Re: switch RAM and ROM mode with memory_region_set_readonly

2021-07-15 Thread Peter Maydell
On Wed, 14 Jul 2021 at 12:13, Hiroko Shimizu wrote: > > Hello, > I want to switch the memory read-only mode with > memory_region_set_readonly() function for writing a value to memory under a > specific condition. I checked that I could switch the mode using > memory_region_set_readonly(), but

how to improve qcow performance?

2021-07-15 Thread Geraldo Netto
Dear Friends, I beg your pardon for such a newbie question But I would like to better understand how to improve the qcow performance I was checking the qemu-img and it seems that the following parameters are the most relevant to optimise the performance, no? 'cache' is the cache mode used to w

Re: TAP Network help with QEMU 6.0.0 Win64

2021-07-15 Thread Brendan Simon (eTRIX)
I've returned to this after 2 months.  I updated OpenVPN TAP drivers to the latest (2.5.3), deleted existing TAP interfaces and created 2 new interfaces. My main issue at the moment is that QEMU segfaults when I specifiy TWO network interfaces.  What am I doing wrong or is there a bug? This

Re: TAP Network help with QEMU 6.0.0 Win64

2021-07-15 Thread Brendan Simon (eTRIX)
I managed to install qemu 6.0.0 via the msys2 package manager and that had the exact same problem.  i.e. works ok with one net device specified but segfaults if two net devices are specified. Bendan. -- On 16/07/2021 12:30 pm, Brendan Simon (eTRIX) wrote: I've returned to this after 2 months.