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-rw-r--r--include/exec/cpu_ldst.h23
-rw-r--r--include/exec/cpu_ldst_useronly_template.h12
-rw-r--r--include/exec/memory.h31
-rw-r--r--include/exec/ram_addr.h28
-rw-r--r--include/qemu/pmem.h36
5 files changed, 115 insertions, 15 deletions
diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h
index 0f2cb717b1..41ed0526e2 100644
--- a/include/exec/cpu_ldst.h
+++ b/include/exec/cpu_ldst.h
@@ -48,8 +48,19 @@
#define CPU_LDST_H
#if defined(CONFIG_USER_ONLY)
+/* sparc32plus has 64bit long but 32bit space address
+ * this can make bad result with g2h() and h2g()
+ */
+#if TARGET_VIRT_ADDR_SPACE_BITS <= 32
+typedef uint32_t abi_ptr;
+#define TARGET_ABI_FMT_ptr "%x"
+#else
+typedef uint64_t abi_ptr;
+#define TARGET_ABI_FMT_ptr "%"PRIx64
+#endif
+
/* All direct uses of g2h and h2g need to go away for usermode softmmu. */
-#define g2h(x) ((void *)((unsigned long)(target_ulong)(x) + guest_base))
+#define g2h(x) ((void *)((unsigned long)(abi_ptr)(x) + guest_base))
#define guest_addr_valid(x) ((x) <= GUEST_ADDR_MAX)
#define h2g_valid(x) guest_addr_valid((unsigned long)(x) - guest_base)
@@ -61,7 +72,7 @@ static inline int guest_range_valid(unsigned long start, unsigned long len)
#define h2g_nocheck(x) ({ \
unsigned long __ret = (unsigned long)(x) - guest_base; \
- (abi_ulong)__ret; \
+ (abi_ptr)__ret; \
})
#define h2g(x) ({ \
@@ -69,7 +80,9 @@ static inline int guest_range_valid(unsigned long start, unsigned long len)
assert(h2g_valid(x)); \
h2g_nocheck(x); \
})
-
+#else
+typedef target_ulong abi_ptr;
+#define TARGET_ABI_FMT_ptr TARGET_ABI_FMT_lx
#endif
#if defined(CONFIG_USER_ONLY)
@@ -397,7 +410,7 @@ extern __thread uintptr_t helper_retaddr;
* This is the equivalent of the initial fast-path code used by
* TCG backends for guest load and store accesses.
*/
-static inline void *tlb_vaddr_to_host(CPUArchState *env, target_ulong addr,
+static inline void *tlb_vaddr_to_host(CPUArchState *env, abi_ptr addr,
int access_type, int mmu_idx)
{
#if defined(CONFIG_USER_ONLY)
@@ -405,7 +418,7 @@ static inline void *tlb_vaddr_to_host(CPUArchState *env, target_ulong addr,
#else
int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
CPUTLBEntry *tlbentry = &env->tlb_table[mmu_idx][index];
- target_ulong tlb_addr;
+ abi_ptr tlb_addr;
uintptr_t haddr;
switch (access_type) {
diff --git a/include/exec/cpu_ldst_useronly_template.h b/include/exec/cpu_ldst_useronly_template.h
index e30e58ed4a..0fd6019af0 100644
--- a/include/exec/cpu_ldst_useronly_template.h
+++ b/include/exec/cpu_ldst_useronly_template.h
@@ -62,7 +62,7 @@
#endif
static inline RES_TYPE
-glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
+glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr)
{
#if !defined(CODE_ACCESS)
trace_guest_mem_before_exec(
@@ -74,7 +74,7 @@ glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
static inline RES_TYPE
glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
- target_ulong ptr,
+ abi_ptr ptr,
uintptr_t retaddr)
{
RES_TYPE ret;
@@ -86,7 +86,7 @@ glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
#if DATA_SIZE <= 2
static inline int
-glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
+glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr)
{
#if !defined(CODE_ACCESS)
trace_guest_mem_before_exec(
@@ -98,7 +98,7 @@ glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
static inline int
glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
- target_ulong ptr,
+ abi_ptr ptr,
uintptr_t retaddr)
{
int ret;
@@ -111,7 +111,7 @@ glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
#ifndef CODE_ACCESS
static inline void
-glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
+glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, abi_ptr ptr,
RES_TYPE v)
{
#if !defined(CODE_ACCESS)
@@ -124,7 +124,7 @@ glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
static inline void
glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
- target_ulong ptr,
+ abi_ptr ptr,
RES_TYPE v,
uintptr_t retaddr)
{
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 6863656182..eb4f2fb249 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -103,6 +103,29 @@ struct IOMMUNotifier {
};
typedef struct IOMMUNotifier IOMMUNotifier;
+/* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */
+#define RAM_PREALLOC (1 << 0)
+
+/* RAM is mmap-ed with MAP_SHARED */
+#define RAM_SHARED (1 << 1)
+
+/* Only a portion of RAM (used_length) is actually used, and migrated.
