[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 3/5] exec: Introduce helper to set dirty flags.
This new helper/hook is used in the next patch to add an extra call in a single place. Backport of 51d7a9eb2b64e787c90bea1027308087eac22065 Signed-off-by: Alex Bligh <alex@xxxxxxxxxxx> --- exec.c | 45 +++++++++++++++++---------------------------- 1 files changed, 17 insertions(+), 28 deletions(-) diff --git a/exec.c b/exec.c index 6c206ff..511777b 100644 --- a/exec.c +++ b/exec.c @@ -3951,6 +3951,18 @@ int cpu_memory_rw_debug(CPUState *env, target_ulong addr, } #else + +static void invalidate_and_set_dirty(target_phys_addr_t addr, + target_phys_addr_t length) +{ + if (!cpu_physical_memory_is_dirty(addr)) { + /* invalidate code */ + tb_invalidate_phys_page_range(addr, addr + length, 0); + /* set dirty bit */ + cpu_physical_memory_set_dirty_flags(addr, (0xff & ~CODE_DIRTY_FLAG)); + } +} + void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, int len, int is_write) { @@ -4003,13 +4015,7 @@ void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf, /* RAM case */ ptr = qemu_get_ram_ptr(addr1); memcpy(ptr, buf, l); - if (!cpu_physical_memory_is_dirty(addr1)) { - /* invalidate code */ - tb_invalidate_phys_page_range(addr1, addr1 + l, 0); - /* set dirty bit */ - cpu_physical_memory_set_dirty_flags( - addr1, (0xff & ~CODE_DIRTY_FLAG)); - } + invalidate_and_set_dirty(addr1, l); qemu_put_ram_ptr(ptr); } } else { @@ -4081,6 +4087,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t addr, /* ROM/RAM case */ ptr = qemu_get_ram_ptr(addr1); memcpy(ptr, buf, l); + invalidate_and_set_dirty(addr1, l); qemu_put_ram_ptr(ptr); } len -= l; @@ -4211,13 +4218,7 @@ void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len, l = TARGET_PAGE_SIZE; if (l > access_len) l = access_len; - if (!cpu_physical_memory_is_dirty(addr1)) { - /* invalidate code */ - tb_invalidate_phys_page_range(addr1, addr1 + l, 0); - /* set dirty bit */ - cpu_physical_memory_set_dirty_flags( - addr1, (0xff & ~CODE_DIRTY_FLAG)); - } + invalidate_and_set_dirty(addr1, l); addr1 += l; access_len -= l; } @@ -4561,13 +4562,7 @@ static inline void stl_phys_internal(target_phys_addr_t addr, uint32_t val, stl_p(ptr, val); break; } - if (!cpu_physical_memory_is_dirty(addr1)) { - /* invalidate code */ - tb_invalidate_phys_page_range(addr1, addr1 + 4, 0); - /* set dirty bit */ - cpu_physical_memory_set_dirty_flags(addr1, - (0xff & ~CODE_DIRTY_FLAG)); - } + invalidate_and_set_dirty(addr1, 4); } } @@ -4639,13 +4634,7 @@ static inline void stw_phys_internal(target_phys_addr_t addr, uint32_t val, stw_p(ptr, val); break; } - if (!cpu_physical_memory_is_dirty(addr1)) { - /* invalidate code */ - tb_invalidate_phys_page_range(addr1, addr1 + 2, 0); - /* set dirty bit */ - cpu_physical_memory_set_dirty_flags(addr1, - (0xff & ~CODE_DIRTY_FLAG)); - } + invalidate_and_set_dirty(addr1, 2); } } -- 1.7.4.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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