Messages in this thread | | | Subject | Re: [PATCH v11 09/13] x86, sgx: basic routines for enclave page cache | From | Jarkko Sakkinen <> | Date | Mon, 25 Jun 2018 12:01:12 +0300 |
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On Tue, 2018-06-19 at 08:32 -0700, Dave Hansen wrote: > > For 32-bit (albeit not supported at this point) it makes sense to always > > use kmap_atomic_pfn() as the virtua address area is very limited. > > That makes no sense. 32-bit kernels have plenty of virtual address > space if not using highmem.
AFAIK the vmalloc area is located in the last 128MB that and ioremap() of EPC would consume a big portion of that.
> > KVM works only with writable MSRs. Driver works both with writable > > and read-only MSRs. > > Could you help with my confusion by documenting this a bit?
Sure.
/Jarkko
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