arm64: Use __pa_symbol for kernel symbols
__pa_symbol is technically the marcro that should be used for kernel symbols. Switch to this as a pre-requisite for DEBUG_VIRTUAL which will do bounds checking. Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Laura Abbott
Will Deacon
Родитель
869dcfd10d
Коммит
2077be6783
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@ -47,7 +47,7 @@
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* If the page is in the bottom half, we have to use the top half. If
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* the page is in the top half, we have to use the bottom half:
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*
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* T = __virt_to_phys(__hyp_idmap_text_start)
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* T = __pa_symbol(__hyp_idmap_text_start)
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* if (T & BIT(VA_BITS - 1))
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* HYP_VA_MIN = 0 //idmap in upper half
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* else
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@ -271,7 +271,7 @@ static inline void __kvm_flush_dcache_pud(pud_t pud)
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kvm_flush_dcache_to_poc(page_address(page), PUD_SIZE);
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}
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#define kvm_virt_to_phys(x) __virt_to_phys((unsigned long)(x))
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#define kvm_virt_to_phys(x) __pa_symbol(x)
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void kvm_set_way_flush(struct kvm_vcpu *vcpu);
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void kvm_toggle_cache(struct kvm_vcpu *vcpu, bool was_enabled);
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@ -210,6 +210,7 @@ static inline void *phys_to_virt(phys_addr_t x)
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#define __va(x) ((void *)__phys_to_virt((phys_addr_t)(x)))
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#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
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#define virt_to_pfn(x) __phys_to_pfn(__virt_to_phys((unsigned long)(x)))
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#define sym_to_pfn(x) __phys_to_pfn(__pa_symbol(x))
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/*
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* virt_to_page(k) convert a _valid_ virtual address to struct page *
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@ -45,7 +45,7 @@ static inline void contextidr_thread_switch(struct task_struct *next)
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*/
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static inline void cpu_set_reserved_ttbr0(void)
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{
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unsigned long ttbr = virt_to_phys(empty_zero_page);
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unsigned long ttbr = __pa_symbol(empty_zero_page);
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write_sysreg(ttbr, ttbr0_el1);
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isb();
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@ -114,7 +114,7 @@ static inline void cpu_install_idmap(void)
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local_flush_tlb_all();
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cpu_set_idmap_tcr_t0sz();
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cpu_switch_mm(idmap_pg_dir, &init_mm);
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cpu_switch_mm(lm_alias(idmap_pg_dir), &init_mm);
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}
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/*
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@ -129,7 +129,7 @@ static inline void cpu_replace_ttbr1(pgd_t *pgd)
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phys_addr_t pgd_phys = virt_to_phys(pgd);
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replace_phys = (void *)virt_to_phys(idmap_cpu_replace_ttbr1);
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replace_phys = (void *)__pa_symbol(idmap_cpu_replace_ttbr1);
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cpu_install_idmap();
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replace_phys(pgd_phys);
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@ -52,7 +52,7 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
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* for zero-mapped memory areas etc..
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*/
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extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
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#define ZERO_PAGE(vaddr) pfn_to_page(PHYS_PFN(__pa(empty_zero_page)))
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#define ZERO_PAGE(vaddr) phys_to_page(__pa_symbol(empty_zero_page))
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#define pte_ERROR(pte) __pte_error(__FILE__, __LINE__, pte_val(pte))
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@ -17,6 +17,7 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/acpi.h>
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#include <linux/mm.h>
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#include <linux/types.h>
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#include <asm/cpu_ops.h>
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@ -109,7 +110,7 @@ static int acpi_parking_protocol_cpu_boot(unsigned int cpu)
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* that read this address need to convert this address to the
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* Boot-Loader's endianness before jumping.
