[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v3 7/7] arm/mpu: Create the skeleton for MPU compilation
This commit introduces the skeleton for the MPU memory management subsystem that allows the compilation on Arm64. Signed-off-by: Luca Fancellu <luca.fancellu@xxxxxxx> --- The implementation of setup_virt_paging() is under arm64/mpu because it will have a different implementation from arm32. v3 changes: - rebase changes v2 changes: - p2m_teardown{_allocation} stubs are now part of this patch - included missing headers - rename vmap-mpu.c to vmap.c - remove comment "Not used on MPU system" on implemented stubs --- --- xen/arch/arm/arm64/mpu/Makefile | 2 + xen/arch/arm/arm64/mpu/p2m.c | 19 +++++++ xen/arch/arm/arm64/mpu/smpboot.c | 26 +++++++++ xen/arch/arm/include/asm/mpu/p2m.h | 21 ++++++++ xen/arch/arm/include/asm/p2m.h | 2 +- xen/arch/arm/mpu/Makefile | 3 ++ xen/arch/arm/mpu/mm.c | 25 +++++++++ xen/arch/arm/mpu/p2m.c | 84 ++++++++++++++++++++++++++++++ xen/arch/arm/mpu/setup.c | 40 ++++++++++++++ xen/arch/arm/mpu/vmap.c | 26 +++++++++ 10 files changed, 247 insertions(+), 1 deletion(-) create mode 100644 xen/arch/arm/arm64/mpu/p2m.c create mode 100644 xen/arch/arm/arm64/mpu/smpboot.c create mode 100644 xen/arch/arm/include/asm/mpu/p2m.h create mode 100644 xen/arch/arm/mpu/p2m.c create mode 100644 xen/arch/arm/mpu/setup.c create mode 100644 xen/arch/arm/mpu/vmap.c diff --git a/xen/arch/arm/arm64/mpu/Makefile b/xen/arch/arm/arm64/mpu/Makefile index 3340058c08c6..cf0540aecc84 100644 --- a/xen/arch/arm/arm64/mpu/Makefile +++ b/xen/arch/arm/arm64/mpu/Makefile @@ -1 +1,3 @@ obj-y += head.o +obj-y += p2m.o +obj-y += smpboot.o diff --git a/xen/arch/arm/arm64/mpu/p2m.c b/xen/arch/arm/arm64/mpu/p2m.c new file mode 100644 index 000000000000..b6d8b2777b58 --- /dev/null +++ b/xen/arch/arm/arm64/mpu/p2m.c @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <xen/bug.h> +#include <xen/init.h> +#include <asm/p2m.h> + +void __init setup_virt_paging(void) +{ + BUG_ON("unimplemented"); +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/arm64/mpu/smpboot.c b/xen/arch/arm/arm64/mpu/smpboot.c new file mode 100644 index 000000000000..5090f443f577 --- /dev/null +++ b/xen/arch/arm/arm64/mpu/smpboot.c @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <xen/bug.h> +#include <xen/errno.h> +#include <xen/mm.h> +#include <xen/stdbool.h> + +int prepare_secondary_mm(int cpu) +{ + BUG_ON("unimplemented"); + return -EINVAL; +} + +void update_boot_mapping(bool enable) +{ + BUG_ON("unimplemented"); +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/include/asm/mpu/p2m.h b/xen/arch/arm/include/asm/mpu/p2m.h new file mode 100644 index 000000000000..e46d9e757a1d --- /dev/null +++ b/xen/arch/arm/include/asm/mpu/p2m.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __ARM_MPU_P2M_H__ +#define __ARM_MPU_P2M_H__ + +struct p2m_domain; + +static inline void p2m_clear_root_pages(struct p2m_domain *p2m) {} + +static inline void p2m_tlb_flush_sync(struct p2m_domain *p2m) {} + +#endif /* __ARM_MPU_P2M_H__ */ + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/include/asm/p2m.h b/xen/arch/arm/include/asm/p2m.h index 594dc4004138..2d53bf9b6177 100644 --- a/xen/arch/arm/include/asm/p2m.h +++ b/xen/arch/arm/include/asm/p2m.h @@ -168,7 +168,7 @@ typedef enum { #if defined(CONFIG_MMU) # include <asm/mmu/p2m.h> #else -# error "Unknown memory management layout" +# include <asm/mpu/p2m.h> #endif static inline bool arch_acquire_resource_check(struct domain *d) diff --git a/xen/arch/arm/mpu/Makefile b/xen/arch/arm/mpu/Makefile index b18cec483671..21bbc517b51a 100644 --- a/xen/arch/arm/mpu/Makefile +++ b/xen/arch/arm/mpu/Makefile @@ -1 +1,4 @@ obj-y += mm.o +obj-y += p2m.o +obj-y += setup.init.o +obj-y += vmap.o diff --git a/xen/arch/arm/mpu/mm.c b/xen/arch/arm/mpu/mm.c index 4e9a2405d8c5..07c8959f4ee9 100644 --- a/xen/arch/arm/mpu/mm.c +++ b/xen/arch/arm/mpu/mm.c @@ -1,9 +1,12 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include <xen/bug.h> +#include <xen/errno.h> #include <xen/init.h> #include <xen/lib.h> #include <xen/mm.h> #include <xen/sizes.h> +#include <xen/types.h> struct page_info *frame_table; @@ -17,6 +20,28 @@ static void __init __maybe_unused build_assertions(void) BUILD_BUG_ON(PAGE_SIZE != SZ_4K); } +void __init setup_mm(void) +{ + BUG_ON("unimplemented"); +} + +int modify_xen_mappings(unsigned long s, unsigned long e, unsigned int nf) +{ + BUG_ON("unimplemented"); + return -EINVAL; +} + +void dump_hyp_walk(vaddr_t addr) +{ + BUG_ON("unimplemented"); +} + +/* Release all __init and __initdata ranges to be reused */ +void free_init_memory(void) +{ + BUG_ON("unimplemented"); +} + void __iomem *ioremap_attr(paddr_t start, size_t len, unsigned int flags) { BUG_ON("unimplemented"); diff --git a/xen/arch/arm/mpu/p2m.c b/xen/arch/arm/mpu/p2m.c new file mode 100644 index 000000000000..f7fb58ab6aa8 --- /dev/null +++ b/xen/arch/arm/mpu/p2m.c @@ -0,0 +1,84 @@ + +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <xen/bug.h> +#include <xen/domain.h> +#include <xen/errno.h> +#include <xen/mm-frame.h> +#include <xen/sched.h> +#include <xen/types.h> +#include <asm/p2m.h> + +int p2m_set_entry(struct p2m_domain *p2m, gfn_t sgfn, unsigned long nr, + mfn_t smfn, p2m_type_t t, p2m_access_t a) +{ + BUG_ON("unimplemented"); + return -EINVAL; +} + +mfn_t p2m_get_entry(struct p2m_domain *p2m, gfn_t gfn, p2m_type_t *t, + p2m_access_t *a, unsigned int *page_order, bool *valid) +{ + BUG_ON("unimplemented"); + return INVALID_MFN; +} + +void p2m_dump_info(struct domain *d) +{ + BUG_ON("unimplemented"); +} + +int p2m_init(struct domain *d) +{ + BUG_ON("unimplemented"); + return -EINVAL; +} + +void p2m_save_state(struct vcpu *p) +{ + BUG_ON("unimplemented"); +} + +void p2m_restore_state(struct vcpu *n) +{ + BUG_ON("unimplemented"); +} + +void p2m_final_teardown(struct domain *d) +{ + BUG_ON("unimplemented"); +} + +bool p2m_resolve_translation_fault(struct domain *d, gfn_t gfn) +{ + BUG_ON("unimplemented"); + return false; +} + +void p2m_flush_vm(struct vcpu *v) {} + +int relinquish_p2m_mapping(struct domain *d) +{ + return 0; +} + +void p2m_domain_creation_finished(struct domain *d) {} + +int p2m_teardown(struct domain *d) +{ + return 0; +} + +int p2m_teardown_allocation(struct domain *d) +{ + return 0; +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/mpu/setup.c b/xen/arch/arm/mpu/setup.c new file mode 100644 index 000000000000..b4da77003f47 --- /dev/null +++ b/xen/arch/arm/mpu/setup.c @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <xen/bug.h> +#include <xen/init.h> +#include <xen/mm.h> +#include <xen/types.h> +#include <asm/setup.h> + +void __init setup_pagetables(void) {} + +void * __init early_fdt_map(paddr_t fdt_paddr) +{ + BUG_ON("unimplemented"); + return NULL; +} + +/* + * copy_from_paddr - copy data from a physical address + * @dst: destination virtual address + * @paddr: source physical address + * @len: length to copy + */ +void __init copy_from_paddr(void *dst, paddr_t paddr, unsigned long len) +{ + BUG_ON("unimplemented"); +} + +void __init remove_early_mappings(void) +{ + BUG_ON("unimplemented"); +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ diff --git a/xen/arch/arm/mpu/vmap.c b/xen/arch/arm/mpu/vmap.c new file mode 100644 index 000000000000..f977b79cd436 --- /dev/null +++ b/xen/arch/arm/mpu/vmap.c @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <xen/bug.h> +#include <xen/mm-frame.h> +#include <xen/types.h> +#include <xen/vmap.h> + +void *vmap_contig(mfn_t mfn, unsigned int nr) +{ + BUG_ON("unimplemented"); + return NULL; +} + +void vunmap(const void *va) +{ + BUG_ON("unimplemented"); +} + +/* + * Local variables: + * mode: C + * c-file-style: "BSD" + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + */ -- 2.34.1
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