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...source/ld64/ld64-274.2/src/ld/Resolver.cpp.auto.html <https://opensource.apple.com/source/ld64/ld64-274.2/src/ld/Resolver.cpp.auto.html> There are 4 special symbol prefixes for the mach-o linker synthesised symbols: - segment$start$__SEGMENT - segment$end$__SEGMENT - section$start$__SEGMENT$__section - section$end$__SEGMENT$__section In asm: /* get imagebase and slide for static PIE and ASLR support in x86_64-xnu-musl */ .align 3 __image_base: .quad segment$start$__TEXT __start_static: .quad start .text .align 3 .global start start: xor %rbp,%rbp mov %rsp,%rdi andq $-16,...

...Resolver.cpp.auto.html <https://opensource.apple.com/source/ld64/ld64-274.2/src/ld/Resolver.cpp.auto.html> > > There are 4 special symbol prefixes for the mach-o linker synthesised symbols: > > - segment$start$__SEGMENT > - segment$end$__SEGMENT > - section$start$__SEGMENT$__section > - section$end$__SEGMENT$__section > > In asm: > > /* get imagebase and slide for static PIE and ASLR support in x86_64-xnu-musl */ > > .align 3 > __image_base: > .quad segment$start$__TEXT > __start_static: > .quad start > .text > .align 3 > .global st...

...0117da 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio_config.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,32 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +/* > + * arch_validate_virtio_features > + * @dev: the VIRTIO device being added > + * > + * Return an error if required featur...

...0117da 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio_config.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,32 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +/* > + * arch_validate_virtio_features > + * @dev: the VIRTIO device being added > + * > + * Return an error if required featur...

...rch/s390/mm/init.c > > > @@ -45,6 +45,7 @@ > > > #include <asm/kasan.h> > > > #include <asm/dma-mapping.h> > > > #include <asm/uv.h> > > > +#include <linux/virtio_config.h> > > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > > @@ -161,6 +162,33 @@ bool force_dma_unencrypted(struct device *dev) > > > return is_prot_virt_guest(); > > > } > > > +/* > > > + * arch_validate_virtio_features > > > + * @dev: the VIRTIO device being added >...

...rch/s390/mm/init.c > > > @@ -45,6 +45,7 @@ > > > #include <asm/kasan.h> > > > #include <asm/dma-mapping.h> > > > #include <asm/uv.h> > > > +#include <linux/virtio_config.h> > > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > > @@ -161,6 +162,33 @@ bool force_dma_unencrypted(struct device *dev) > > > return is_prot_virt_guest(); > > > } > > > +/* > > > + * arch_validate_virtio_features > > > + * @dev: the VIRTIO device being added >...

An architecture protecting the guest memory against unauthorized host access may want to enforce VIRTIO I/O device protection through the use of VIRTIO_F_IOMMU_PLATFORM. Let's give a chance to the architecture to accept or not devices without VIRTIO_F_IOMMU_PLATFORM. Pierre Morel (1): s390: virtio: let arch accept devices without IOMMU feature arch/s390/mm/init.c | 6 ++++++

...++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio_config.h> I don't think you need this include anymore. > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > (...) With the nit fixed, Reviewed-by: Cornelia Huck <cohuck at redhat.com>

...554d4f 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio_config.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,33 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +/* > + * arch_validate_virtio_features > + * @dev: the VIRTIO device being added > + * > + * Return an error if required featur...

...554d4f 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio_config.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,33 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +/* > + * arch_validate_virtio_features > + * @dev: the VIRTIO device being added > + * > + * Return an error if required featur...

An architecture protecting the guest memory against unauthorized host access may want to enforce VIRTIO I/O device protection through the use of VIRTIO_F_IOMMU_PLATFORM. Let's give a chance to the architecture to accept or not devices without VIRTIO_F_IOMMU_PLATFORM. Pierre Morel (1): s390: virtio: let arch accept devices without IOMMU feature arch/s390/mm/init.c | 6 ++++++

...tern u64 sev_status; extern bool sev_enabled; void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr, @@ -49,6 +50,7 @@ void __init mem_encrypt_free_decrypted_mem(void); bool sme_active(void); bool sev_active(void); +bool sev_es_active(void); #define __bss_decrypted __attribute__((__section__(".bss..decrypted"))) @@ -71,6 +73,7 @@ static inline void __init sme_enable(struct boot_params *bp) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } +static inline bool sev_es_active(void) { return false; } static i...

...e_me_mask; +extern u64 sev_status; extern bool sev_enabled; void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr, @@ -50,6 +51,7 @@ void __init mem_encrypt_init(void); bool sme_active(void); bool sev_active(void); +bool sev_es_active(void); #define __bss_decrypted __attribute__((__section__(".bss..decrypted"))) @@ -72,6 +74,7 @@ static inline void __init sme_enable(struct boot_params *bp) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } +static inline bool sev_es_active(void) { return false; } static i...

...e_me_mask; +extern u64 sev_status; extern bool sev_enabled; void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr, @@ -50,6 +51,7 @@ void __init mem_encrypt_init(void); bool sme_active(void); bool sev_active(void); +bool sev_es_active(void); #define __bss_decrypted __attribute__((__section__(".bss..decrypted"))) @@ -72,6 +74,7 @@ static inline void __init sme_enable(struct boot_params *bp) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } +static inline bool sev_es_active(void) { return false; } static i...

...e_me_mask; +extern u64 sev_status; extern bool sev_enabled; void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr, @@ -50,6 +51,7 @@ void __init mem_encrypt_init(void); bool sme_active(void); bool sev_active(void); +bool sev_es_active(void); #define __bss_decrypted __attribute__((__section__(".bss..decrypted"))) @@ -72,6 +74,7 @@ static inline void __init sme_enable(struct boot_params *bp) { } static inline bool sme_active(void) { return false; } static inline bool sev_active(void) { return false; } +static inline bool sev_es_active(void) { return false; } static i...

.....215070c03226 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,11 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +int arch_needs_virtio_iommu_platform(struct virtio_device *dev) > +{ > + return is_prot_virt_guest(); > +} > + > /* protected...

.....215070c03226 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,11 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +int arch_needs_virtio_iommu_platform(struct virtio_device *dev) > +{ > + return is_prot_virt_guest(); > +} > + > /* protected...

...ensource.apple.com/source/ld64/ld64-274.2/src/ >> ld/Resolver.cpp.auto.html >> >> There are 4 special symbol prefixes for the mach-o linker synthesised >> symbols: >> >> - segment$start$__SEGMENT >> - segment$end$__SEGMENT >> - section$start$__SEGMENT$__section >> - section$end$__SEGMENT$__section >> >> In asm: >> >> /* get imagebase and slide for static PIE and ASLR support in >> x86_64-xnu-musl */ >> >> .align 3 >> __image_base: >> .quad segment$start$__TEXT >> __start_static: >> .q...

....215070c03226 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,11 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +int arch_needs_virtio_iommu_platform(struct virtio_device *dev) > +{ > + return is_prot_virt_guest(); > +} > + > /* protect...

....215070c03226 100644 > --- a/arch/s390/mm/init.c > +++ b/arch/s390/mm/init.c > @@ -45,6 +45,7 @@ > #include <asm/kasan.h> > #include <asm/dma-mapping.h> > #include <asm/uv.h> > +#include <linux/virtio.h> > > pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); > > @@ -161,6 +162,11 @@ bool force_dma_unencrypted(struct device *dev) > return is_prot_virt_guest(); > } > > +int arch_needs_virtio_iommu_platform(struct virtio_device *dev) > +{ > + return is_prot_virt_guest(); > +} > + > /* protect...