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Re: [Qemu-devel] [PATCH 8/8] exec: add read callback for notdirty memory
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH 8/8] exec: add read callback for notdirty memory region |
Date: |
Thu, 13 Sep 2018 12:53:20 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 |
On 12/09/2018 18:01, Li Qiang wrote:
> From: Li Qiang <address@hidden>
>
> Signed-off-by: Li Qiang <address@hidden>
This cannot happen, since TLB_NOTDIRTY is only added to the addr_write
member (see accel/tcg/cputlb.c).
Paolo
> ---
> exec.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/exec.c b/exec.c
> index 6826c8337d..3cd5ad2cae 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -2681,6 +2681,11 @@ void memory_notdirty_write_complete(NotDirtyInfo *ndi)
> }
> }
>
> +static uint64_t notdirty_mem_read(void *opaque, hwaddr addr, unsigned size)
> +{
> + return 0;
> +}
> +
> /* Called within RCU critical section. */
> static void notdirty_mem_write(void *opaque, hwaddr ram_addr,
> uint64_t val, unsigned size)
> @@ -2702,6 +2707,7 @@ static bool notdirty_mem_accepts(void *opaque, hwaddr
> addr,
> }
>
> static const MemoryRegionOps notdirty_mem_ops = {
> + .read = notdirty_mem_read,
> .write = notdirty_mem_write,
> .valid.accepts = notdirty_mem_accepts,
> .endianness = DEVICE_NATIVE_ENDIAN,
> @@ -2965,6 +2971,7 @@ static uint16_t dummy_section(PhysPageMap *map,
> FlatView *fv, MemoryRegion *mr)
> return phys_section_add(map, §ion);
> }
>
> +
> static void readonly_mem_write(void *opaque, hwaddr addr,
> uint64_t val, unsigned size)
> {
>
- [Qemu-devel] [PATCH 2/8] hw: debugexit: add read callback, (continued)
- [Qemu-devel] [PATCH 2/8] hw: debugexit: add read callback, Li Qiang, 2018/09/12
- [Qemu-devel] [PATCH 1/8] fw_cfg_mem: add read memory region callback, Li Qiang, 2018/09/12
- [Qemu-devel] [PATCH 4/8] hw: pc-testdev: add read memory region callback, Li Qiang, 2018/09/12
- [Qemu-devel] [PATCH 3/8] hw: hyperv_testdev: add read callback, Li Qiang, 2018/09/12
- [Qemu-devel] [PATCH 5/8] hw: designware: add read memory region callback, Li Qiang, 2018/09/12
- [Qemu-devel] [PATCH 6/8] hw: pvrdma: add read memory region callback, Li Qiang, 2018/09/12
- [Qemu-devel] [PATCH 8/8] exec: add read callback for notdirty memory region, Li Qiang, 2018/09/12
- Re: [Qemu-devel] [PATCH 8/8] exec: add read callback for notdirty memory region,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 7/8] hw: sun4c: add read memory region callback, Li Qiang, 2018/09/12
- Re: [Qemu-devel] [PATCH 0/8] Add missed read callback for some memory region, Philippe Mathieu-Daudé, 2018/09/12