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dirty ram page handling fixes

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1559 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-08-21 19:12:28 +00:00
parent 3f20e1ddf2
commit f23db1692b
1 changed files with 31 additions and 18 deletions
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49
exec.c
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@ -1492,12 +1492,12 @@ static void tlb_protect_code(CPUState *env, ram_addr_t ram_addr,
tlb_protect_code1(&env->tlb_write[0][i], vaddr);
tlb_protect_code1(&env->tlb_write[1][i], vaddr);
phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] &= ~CODE_DIRTY_FLAG;
#ifdef USE_KQEMU
if (env->kqemu_enabled) {
kqemu_set_notdirty(env, ram_addr);
}
#endif
phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] &= ~CODE_DIRTY_FLAG;
#if !defined(CONFIG_SOFTMMU)
/* NOTE: as we generated the code for this page, it is already at
@ -1541,19 +1541,23 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
length = end - start;
if (length == 0)
return;
mask = ~dirty_flags;
p = phys_ram_dirty + (start >> TARGET_PAGE_BITS);
len = length >> TARGET_PAGE_BITS;
for(i = 0; i < len; i++)
p[i] &= mask;
env = cpu_single_env;
#ifdef USE_KQEMU
if (env->kqemu_enabled) {
for(i = 0; i < len; i++)
kqemu_set_notdirty(env, (unsigned long)i << TARGET_PAGE_BITS);
ram_addr_t addr;
addr = start;
for(i = 0; i < len; i++) {
kqemu_set_notdirty(env, addr);
addr += TARGET_PAGE_SIZE;
}
}
#endif
mask = ~dirty_flags;
p = phys_ram_dirty + (start >> TARGET_PAGE_BITS);
for(i = 0; i < len; i++)
p[i] &= mask;
/* we modify the TLB cache so that the dirty bit will be set again
when accessing the range */
start1 = start + (unsigned long)phys_ram_base;
@ -1633,8 +1637,6 @@ static inline void tlb_set_dirty(unsigned long addr, target_ulong vaddr)
CPUState *env = cpu_single_env;
int i;
phys_ram_dirty[(addr - (unsigned long)phys_ram_base) >> TARGET_PAGE_BITS] = 0xff;
addr &= TARGET_PAGE_MASK;
i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
tlb_set_dirty1(&env->tlb_write[0][i], addr);
@ -2005,8 +2007,11 @@ static void notdirty_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t
#endif
}
stb_p((uint8_t *)(long)addr, val);
/* we set the page as dirty only if the code has been flushed */
if (dirty_flags & CODE_DIRTY_FLAG)
dirty_flags |= (0xff & ~CODE_DIRTY_FLAG);
phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags;
/* we remove the notdirty callback only if the code has been
flushed */
if (dirty_flags == 0xff)
tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr);
}
@ -2023,8 +2028,11 @@ static void notdirty_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t
#endif
}
stw_p((uint8_t *)(long)addr, val);
/* we set the page as dirty only if the code has been flushed */
if (dirty_flags & CODE_DIRTY_FLAG)
dirty_flags |= (0xff & ~CODE_DIRTY_FLAG);
phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags;
/* we remove the notdirty callback only if the code has been
flushed */
if (dirty_flags == 0xff)
tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr);
}
@ -2041,8 +2049,11 @@ static void notdirty_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t
#endif
}
stl_p((uint8_t *)(long)addr, val);
/* we set the page as dirty only if the code has been flushed */
if (dirty_flags & CODE_DIRTY_FLAG)
dirty_flags |= (0xff & ~CODE_DIRTY_FLAG);
phys_ram_dirty[ram_addr >> TARGET_PAGE_BITS] = dirty_flags;
/* we remove the notdirty callback only if the code has been
flushed */
if (dirty_flags == 0xff)
tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr);
}
@ -2207,7 +2218,8 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
/* invalidate code */
tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
/* set dirty bit */
phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] = 0xff;
phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |=
(0xff & ~CODE_DIRTY_FLAG);
}
}
} else {
@ -2327,7 +2339,8 @@ void stl_phys(target_phys_addr_t addr, uint32_t val)
/* invalidate code */
tb_invalidate_phys_page_range(addr1, addr1 + 4, 0);
/* set dirty bit */
phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] = 0xff;
phys_ram_dirty[addr1 >> TARGET_PAGE_BITS] |=
(0xff & ~CODE_DIRTY_FLAG);
}
}
}