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Re: [Xen-devel] [PATCH] Assorted VMX patches



Leendert van Doorn wrote:
#> - ioemu: Update the address when doing a stosb/stosw/stosl. Without this
#>   patch stosb writes req->count times at the same location req->addr. Not
#>   exactly the intended semantics.
# # The string operations should go to the if (req->pdata_valid) clause.
# Is pdata_valid==0 for your stos* cases?

Yes. stos* only uses a value parameter (al, ax,or eax), so pdata_valid == 0.
Addr, size and count are still valid

ok - makes sense. Though pdata_valid is generally 1 for string operations (this is always true for the port i/o case), this case is an exception.

        -Arun

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