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*/
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writeq_relaxed(__pa(secondary_entry), &mailbox->entry_point);
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writeq_relaxed(__pa_symbol(secondary_entry), &mailbox->entry_point);
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writel_relaxed(cpu_entry->gic_cpu_id, &mailbox->cpu_id);
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arch_send_wakeup_ipi_mask(cpumask_of(cpu));
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@ -24,7 +24,7 @@ static inline void __noreturn cpu_soft_restart(unsigned long el2_switch,
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el2_switch = el2_switch && !is_kernel_in_hyp_mode() &&
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is_hyp_mode_available();
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restart = (void *)virt_to_phys(__cpu_soft_restart);
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restart = (void *)__pa_symbol(__cpu_soft_restart);
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cpu_install_idmap();
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restart(el2_switch, entry, arg0, arg1, arg2);
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@ -23,6 +23,7 @@
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#include <linux/sort.h>
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#include <linux/stop_machine.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <asm/cpu.h>
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#include <asm/cpufeature.h>
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#include <asm/cpu_ops.h>
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@ -746,7 +747,7 @@ static bool runs_at_el2(const struct arm64_cpu_capabilities *entry, int __unused
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static bool hyp_offset_low(const struct arm64_cpu_capabilities *entry,
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int __unused)
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{
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phys_addr_t idmap_addr = virt_to_phys(__hyp_idmap_text_start);
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phys_addr_t idmap_addr = __pa_symbol(__hyp_idmap_text_start);
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/*
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* Activate the lower HYP offset only if:
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@ -50,9 +50,6 @@
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*/
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extern int in_suspend;
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/* Find a symbols alias in the linear map */
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#define LMADDR(x) phys_to_virt(virt_to_phys(x))
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/* Do we need to reset el2? */
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#define el2_reset_needed() (is_hyp_mode_available() && !is_kernel_in_hyp_mode())
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@ -102,8 +99,8 @@ static inline void arch_hdr_invariants(struct arch_hibernate_hdr_invariants *i)
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int pfn_is_nosave(unsigned long pfn)
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{
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unsigned long nosave_begin_pfn = virt_to_pfn(&__nosave_begin);
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unsigned long nosave_end_pfn = virt_to_pfn(&__nosave_end - 1);
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unsigned long nosave_begin_pfn = sym_to_pfn(&__nosave_begin);
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unsigned long nosave_end_pfn = sym_to_pfn(&__nosave_end - 1);
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return (pfn >= nosave_begin_pfn) && (pfn <= nosave_end_pfn);
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}
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@ -125,12 +122,12 @@ int arch_hibernation_header_save(void *addr, unsigned int max_size)
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return -EOVERFLOW;
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arch_hdr_invariants(&hdr->invariants);
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hdr->ttbr1_el1 = virt_to_phys(swapper_pg_dir);
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hdr->ttbr1_el1 = __pa_symbol(swapper_pg_dir);
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hdr->reenter_kernel = _cpu_resume;
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/* We can't use __hyp_get_vectors() because kvm may still be loaded */
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if (el2_reset_needed())
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hdr->__hyp_stub_vectors = virt_to_phys(__hyp_stub_vectors);
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hdr->__hyp_stub_vectors = __pa_symbol(__hyp_stub_vectors);
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else
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hdr->__hyp_stub_vectors = 0;
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@ -460,7 +457,6 @@ int swsusp_arch_resume(void)
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void *zero_page;
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size_t exit_size;
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pgd_t *tmp_pg_dir;
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void *lm_restore_pblist;
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phys_addr_t phys_hibernate_exit;
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void __noreturn (*hibernate_exit)(phys_addr_t, phys_addr_t, void *,
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void *, phys_addr_t, phys_addr_t);
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@ -480,12 +476,6 @@ int swsusp_arch_resume(void)
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if (rc)
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goto out;
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/*
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* Since we only copied the linear map, we need to find restore_pblist's
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* linear map address.
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*/
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lm_restore_pblist = LMADDR(restore_pblist);
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/*
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* We need a zero page that is zero before & after resume in order to
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* to break before make on the ttbr1 page tables.
