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[Qemu-devel] [RFC] Is it useful to create a seperate address space for c
From: |
Gonglei (Arei) |
Subject: |
[Qemu-devel] [RFC] Is it useful to create a seperate address space for cpu-memory on x86 platform? |
Date: |
Fri, 26 May 2017 09:59:02 +0000 |
Hi all,
I found that the memory consumption increase about 5M since below commit on
Qemu process.
commit 6731d864f80938e404dc3e5eb7f6b76b891e3e43
Author: Peter Crosthwaite <address@hidden>
Date: Thu Jan 21 14:15:06 2016 +0000
qom/cpu: Add MemoryRegion property
Add a MemoryRegion property, which if set is used to construct
the CPU's initial (default) AddressSpace.
Signed-off-by: Peter Crosthwaite <address@hidden>
[PMM: code is moved from qom/cpu.c to exec.c to avoid having to
make qom/cpu.o be a non-common object file; code to use the
MemoryRegion and to default it to system_memory added.]
Signed-off-by: Peter Maydell <address@hidden>
Acked-by: Edgar E. Iglesias <address@hidden>
The result before this commit:
linux-arei:/mnt/sdb/gonglei/opensource/qemu # ps aux|grep qemu
root 12658 17.2 0.0 375996 21412 pts/1 Sl+ 12:53 0:00
./x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.5,accel=kvm,usb=off
-nodefaults
after the commit:
linux-arei:/mnt/sdb/gonglei/opensource/qemu # ps aux|grep qemu
root 23201 17.2 0.0 384196 25736 pts/1 Sl+ 12:54 0:00
./x86_64-softmmu/qemu-system-x86_64 -machine pc-i440fx-2.5,accel=kvm,usb=off
-nodefaults
I couldn't find any benefits on x86 platform (I'm not familiar with ARM), am I
missing something?
And It works well if I revert this commit. Can I?
Thanks,
-Gonglei
- [Qemu-devel] [RFC] Is it useful to create a seperate address space for cpu-memory on x86 platform?,
Gonglei (Arei) <=