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    SubjectRe: [PATCH, RFC 52/62] x86/mm: introduce common code for mem encryption
    On Wed, May 08, 2019 at 05:44:12PM +0300, Kirill A. Shutemov wrote:
    > +EXPORT_SYMBOL_GPL(__mem_encrypt_dma_set);
    > +
    > +phys_addr_t __mem_encrypt_dma_clear(phys_addr_t paddr)
    > +{
    > + if (sme_active())
    > + return __sme_clr(paddr);
    > +
    > + return paddr & ~mktme_keyid_mask;
    > +}
    > +EXPORT_SYMBOL_GPL(__mem_encrypt_dma_clear);

    In general nothing related to low-level dma address should ever
    be exposed to modules. What is your intended user for these two?

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