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@ -537,7 +527,7 @@ int swsusp_arch_resume(void)
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}
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hibernate_exit(virt_to_phys(tmp_pg_dir), resume_hdr.ttbr1_el1,
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resume_hdr.reenter_kernel, lm_restore_pblist,
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resume_hdr.reenter_kernel, restore_pblist,
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resume_hdr.__hyp_stub_vectors, virt_to_phys(zero_page));
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out:
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@ -96,7 +96,7 @@ static void __kprobes *patch_map(void *addr, int fixmap)
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if (module && IS_ENABLED(CONFIG_DEBUG_SET_MODULE_RONX))
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page = vmalloc_to_page(addr);
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else if (!module)
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page = pfn_to_page(PHYS_PFN(__pa(addr)));
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page = phys_to_page(__pa_symbol(addr));
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else
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return addr;
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@ -20,6 +20,7 @@
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#include <linux/smp.h>
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#include <linux/delay.h>
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#include <linux/psci.h>
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#include <linux/mm.h>
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#include <uapi/linux/psci.h>
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@ -45,7 +46,7 @@ static int __init cpu_psci_cpu_prepare(unsigned int cpu)
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static int cpu_psci_cpu_boot(unsigned int cpu)
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{
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int err = psci_ops.cpu_on(cpu_logical_map(cpu), __pa(secondary_entry));
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int err = psci_ops.cpu_on(cpu_logical_map(cpu), __pa_symbol(secondary_entry));
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if (err)
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pr_err("failed to boot CPU%d (%d)\n", cpu, err);
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@ -42,6 +42,7 @@
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#include <linux/of_fdt.h>
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#include <linux/efi.h>
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#include <linux/psci.h>
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#include <linux/mm.h>
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#include <asm/acpi.h>
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#include <asm/fixmap.h>
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@ -199,10 +200,10 @@ static void __init request_standard_resources(void)
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struct memblock_region *region;
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struct resource *res;
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kernel_code.start = virt_to_phys(_text);
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kernel_code.end = virt_to_phys(__init_begin - 1);
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kernel_data.start = virt_to_phys(_sdata);
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kernel_data.end = virt_to_phys(_end - 1);
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kernel_code.start = __pa_symbol(_text);
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kernel_code.end = __pa_symbol(__init_begin - 1);
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kernel_data.start = __pa_symbol(_sdata);
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kernel_data.end = __pa_symbol(_end - 1);
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for_each_memblock(memory, region) {
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res = alloc_bootmem_low(sizeof(*res));
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@ -21,6 +21,7 @@
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#include <linux/of.h>
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#include <linux/smp.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <asm/cacheflush.h>
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#include <asm/cpu_ops.h>
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@ -98,7 +99,7 @@ static int smp_spin_table_cpu_prepare(unsigned int cpu)
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* boot-loader's endianess before jumping. This is mandated by
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* the boot protocol.
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*/
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writeq_relaxed(__pa(secondary_holding_pen), release_addr);
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writeq_relaxed(__pa_symbol(secondary_holding_pen), release_addr);
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__flush_dcache_area((__force void *)release_addr,
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sizeof(*release_addr));
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@ -123,6 +123,7 @@ static int __init vdso_init(void)
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{
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int i;
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struct page **vdso_pagelist;
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unsigned long pfn;
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if (memcmp(&vdso_start, "\177ELF", 4)) {
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pr_err("vDSO is not a valid ELF object!\n");
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@ -140,11 +141,14 @@ static int __init vdso_init(void)
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return -ENOMEM;
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/* Grab the vDSO data page. */
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vdso_pagelist[0] = pfn_to_page(PHYS_PFN(__pa(vdso_data)));
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vdso_pagelist[0] = phys_to_page(__pa_symbol(vdso_data));
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/* Grab the vDSO code pages. */
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pfn = sym_to_pfn(&vdso_start);
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for (i = 0; i < vdso_pages; i++)
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vdso_pagelist[i + 1] = pfn_to_page(PHYS_PFN(__pa(&vdso_start)) + i);
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vdso_pagelist[i + 1] = pfn_to_page(pfn + i);
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vdso_spec[0].pages = &vdso_pagelist[0];
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vdso_spec[1].pages = &vdso_pagelist[1];
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@ -36,6 +36,7 @@
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#include <linux/efi.h>
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#include <linux/swiotlb.h>
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#include <linux/vmalloc.h>
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#include <linux/mm.h>
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#include <asm/boot.h>
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#include <asm/fixmap.h>
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@ -209,8 +210,8 @@ void __init arm64_memblock_init(void)
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* linear mapping. Take care not to clip the kernel which may be
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* high in memory.
