kernel/arch/s390/include/asm/mem_encrypt.h, branch linux-6.2.y

s390/mm: fix virtual-physical address confusion for swiotlb

2022-11-07T13:33:40Z

swiotlb passes virtual addresses to set_memory_encrypted() and set_memory_decrypted(), but uv_remove_shared() and uv_set_shared() expect physical addresses. This currently works, because virtual and physical addresses are the same. Add virt_to_phys() to resolve the virtual-physical confusion. Reported-by: Marc Hartmayer Signed-off-by: Nico Boehr Reviewed-by: Claudio Imbrenda Reviewed-by: Christian Borntraeger Link: https://lore.kernel.org/r/20221107121221.156274-2-nrb@linux.ibm.com Message-Id: <20221107121221.156274-2-nrb@linux.ibm.com> Signed-off-by: Janosch Frank

treewide: Replace the use of mem_encrypt_active() with cc_platform_has()

2021-10-04T09:47:24Z

Replace uses of mem_encrypt_active() with calls to cc_platform_has() with the CC_ATTR_MEM_ENCRYPT attribute. Remove the implementation of mem_encrypt_active() across all arches. For s390, since the default implementation of the cc_platform_has() matches the s390 implementation of mem_encrypt_active(), cc_platform_has() does not need to be implemented in s390 (the config option ARCH_HAS_CC_PLATFORM is not set). Signed-off-by: Tom Lendacky Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20210928191009.32551-9-bp@alien8.de

s390/mm: Remove sev_active() function

2019-08-09T12:52:11Z

All references to sev_active() were moved to arch/x86 so we don't need to define it for s390 anymore. Signed-off-by: Thiago Jung Bauermann Reviewed-by: Christoph Hellwig Reviewed-by: Halil Pasic Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190806044919.10622-7-bauerman@linux.ibm.com

x86, s390/mm: Move sme_active() and sme_me_mask to x86-specific header

2019-08-09T12:52:08Z

Now that generic code doesn't reference them, move sme_active() and sme_me_mask to x86's . Also remove the export for sme_active() since it's only used in files that won't be built as modules. sme_me_mask on the other hand is used in arch/x86/kvm/svm.c (via __sme_set() and __psp_pa()) which can be built as a module so its export needs to stay. Signed-off-by: Thiago Jung Bauermann Reviewed-by: Christoph Hellwig Reviewed-by: Tom Lendacky Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190806044919.10622-5-bauerman@linux.ibm.com

s390/mm: force swiotlb for protected virtualization

2019-06-15T10:24:51Z

On s390, protected virtualization guests have to use bounced I/O buffers. That requires some plumbing. Let us make sure, any device that uses DMA API with direct ops correctly is spared from the problems, that a hypervisor attempting I/O to a non-shared page would bring. Signed-off-by: Halil Pasic Reviewed-by: Claudio Imbrenda Reviewed-by: Michael Mueller Tested-by: Michael Mueller Signed-off-by: Heiko Carstens