Hi,
The Book3S KVM implementation contains one helper function 'kvmppc_ld'
to load data from guest virtual addresses.
Usually, this works fine for me. But this doesn't work when I try to
read data from the shared page (magic page).
/* Writing data on shared page */
u32 * p = (u32 *) (vcpu->arch.shared + 192); /* p becomes the host
address corresponding to guest address of '0xfffff0c0' */
p[0] = 20;
/* Reading data on shared page */
u32 inst = 0;
ulong pc = 0xfffff0c0; /* Or, any other address on the shared page */
r = kvmppc_ld(vcpu, &pc, sizeof(u32), &inst, false);
'inst' still contains '0'. Also, value returned by this call is '0'
which means 'kvmppc_ld' has not failed.
Am I missing something here? If you have any pointers, please let me know.
Regards,
Dushyant
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