[i].ptr = phys_section_unassigned;
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+                p[i].ptr = PHYS_SECTION_UNASSIGNED;
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             }
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         }
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     } else {
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@@ -204,7 +204,7 @@ MemoryRegionSection *phys_page_find(AddressSpaceDispatch *d, hwaddr index)
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     PhysPageEntry lp = d->phys_map;
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     PhysPageEntry *p;
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     int i;
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-    uint16_t s_index = phys_section_unassigned;
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+    uint16_t s_index = PHYS_SECTION_UNASSIGNED;
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     for (i = P_L2_LEVELS - 1; i >= 0 && !lp.is_leaf; i--) {
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         if (lp.ptr == PHYS_MAP_NODE_NIL) {
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@@ -646,9 +646,9 @@ hwaddr memory_region_section_get_iotlb(CPUArchState *env,
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         iotlb = (memory_region_get_ram_addr(section->mr) & TARGET_PAGE_MASK)
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             + memory_region_section_addr(section, paddr);
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         if (!section->readonly) {
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-            iotlb |= phys_section_notdirty;
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+            iotlb |= PHYS_SECTION_NOTDIRTY;
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         } else {
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-            iotlb |= phys_section_rom;
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+            iotlb |= PHYS_SECTION_ROM;
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         }
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     } else {
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         /* IO handlers are currently passed a physical address.
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@@ -667,7 +667,7 @@ hwaddr memory_region_section_get_iotlb(CPUArchState *env,
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         if (vaddr == (wp->vaddr & TARGET_PAGE_MASK)) {
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             /* Avoid trapping reads of pages with a write breakpoint. */
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             if ((prot & PAGE_WRITE) || (wp->flags & BP_MEM_READ)) {
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-                iotlb = phys_section_watch + paddr;
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+                iotlb = PHYS_SECTION_WATCH + paddr;
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                 *address |= TLB_MMIO;
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                 break;
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             }
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@@ -1722,7 +1722,7 @@ static subpage_t *subpage_init(hwaddr base)
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     printf("%s: %p base " TARGET_FMT_plx " len %08x %d\n", __func__,
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            mmio, base, TARGET_PAGE_SIZE, subpage_memory);
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 #endif
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-    subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, phys_section_unassigned);
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+    subpage_register(mmio, 0, TARGET_PAGE_SIZE-1, PHYS_SECTION_UNASSIGNED);
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     return mmio;
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 }
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@@ -1768,11 +1768,17 @@ static void mem_begin(MemoryListener *listener)
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 static void core_begin(MemoryListener *listener)
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 {
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+    uint16_t n;
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+
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     phys_sections_clear();
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-    phys_section_unassigned = dummy_section(&io_mem_unassigned);
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-    phys_section_notdirty = dummy_section(&io_mem_notdirty);
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-    phys_section_rom = dummy_section(&io_mem_rom);
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-    phys_section_watch = dummy_section(&io_mem_watch);
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+    n = dummy_section(&io_mem_unassigned);
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+    assert(n == PHYS_SECTION_UNASSIGNED);
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+    n = dummy_section(&io_mem_notdirty);
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+    assert(n == PHYS_SECTION_NOTDIRTY);
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+    n = dummy_section(&io_mem_rom);
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+    assert(n == PHYS_SECTION_ROM);
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+    n = dummy_section(&io_mem_watch);
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+    assert(n == PHYS_SECTION_WATCH);
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 }
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 static void tcg_commit(MemoryListener *listener)
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@@ -2440,7 +2446,7 @@ void stl_phys_notdirty(hwaddr addr, uint32_t val)
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     if (!memory_region_is_ram(section->mr) || section->readonly) {
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         addr = memory_region_section_addr(section, addr);
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         if (memory_region_is_ram(section->mr)) {
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-            section = &phys_sections[phys_section_rom];
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+            section = &phys_sections[PHYS_SECTION_ROM];
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         }
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         io_mem_write(section->mr, addr, val, 4);
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     } else {
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@@ -2473,7 +2479,7 @@ void stq_phys_notdirty(hwaddr addr, uint64_t val)
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     if (!memory_region_is_ram(section->mr) || section->readonly) {
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         addr = memory_region_section_addr(section, addr);
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         if (memory_region_is_ram(section->mr)) {
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-            section = &phys_sections[phys_section_rom];
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+            section = &phys_sections[PHYS_SECTION_ROM];
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         }
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 #ifdef TARGET_WORDS_BIGENDIAN
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         io_mem_write(section->mr, addr, val >> 32, 4);
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@@ -2502,7 +2508,7 @@ static inline void stl_phys_internal(hwaddr addr, uint32_t val,
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     if (!memory_region_is_ram(section->mr) || section->readonly) {
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         addr = memory_region_section_addr(section, addr);
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         if (memory_region_is_ram(section->mr)) {
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-            section = &phys_sections[phys_section_rom];
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+            section = &phys_sections[PHYS_SECTION_ROM];
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         }
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 #if defined(TARGET_WORDS_BIGENDIAN)
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         if (endian == DEVICE_LITTLE_ENDIAN) {
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@@ -2569,7 +2575,7 @@ static inline void stw_phys_internal(hwaddr addr, uint32_t val,
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     if (!memory_region_is_ram(section->mr) || section->readonly) {
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         addr = memory_region_section_addr(section, addr);
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         if (memory_region_is_ram(section->mr)) {
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-            section = &phys_sections[phys_section_rom];
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+            section = &phys_sections[PHYS_SECTION_ROM];
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         }
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 #if defined(TARGET_WORDS_BIGENDIAN)
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         if (endian == DEVICE_LITTLE_ENDIAN) {
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-- 
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1.7.1
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