From 73090f8993a40a2f67fed1ab866a928c68cd3765 Mon Sep 17 00:00:00 2001 From: Attilio Rao Date: Tue, 21 Aug 2012 21:22:37 +0100 Subject: x86: Remove base argument from x86_init.paging.pagetable_setup_start We either use swapper_pg_dir or the argument is unused. Preparatory patch to simplify platform pagetable setup further. Signed-off-by: Attilio Rao Ackedb-by: Cc: Cc: Cc: Link: http://lkml.kernel.org/r/1345580561-8506-2-git-send-email-attilio.rao@citrix.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/pgtable_types.h | 6 +++--- arch/x86/include/asm/x86_init.h | 2 +- arch/x86/kernel/setup.c | 2 +- arch/x86/kernel/x86_init.c | 3 ++- arch/x86/mm/init_32.c | 4 ++-- arch/x86/xen/mmu.c | 2 +- 6 files changed, 10 insertions(+), 9 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index 013286a10c2..e02b875e692 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -303,11 +303,11 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pte); extern void native_pagetable_reserve(u64 start, u64 end); #ifdef CONFIG_X86_32 -extern void native_pagetable_setup_start(pgd_t *base); +extern void native_pagetable_setup_start(void); extern void native_pagetable_setup_done(pgd_t *base); #else -#define native_pagetable_setup_start x86_init_pgd_noop -#define native_pagetable_setup_done x86_init_pgd_noop +#define native_pagetable_setup_start x86_init_pgd_start_noop +#define native_pagetable_setup_done x86_init_pgd_done_noop #endif struct seq_file; diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 38155f66714..782ba0c4b26 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -85,7 +85,7 @@ struct x86_init_mapping { * @pagetable_setup_done: platform specific post paging_init() call */ struct x86_init_paging { - void (*pagetable_setup_start)(pgd_t *base); + void (*pagetable_setup_start)(void); void (*pagetable_setup_done)(pgd_t *base); }; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index f4b9b80e1b9..90cbbe00adc 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -961,7 +961,7 @@ void __init setup_arch(char **cmdline_p) kvmclock_init(); #endif - x86_init.paging.pagetable_setup_start(swapper_pg_dir); + x86_init.paging.pagetable_setup_start(); paging_init(); x86_init.paging.pagetable_setup_done(swapper_pg_dir); diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 9f3167e891e..3b88493ec7c 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -26,7 +26,8 @@ void __cpuinit x86_init_noop(void) { } void __init x86_init_uint_noop(unsigned int unused) { } -void __init x86_init_pgd_noop(pgd_t *unused) { } +void __init x86_init_pgd_start_noop(void) { } +void __init x86_init_pgd_done_noop(pgd_t *unused) { } int __init iommu_init_noop(void) { return 0; } void iommu_shutdown_noop(void) { } diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 575d86f85ce..c4aa1b25ba3 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -445,10 +445,10 @@ static inline void permanent_kmaps_init(pgd_t *pgd_base) } #endif /* CONFIG_HIGHMEM */ -void __init native_pagetable_setup_start(pgd_t *base) +void __init native_pagetable_setup_start(void) { unsigned long pfn, va; - pgd_t *pgd; + pgd_t *pgd, *base = swapper_pg_dir; pud_t *pud; pmd_t *pmd; pte_t *pte; diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 5141d808e75..32e66c8d014 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1174,7 +1174,7 @@ static void xen_exit_mmap(struct mm_struct *mm) spin_unlock(&mm->page_table_lock); } -static void __init xen_pagetable_setup_start(pgd_t *base) +static void __init xen_pagetable_setup_start(void) { } -- cgit v1.2.3 From 7737b215ad0f94d20a87d98315da9f6cadaf35c9 Mon Sep 17 00:00:00 2001 From: Attilio Rao Date: Tue, 21 Aug 2012 21:22:38 +0100 Subject: x86: Rename pagetable_setup_start() to pagetable_init() In preparation for unifying the pagetable_setup_start() and pagetable_setup_done() setup functions, rename appropriately all the infrastructure related to pagetable_setup_start(). Signed-off-by: Attilio Rao Ackedd-by: Cc: Cc: Cc: Link: http://lkml.kernel.org/r/1345580561-8506-3-git-send-email-attilio.rao@citrix.