On Wed, Sep 25, 2019 at 10:36:43AM +0530, Bharata B Rao wrote: > Manage migration of pages betwen normal and secure memory of secure > guest by implementing H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls. > > H_SVM_PAGE_IN: Move the content of a normal page to secure page > H_SVM_PAGE_OUT: Move the content of a secure page to normal page > > Private ZONE_DEVICE memory equal to the amount of secure memory > available in the platform for running secure guests is created. > Whenever a page belonging to the guest becomes secure, a page from > this private device memory is used to represent and track that secure > page on the HV side. The movement of pages between normal and secure > memory is done via migrate_vma_pages() using UV_PAGE_IN and > UV_PAGE_OUT ucalls. > > Signed-off-by: Bharata B Rao <bharata@xxxxxxxxxxxxx> > arch/powerpc/include/asm/hvcall.h | 4 + > arch/powerpc/include/asm/kvm_book3s_uvmem.h | 29 ++ > arch/powerpc/include/asm/kvm_host.h | 13 + > arch/powerpc/include/asm/ultravisor-api.h | 2 + > arch/powerpc/include/asm/ultravisor.h | 14 + > arch/powerpc/kvm/Makefile | 3 + > arch/powerpc/kvm/book3s_hv.c | 20 + > arch/powerpc/kvm/book3s_hv_uvmem.c | 481 ++++++++++++++++++++ > 8 files changed, 566 insertions(+) > create mode 100644 arch/powerpc/include/asm/kvm_book3s_uvmem.h > create mode 100644 arch/powerpc/kvm/book3s_hv_uvmem.c > > diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h > index 11112023e327..2595d0144958 100644 > +++ b/arch/powerpc/include/asm/hvcall.h > @@ -342,6 +342,10 @@ > #define H_TLB_INVALIDATE 0xF808 > #define H_COPY_TOFROM_GUEST 0xF80C > > +/* Platform-specific hcalls used by the Ultravisor */ > +#define H_SVM_PAGE_IN 0xEF00 > +#define H_SVM_PAGE_OUT 0xEF04 > + > /* Values for 2nd argument to H_SET_MODE */ > #define H_SET_MODE_RESOURCE_SET_CIABR 1 > #define H_SET_MODE_RESOURCE_SET_DAWR 2 > diff --git a/arch/powerpc/include/asm/kvm_book3s_uvmem.h b/arch/powerpc/include/asm/kvm_book3s_uvmem.h > new file mode 100644 > index 000000000000..9603c2b48d67 > +++ b/arch/powerpc/include/asm/kvm_book3s_uvmem.h > @@ -0,0 +1,29 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef __POWERPC_KVM_PPC_HMM_H__ > +#define __POWERPC_KVM_PPC_HMM_H__ This is a strange sentinal for a header called kvm_book3s_uvmem.h Jason