+ * This used_length size can change across reboots.
+ */
+#define RAM_RESIZEABLE (1 << 2)
+
+/* UFFDIO_ZEROPAGE is available on this RAMBlock to atomically
+ * zero the page and wake waiting processes.
+ * (Set during postcopy)
+ */
+#define RAM_UF_ZEROPAGE (1 << 3)
+
+/* RAM can be migrated */
+#define RAM_MIGRATABLE (1 << 4)
+
+/* RAM is a persistent kind memory */
+#define RAM_PMEM (1 << 5)
+
static inline void iommu_notifier_init(IOMMUNotifier *n, IOMMUNotify fn,
IOMMUNotifierFlag flags,
hwaddr start, hwaddr end,
@@ -611,6 +634,7 @@ void memory_region_init_resizeable_ram(MemoryRegion *mr,
void *host),
Error **errp);
#ifdef __linux__
+
/**
* memory_region_init_ram_from_file: Initialize RAM memory region with a
* mmap-ed backend.
@@ -622,7 +646,10 @@ void memory_region_init_resizeable_ram(MemoryRegion *mr,
* @size: size of the region.
* @align: alignment of the region base address; if 0, the default alignment
* (getpagesize()) will be used.
- * @share: %true if memory must be mmaped with the MAP_SHARED flag
+ * @ram_flags: Memory region features:
+ * - RAM_SHARED: memory must be mmaped with the MAP_SHARED flag
+ * - RAM_PMEM: the memory is persistent memory
+ * Other bits are ignored now.
* @path: the path in which to allocate the RAM.
* @errp: pointer to Error*, to store an error if it happens.
*
@@ -634,7 +661,7 @@ void memory_region_init_ram_from_file(MemoryRegion *mr,
const char *name,
uint64_t size,
uint64_t align,
- bool share,
+ uint32_t ram_flags,
const char *path,
Error **errp);
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
index cf4ce06248..3abb639056 100644
--- a/include/exec/ram_addr.h
+++ b/include/exec/ram_addr.h
@@ -70,13 +70,37 @@ static inline unsigned long int ramblock_recv_bitmap_offset(void *host_addr,
return host_addr_offset >> TARGET_PAGE_BITS;
}
+bool ramblock_is_pmem(RAMBlock *rb);
+
long qemu_getrampagesize(void);
+
+/**
+ * qemu_ram_alloc_from_file,
+ * qemu_ram_alloc_from_fd: Allocate a ram block from the specified backing
+ * file or device
+ *
+ * Parameters:
+ * @size: the size in bytes of the ram block
+ * @mr: the memory region where the ram block is
+ * @ram_flags: specify the properties of the ram block, which can be one
+ * or bit-or of following values
+ * - RAM_SHARED: mmap the backing file or device with MAP_SHARED
+ * - RAM_PMEM: the backend @mem_path or @fd is persistent memory
+ * Other bits are ignored.
+ * @mem_path or @fd: specify the backing file or device
+ * @errp: pointer to Error*, to store an error if it happens
+ *
+ * Return:
+ * On success, return a pointer to the ram block.
+ * On failure, return NULL.
+ */
RAMBlock *qemu_ram_alloc_from_file(ram_addr_t size, MemoryRegion *mr,
- bool share, const char *mem_path,
+ uint32_t ram_flags, const char *mem_path,
Error **errp);
RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
- bool share, int fd,
+ uint32_t ram_flags, int fd,
Error **errp);
+
RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
MemoryRegion *mr, Error **errp);
RAMBlock *qemu_ram_alloc(ram_addr_t size, bool share, MemoryRegion *mr,
diff --git a/include/qemu/pmem.h b/include/qemu/pmem.h
new file mode 100644
index 0000000000..dfb6d0da62
--- /dev/null
+++ b/include/qemu/pmem.h
@@ -0,0 +1,36 @@
+/*
+ * QEMU header file for libpmem.
+ *
+ * Copyright (c) 2018 Intel Corporation.
+ *
+ * Author: Haozhong Zhang <address@hidden>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef QEMU_PMEM_H
+#define QEMU_PMEM_H
+
+#ifdef CONFIG_LIBPMEM
+#include <libpmem.h>
+#else /* !CONFIG_LIBPMEM */
+
+static inline void *
+pmem_memcpy_persist(void *pmemdest, const void *src, size_t len)
+{
+ /* If 'pmem' option is 'on', we should always have libpmem support,
+ or qemu will report a error and exit, never come here. */
+ g_assert_not_reached();
+ return NULL;
+}
+
+static inline void
+pmem_persist(const void *addr, size_t len)
+{
+ g_assert_not_reached();
+}
+
+#endif /* CONFIG_LIBPMEM */
+
+#endif /* !QEMU_PMEM_H */
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-04-24 02:15:18 +0200