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/pgtable_types.h | 4 ++-- arch/x86/include/asm/x86_init.h | 4 ++-- arch/x86/kernel/setup.c | 2 +- arch/x86/kernel/x86_init.c | 4 ++-- arch/x86/mm/init_32.c | 4 ++-- arch/x86/xen/mmu.c | 4 ++-- 6 files changed, 11 insertions(+), 11 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index e02b875e692..0c01e0730f7 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -303,10 +303,10 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pte); extern void native_pagetable_reserve(u64 start, u64 end); #ifdef CONFIG_X86_32 -extern void native_pagetable_setup_start(void); +extern void native_pagetable_init(void); extern void native_pagetable_setup_done(pgd_t *base); #else -#define native_pagetable_setup_start x86_init_pgd_start_noop +#define native_pagetable_init x86_init_pgd_init_noop #define native_pagetable_setup_done x86_init_pgd_done_noop #endif diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 782ba0c4b26..24084b2b3a4 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -81,11 +81,11 @@ struct x86_init_mapping { /** * struct x86_init_paging - platform specific paging functions - * @pagetable_setup_start: platform specific pre paging_init() call + * @pagetable_init: platform specific paging initialization call * @pagetable_setup_done: platform specific post paging_init() call */ struct x86_init_paging { - void (*pagetable_setup_start)(void); + void (*pagetable_init)(void); void (*pagetable_setup_done)(pgd_t *base); }; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 90cbbe00adc..61b7d9827af 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -961,7 +961,7 @@ void __init setup_arch(char **cmdline_p) kvmclock_init(); #endif - x86_init.paging.pagetable_setup_start(); + x86_init.paging.pagetable_init(); paging_init(); x86_init.paging.pagetable_setup_done(swapper_pg_dir); diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 3b88493ec7c..0e1e950113b 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -26,7 +26,7 @@ void __cpuinit x86_init_noop(void) { } void __init x86_init_uint_noop(unsigned int unused) { } -void __init x86_init_pgd_start_noop(void) { } +void __init x86_init_pgd_init_noop(void) { } void __init x86_init_pgd_done_noop(pgd_t *unused) { } int __init iommu_init_noop(void) { return 0; } void iommu_shutdown_noop(void) { } @@ -69,7 +69,7 @@ struct x86_init_ops x86_init __initdata = { }, .paging = { - .pagetable_setup_start = native_pagetable_setup_start, + .pagetable_init = native_pagetable_init, .pagetable_setup_done = native_pagetable_setup_done, }, diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index c4aa1b25ba3..0e38e0e8804 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -445,7 +445,7 @@ static inline void permanent_kmaps_init(pgd_t *pgd_base) } #endif /* CONFIG_HIGHMEM */ -void __init native_pagetable_setup_start(void) +void __init native_pagetable_init(void) { unsigned long pfn, va; pgd_t *pgd, *base = swapper_pg_dir; @@ -493,7 +493,7 @@ void __init native_pagetable_setup_done(pgd_t *base) * If we're booting paravirtualized under a hypervisor, then there are * more options: we may already be running PAE, and the pagetable may * or may not be based in swapper_pg_dir. In any case, - * paravirt_pagetable_setup_start() will set up swapper_pg_dir + * paravirt_pagetable_init() will set up swapper_pg_dir * appropriately for the rest of the initialization to work. * * In general, pagetable_init() assumes that the pagetable may already diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 32e66c8d014..624efbefb94 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1174,7 +1174,7 @@ static void xen_exit_mmap(struct mm_struct *mm) spin_unlock(&mm->page_table_lock); } -static void __init xen_pagetable_setup_start(void) +static void __init xen_pagetable_init(void) { } @@ -2068,7 +2068,7 @@ static const struct pv_mmu_ops xen_mmu_ops __initconst = { void __init xen_init_mmu_ops(void) { x86_init.mapping.pagetable_reserve = xen_mapping_pagetable_reserve; - x86_init.paging.pagetable_setup_start = xen_pagetable_setup_start; + x86_init.paging.pagetable_init = xen_pagetable_init; x86_init.paging.pagetable_setup_done = xen_pagetable_setup_done; pv_mmu_ops = xen_mmu_ops; -- cgit v1.2.3 From 843b8ed2ec598aae5e3516b21957ede62a070e36 Mon Sep 17 00:00:00 2001 From: Attilio Rao Date: Tue, 21 Aug 2012 21:22:39 +0100 Subject: x86: Move paging_init() call to x86_init.paging.pagetable_init() Move the paging_init() call to the platform specific pagetable_init() function, so we can get rid of the extra pagetable_setup_done() function pointer. Signed-off-by: Attilio Rao Acked-by: Cc: Cc: Cc: Link: http://lkml.kernel.org/r/1345580561-8506-4-git-send-email-attilio.rao@citrix.