Messages in this thread Patch in this message | | | From | Alexander Duyck <> | Subject | [PATCH v2 6/8] x86/xen: Use __pa_symbol instead of __pa on C visible symbols | Date | Thu, 11 Oct 2012 13:50:23 -0700 |
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This change updates a few of the functions to use __pa_symbol when translating C visible symbols instead of __pa. By using __pa_symbol we are able to drop a few extra lines of code as don't have to test to see if the virtual pointer is a part of the kernel text or just standard virtual memory.
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> ---
arch/x86/xen/mmu.c | 19 ++++++++++--------- 1 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index fd28d86..c50a87e 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1449,7 +1449,8 @@ static int xen_pgd_alloc(struct mm_struct *mm) if (user_pgd != NULL) { user_pgd[pgd_index(VSYSCALL_START)] = - __pgd(__pa(level3_user_vsyscall) | _PAGE_TABLE); + __pgd(__pa_symbol(level3_user_vsyscall) | + _PAGE_TABLE); ret = 0; } @@ -1908,7 +1909,7 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn) * pgd. */ xen_mc_batch(); - __xen_write_cr3(true, __pa(init_level4_pgt)); + __xen_write_cr3(true, __pa_symbol(init_level4_pgt)); xen_mc_issue(PARAVIRT_LAZY_CPU); /* We can't that easily rip out L3 and L2, as the Xen pagetables are @@ -1931,10 +1932,10 @@ static RESERVE_BRK_ARRAY(pmd_t, swapper_kernel_pmd, PTRS_PER_PMD); static void __init xen_write_cr3_init(unsigned long cr3) { - unsigned long pfn = PFN_DOWN(__pa(swapper_pg_dir)); + unsigned long pfn = PFN_DOWN(__pa_symbol(swapper_pg_dir)); - BUG_ON(read_cr3() != __pa(initial_page_table)); - BUG_ON(cr3 != __pa(swapper_pg_dir)); + BUG_ON(read_cr3() != __pa_symbol(initial_page_table)); + BUG_ON(cr3 != __pa_symbol(swapper_pg_dir)); /* * We are switching to swapper_pg_dir for the first time (from @@ -1958,7 +1959,7 @@ static void __init xen_write_cr3_init(unsigned long cr3) pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE, pfn); pin_pagetable_pfn(MMUEXT_UNPIN_TABLE, - PFN_DOWN(__pa(initial_page_table))); + PFN_DOWN(__pa_symbol(initial_page_table))); set_page_prot(initial_page_table, PAGE_KERNEL); set_page_prot(initial_kernel_pmd, PAGE_KERNEL); @@ -1983,7 +1984,7 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn) copy_page(initial_page_table, pgd); initial_page_table[KERNEL_PGD_BOUNDARY] = - __pgd(__pa(initial_kernel_pmd) | _PAGE_PRESENT); + __pgd(__pa_symbol(initial_kernel_pmd) | _PAGE_PRESENT); set_page_prot(initial_kernel_pmd, PAGE_KERNEL_RO); set_page_prot(initial_page_table, PAGE_KERNEL_RO); @@ -1992,8 +1993,8 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn) pin_pagetable_pfn(MMUEXT_UNPIN_TABLE, PFN_DOWN(__pa(pgd))); pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE, - PFN_DOWN(__pa(initial_page_table))); - xen_write_cr3(__pa(initial_page_table)); + PFN_DOWN(__pa_symbol(initial_page_table))); + xen_write_cr3(__pa_symbol(initial_page_table)); memblock_reserve(__pa(xen_start_info->pt_base), xen_start_info->nr_pt_frames * PAGE_SIZE);
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