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*/
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memblock_remove(max_t(u64, memstart_addr + linear_region_size, __pa(_end)),
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ULLONG_MAX);
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memblock_remove(max_t(u64, memstart_addr + linear_region_size,
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__pa_symbol(_end)), ULLONG_MAX);
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if (memstart_addr + linear_region_size < memblock_end_of_DRAM()) {
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/* ensure that memstart_addr remains sufficiently aligned */
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memstart_addr = round_up(memblock_end_of_DRAM() - linear_region_size,
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@ -225,7 +226,7 @@ void __init arm64_memblock_init(void)
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*/
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if (memory_limit != (phys_addr_t)ULLONG_MAX) {
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memblock_mem_limit_remove_map(memory_limit);
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memblock_add(__pa(_text), (u64)(_end - _text));
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memblock_add(__pa_symbol(_text), (u64)(_end - _text));
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}
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if (IS_ENABLED(CONFIG_BLK_DEV_INITRD) && initrd_start) {
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@ -278,7 +279,7 @@ void __init arm64_memblock_init(void)
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* Register the kernel text, kernel data, initrd, and initial
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* pagetables with memblock.
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*/
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memblock_reserve(__pa(_text), _end - _text);
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memblock_reserve(__pa_symbol(_text), _end - _text);
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#ifdef CONFIG_BLK_DEV_INITRD
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if (initrd_start) {
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memblock_reserve(initrd_start, initrd_end - initrd_start);
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@ -484,7 +485,8 @@ void __init mem_init(void)
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void free_initmem(void)
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{
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free_reserved_area(__va(__pa(__init_begin)), __va(__pa(__init_end)),
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free_reserved_area(lm_alias(__init_begin),
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lm_alias(__init_end),
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0, "unused kernel");
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/*
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* Unmap the __init region but leave the VM area in place. This
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@ -15,6 +15,7 @@
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#include <linux/kernel.h>
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#include <linux/memblock.h>
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#include <linux/start_kernel.h>
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#include <linux/mm.h>
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#include <asm/mmu_context.h>
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#include <asm/kernel-pgtable.h>
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@ -26,6 +27,13 @@
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static pgd_t tmp_pg_dir[PTRS_PER_PGD] __initdata __aligned(PGD_SIZE);
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/*
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* The p*d_populate functions call virt_to_phys implicitly so they can't be used
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* directly on kernel symbols (bm_p*d). All the early functions are called too
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* early to use lm_alias so __p*d_populate functions must be used to populate
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* with the physical address from __pa_symbol.