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/pgtable_types.h | 2 +- arch/x86/kernel/setup.c | 1 - arch/x86/kernel/x86_init.c | 1 - arch/x86/mm/init_32.c | 1 + arch/x86/xen/mmu.c | 1 + 5 files changed, 3 insertions(+), 3 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index 0c01e0730f7..c93cb8eec7c 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -306,7 +306,7 @@ extern void native_pagetable_reserve(u64 start, u64 end); extern void native_pagetable_init(void); extern void native_pagetable_setup_done(pgd_t *base); #else -#define native_pagetable_init x86_init_pgd_init_noop +#define native_pagetable_init paging_init #define native_pagetable_setup_done x86_init_pgd_done_noop #endif diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 61b7d9827af..315fd24131e 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -962,7 +962,6 @@ void __init setup_arch(char **cmdline_p) #endif x86_init.paging.pagetable_init(); - paging_init(); x86_init.paging.pagetable_setup_done(swapper_pg_dir); if (boot_cpu_data.cpuid_level >= 0) { diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 0e1e950113b..5f2478fb3d6 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -26,7 +26,6 @@ void __cpuinit x86_init_noop(void) { } void __init x86_init_uint_noop(unsigned int unused) { } -void __init x86_init_pgd_init_noop(void) { } void __init x86_init_pgd_done_noop(pgd_t *unused) { } int __init iommu_init_noop(void) { return 0; } void iommu_shutdown_noop(void) { } diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 0e38e0e8804..e35b4b17189 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -475,6 +475,7 @@ void __init native_pagetable_init(void) pte_clear(NULL, va, pte); } paravirt_alloc_pmd(&init_mm, __pa(base) >> PAGE_SHIFT); + paging_init(); } void __init native_pagetable_setup_done(pgd_t *base) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 624efbefb94..c2ff7ea37b8 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1176,6 +1176,7 @@ static void xen_exit_mmap(struct mm_struct *mm) static void __init xen_pagetable_init(void) { + paging_init(); } static __init void xen_mapping_pagetable_reserve(u64 start, u64 end) -- cgit v1.2.3 From c711288727a62f74d48032e56e51333dd104bf58 Mon Sep 17 00:00:00 2001 From: Attilio Rao Date: Tue, 21 Aug 2012 21:22:40 +0100 Subject: x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done() At this stage x86_init.paging.pagetable_setup_done is only used in the XEN case. Move its content in the x86_init.paging.pagetable_init setup function and remove the now unused x86_init.paging.pagetable_setup_done remaining infrastructure. Signed-off-by: Attilio Rao Acked-by: Cc: Cc: Cc: Link: http://lkml.kernel.org/r/1345580561-8506-5-git-send-email-attilio.rao@citrix.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/pgtable_types.h | 2 -- arch/x86/include/asm/x86_init.h | 2 -- arch/x86/kernel/setup.c | 1 - arch/x86/kernel/x86_init.c | 2 -- arch/x86/mm/init_32.c | 4 ---- arch/x86/xen/mmu.c | 13 ++++--------- 6 files changed, 4 insertions(+), 20 deletions(-) (limited to 'arch') diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index c93cb8eec7c..db8fec6d295 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -304,10 +304,8 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pte); extern void native_pagetable_reserve(u64 start, u64 end); #ifdef CONFIG_X86_32 extern void native_pagetable_init(void); -extern void native_pagetable_setup_done(pgd_t *base); #else #define native_pagetable_init paging_init -#define