On 06/07/18 21:58, Ján Tomko wrote:
> Does a size of 0 MiB make sense? It's divisible by 1 MiB.
"-global mch.extended-tseg-mbytes=0" makes QEMU behave as if it lacked
the extended TSEG feature; the guest will believe that only the standard
1 / 2 / 8 MB TSEG sizes are available, and pick one of those.
Technically, in QEMU the extended TSEG feature is disabled for older
machine types by setting "mch.extended-tseg-mbytes" to zero:
[include/hw/i386/pc.h]
#define PC_COMPAT_2_9 \
HW_COMPAT_2_9 \
{\
.driver = "mch",\
.property = "extended-tseg-mbytes",\
.value = stringify(0),\
},\
I'm unsure whether this -- i.e., disabling the feature -- is useful to
expose through the domain config. Probably not.
Thanks
Laszlo
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