[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 08/14] xen: Convert is_xen_heap_mfn to use typesafe MFN
No functional changes. Signed-off-by: Julien Grall <julien.grall@xxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> --- Changes in v2: - Fix coding style - Merge the declaration for gpfn and old_gpfn - Don't open-code mfn_valid - Add Jan's reviewed-by - Use mfn_add(mfn, -1) - Add Stefano's acked-by for ARM parts --- xen/arch/x86/mm.c | 10 +++++----- xen/arch/x86/mm/p2m.c | 2 +- xen/arch/x86/mm/shadow/multi.c | 2 +- xen/common/page_alloc.c | 4 ++-- xen/include/asm-arm/mm.h | 8 ++++---- xen/include/asm-x86/mm.h | 2 +- 6 files changed, 14 insertions(+), 14 deletions(-) diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c index 9878453eb0..570e1e0deb 100644 --- a/xen/arch/x86/mm.c +++ b/xen/arch/x86/mm.c @@ -4462,8 +4462,8 @@ int xenmem_add_to_physmap_one( gfn_t gpfn) { struct page_info *page = NULL; - unsigned long gfn = 0; /* gcc ... */ - unsigned long prev_mfn, old_gpfn; + unsigned long gfn = 0 /* gcc ... */, old_gpfn; + mfn_t prev_mfn; int rc = 0; mfn_t mfn = INVALID_MFN; p2m_type_t p2mt; @@ -4512,12 +4512,12 @@ int xenmem_add_to_physmap_one( } /* Remove previously mapped page if it was present. */ - prev_mfn = mfn_x(get_gfn(d, gfn_x(gpfn), &p2mt)); - if ( mfn_valid(_mfn(prev_mfn)) ) + prev_mfn = get_gfn(d, gfn_x(gpfn), &p2mt); + if ( mfn_valid(prev_mfn) ) { if ( is_xen_heap_mfn(prev_mfn) ) /* Xen heap frames are simply unhooked from this phys slot. */ - rc = guest_physmap_remove_page(d, gpfn, _mfn(prev_mfn), PAGE_ORDER_4K); + rc = guest_physmap_remove_page(d, gpfn, prev_mfn, PAGE_ORDER_4K); else /* Normal domain memory is freed, to avoid leaking memory. */ rc = guest_remove_page(d, gfn_x(gpfn)); diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c index b16117dc56..3c98f72dbb 100644 --- a/xen/arch/x86/mm/p2m.c +++ b/xen/arch/x86/mm/p2m.c @@ -2935,7 +2935,7 @@ int p2m_add_foreign(struct domain *tdom, unsigned long fgfn, prev_mfn = get_gfn(tdom, gpfn, &p2mt_prev); if ( mfn_valid(prev_mfn) ) { - if ( is_xen_heap_mfn(mfn_x(prev_mfn)) ) + if ( is_xen_heap_mfn(prev_mfn) ) /* Xen heap frames are simply unhooked from this phys slot */ rc = guest_physmap_remove_page(tdom, _gfn(gpfn), prev_mfn, 0); else diff --git a/xen/arch/x86/mm/shadow/multi.c b/xen/arch/x86/mm/shadow/multi.c index 8781bdcfe5..35a7b606d0 100644 --- a/xen/arch/x86/mm/shadow/multi.c +++ b/xen/arch/x86/mm/shadow/multi.c @@ -559,7 +559,7 @@ _sh_propagate(struct vcpu *v, * caching attributes in the shadows to match what was asked for. */ if ( (level == 1) && is_hvm_domain(d) && - !is_xen_heap_mfn(mfn_x(target_mfn)) ) + !is_xen_heap_mfn(target_mfn) ) { int type; diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c index b4067ae202..6061cce24f 100644 --- a/xen/common/page_alloc.c +++ b/xen/common/page_alloc.c @@ -2121,9 +2121,9 @@ void init_xenheap_pages(paddr_t ps, paddr_t pe) * Yuk! Ensure there is a one-page buffer between Xen and Dom zones, to * prevent merging of power-of-two blocks across the zone boundary. */ - if ( ps && !is_xen_heap_mfn(paddr_to_pfn(ps)-1) ) + if ( ps && !is_xen_heap_mfn(mfn_add(maddr_to_mfn(ps), -1)) ) ps += PAGE_SIZE; - if ( !is_xen_heap_mfn(paddr_to_pfn(pe)) ) + if ( !is_xen_heap_mfn(maddr_to_mfn(pe)) ) pe -= PAGE_SIZE; memguard_guard_range(maddr_to_virt(ps), pe - ps); diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h index b56018aace..a9c8352b94 100644 --- a/xen/include/asm-arm/mm.h +++ b/xen/include/asm-arm/mm.h @@ -138,16 +138,16 @@ extern vaddr_t xenheap_virt_start; #endif #ifdef CONFIG_ARM_32 -#define is_xen_heap_page(page) is_xen_heap_mfn(mfn_x(page_to_mfn(page))) +#define is_xen_heap_page(page) is_xen_heap_mfn(page_to_mfn(page)) #define is_xen_heap_mfn(mfn) ({ \ - unsigned long mfn_ = (mfn); \ + unsigned long mfn_ = mfn_x(mfn); \ (mfn_ >= mfn_x(xenheap_mfn_start) && \ mfn_ < mfn_x(xenheap_mfn_end)); \ }) #else #define is_xen_heap_page(page) ((page)->count_info & PGC_xen_heap) #define is_xen_heap_mfn(mfn) \ - (mfn_valid(_mfn(mfn)) && is_xen_heap_page(mfn_to_page(_mfn(mfn)))) + (mfn_valid(mfn) && is_xen_heap_page(mfn_to_page(mfn))) #endif #define is_xen_fixed_mfn(mfn) \ @@ -246,7 +246,7 @@ static inline paddr_t __virt_to_maddr(vaddr_t va) #ifdef CONFIG_ARM_32 static inline void *maddr_to_virt(paddr_t ma) { - ASSERT(is_xen_heap_mfn(ma >> PAGE_SHIFT)); + ASSERT(is_xen_heap_mfn(maddr_to_mfn(ma))); ma -= mfn_to_maddr(xenheap_mfn_start); return (void *)(unsigned long) ma + XENHEAP_VIRT_START; } diff --git a/xen/include/asm-x86/mm.h b/xen/include/asm-x86/mm.h index f124f57964..6f76f004ab 100644 --- a/xen/include/asm-x86/mm.h +++ b/xen/include/asm-x86/mm.h @@ -278,7 +278,7 @@ struct page_info #define is_xen_heap_page(page) ((page)->count_info & PGC_xen_heap) #define is_xen_heap_mfn(mfn) \ - (__mfn_valid(mfn) && is_xen_heap_page(mfn_to_page(_mfn(mfn)))) + (mfn_valid(mfn) && is_xen_heap_page(mfn_to_page(mfn))) #define is_xen_fixed_mfn(mfn) \ (((mfn_to_maddr(mfn)) >= __pa(&_stext)) && \ ((mfn_to_maddr(mfn)) <= __pa(&__2M_rwdata_end))) -- 2.11.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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