native_pagetable_setup_done x86_init_pgd_done_noop #endif struct seq_file; diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 24084b2b3a4..995ea5c3fbf 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -82,11 +82,9 @@ struct x86_init_mapping { /** * struct x86_init_paging - platform specific paging functions * @pagetable_init: platform specific paging initialization call - * @pagetable_setup_done: platform specific post paging_init() call */ struct x86_init_paging { void (*pagetable_init)(void); - void (*pagetable_setup_done)(pgd_t *base); }; /** diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 315fd24131e..4f165479c45 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -962,7 +962,6 @@ void __init setup_arch(char **cmdline_p) #endif x86_init.paging.pagetable_init(); - x86_init.paging.pagetable_setup_done(swapper_pg_dir); if (boot_cpu_data.cpuid_level >= 0) { /* A CPU has %cr4 if and only if it has CPUID */ diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index 5f2478fb3d6..7a3d075a814 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -26,7 +26,6 @@ void __cpuinit x86_init_noop(void) { } void __init x86_init_uint_noop(unsigned int unused) { } -void __init x86_init_pgd_done_noop(pgd_t *unused) { } int __init iommu_init_noop(void) { return 0; } void iommu_shutdown_noop(void) { } @@ -69,7 +68,6 @@ struct x86_init_ops x86_init __initdata = { .paging = { .pagetable_init = native_pagetable_init, - .pagetable_setup_done = native_pagetable_setup_done, }, .timers = { diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index e35b4b17189..4f04db15002 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -478,10 +478,6 @@ void __init native_pagetable_init(void) paging_init(); } -void __init native_pagetable_setup_done(pgd_t *base) -{ -} - /* * Build a proper pagetable for the kernel mappings. Up until this * point, we've been running on some set of pagetables constructed by diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index c2ff7ea37b8..7a769b7526c 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1174,9 +1174,13 @@ static void xen_exit_mmap(struct mm_struct *mm) spin_unlock(&mm->page_table_lock); } +static void xen_post_allocator_init(void); + static void __init xen_pagetable_init(void) { paging_init(); + xen_setup_shared_info(); + xen_post_allocator_init(); } static __init void xen_mapping_pagetable_reserve(u64 start, u64 end) @@ -1193,14 +1197,6 @@ static __init void xen_mapping_pagetable_reserve(u64 start, u64 end) } } -static void xen_post_allocator_init(void); - -static void __init xen_pagetable_setup_done(pgd_t *base) -{ - xen_setup_shared_info(); - xen_post_allocator_init(); -} - static void xen_write_cr2(unsigned long cr2) { this_cpu_read(xen_vcpu)->arch.cr2 = cr2; @@ -2070,7 +2066,6 @@ void __init xen_init_mmu_ops(void) { x86_init.mapping.pagetable_reserve = xen_mapping_pagetable_reserve; x86_init.paging.pagetable_init = xen_pagetable_init; - x86_init.paging.pagetable_setup_done = xen_pagetable_setup_done; pv_mmu_ops = xen_mmu_ops; memset(dummy_mapping, 0xff, PAGE_SIZE); -- cgit v1.2.3 From 64282278989d5b0398dcb3ba7904cb00c621dc35 Mon Sep 17 00:00:00 2001 From: Attilio Rao Date: Tue, 21 Aug 2012 21:22:41 +0100 Subject: x86: Document x86_init.paging.pagetable_init() Signed-off-by: Attilio Rao Acked-by: Cc: Cc: Cc: Link: http://lkml.kernel.org/r/1345580561-8506-6-git-send-email-attilio.rao@citrix.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/x86_init.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index 995ea5c3fbf..57693498519 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -81,7 +81,10 @@ struct x86_init_mapping { /** * struct x86_init_paging - platform specific paging functions - * @pagetable_init: platform specific paging initialization call + * @pagetable_init: platform specific paging initialization call to setup + * the kernel pagetables and prepare accessors functions. + * Callback must call paging_init(). Called once after the + * direct mapping for phys memory is available. */ struct x86_init_paging { void (*pagetable_init)(void); -- cgit v1.2.3