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*/
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static void __init kasan_early_pte_populate(pmd_t *pmd, unsigned long addr,
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unsigned long end)
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{
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@ -33,12 +41,12 @@ static void __init kasan_early_pte_populate(pmd_t *pmd, unsigned long addr,
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unsigned long next;
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if (pmd_none(*pmd))
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pmd_populate_kernel(&init_mm, pmd, kasan_zero_pte);
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__pmd_populate(pmd, __pa_symbol(kasan_zero_pte), PMD_TYPE_TABLE);
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pte = pte_offset_kimg(pmd, addr);
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do {
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next = addr + PAGE_SIZE;
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set_pte(pte, pfn_pte(virt_to_pfn(kasan_zero_page),
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set_pte(pte, pfn_pte(sym_to_pfn(kasan_zero_page),
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PAGE_KERNEL));
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} while (pte++, addr = next, addr != end && pte_none(*pte));
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}
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@ -51,7 +59,7 @@ static void __init kasan_early_pmd_populate(pud_t *pud,
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unsigned long next;
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if (pud_none(*pud))
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pud_populate(&init_mm, pud, kasan_zero_pmd);
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__pud_populate(pud, __pa_symbol(kasan_zero_pmd), PMD_TYPE_TABLE);
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pmd = pmd_offset_kimg(pud, addr);
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do {
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@ -68,7 +76,7 @@ static void __init kasan_early_pud_populate(pgd_t *pgd,
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unsigned long next;
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if (pgd_none(*pgd))
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pgd_populate(&init_mm, pgd, kasan_zero_pud);
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__pgd_populate(pgd, __pa_symbol(kasan_zero_pud), PUD_TYPE_TABLE);
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pud = pud_offset_kimg(pgd, addr);
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do {
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@ -148,7 +156,7 @@ void __init kasan_init(void)
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*/
|
||||
memcpy(tmp_pg_dir, swapper_pg_dir, sizeof(tmp_pg_dir));
|
||||
dsb(ishst);
|
||||
cpu_replace_ttbr1(tmp_pg_dir);
|
||||
cpu_replace_ttbr1(lm_alias(tmp_pg_dir));
|
||||
|
||||
clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END);
|
||||
|
||||
|
|
@ -199,10 +207,10 @@ void __init kasan_init(void)
|
|||
*/
|
||||
for (i = 0; i < PTRS_PER_PTE; i++)
|
||||
set_pte(&kasan_zero_pte[i],
|
||||
pfn_pte(virt_to_pfn(kasan_zero_page), PAGE_KERNEL_RO));
|
||||
pfn_pte(sym_to_pfn(kasan_zero_page), PAGE_KERNEL_RO));
|
||||
|
||||
memset(kasan_zero_page, 0, PAGE_SIZE);
|
||||
cpu_replace_ttbr1(swapper_pg_dir);
|
||||
cpu_replace_ttbr1(lm_alias(swapper_pg_dir));
|
||||
|
||||
/* At this point kasan is fully initialized. Enable error messages */
|
||||
init_task.kasan_depth = 0;
|
||||
|
|
|
|||
|
|
@ -28,6 +28,7 @@
|
|||
#include <linux/memblock.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/mm.h>
|
||||
|
||||
#include <asm/barrier.h>
|
||||
#include <asm/cputype.h>
|
||||
|
|
@ -359,8 +360,8 @@ static void create_mapping_late(phys_addr_t phys, unsigned long virt,
|
|||
|
||||
static void __init __map_memblock(pgd_t *pgd, phys_addr_t start, phys_addr_t end)
|
||||
{
|
||||
unsigned long kernel_start = __pa(_text);
|
||||
unsigned long kernel_end = __pa(__init_begin);
|
||||
unsigned long kernel_start = __pa_symbol(_text);
|
||||
unsigned long kernel_end = __pa_symbol(__init_begin);
|
||||
|
||||
/*
|
||||
* Take care not to create a writable alias for the
|
||||
|
|
@ -427,14 +428,14 @@ void mark_rodata_ro(void)
|
|||
unsigned long section_size;
|
||||
|
||||
section_size = (unsigned long)_etext - (unsigned long)_text;
|
||||
create_mapping_late(__pa(_text), (unsigned long)_text,
|
||||
create_mapping_late(__pa_symbol(_text), (unsigned long)_text,
|
||||
section_size, PAGE_KERNEL_ROX);
|
||||
/*
|
||||
* mark .rodata as read only. Use __init_begin rather than __end_rodata
|
||||
* to cover NOTES and EXCEPTION_TABLE.
|
||||
*/
|
||||
section_size = (unsigned long)__init_begin - (unsigned long)__start_rodata;
|
||||
create_mapping_late(__pa(__start_rodata), (unsigned long)__start_rodata,
|
||||
create_mapping_late(__pa_symbol(__start_rodata), (unsigned long)__start_rodata,
|
||||
section_size, PAGE_KERNEL_RO);
|
||||
|
||||
/* flush the TLBs after updating live kernel mappings */
|
||||
|
|
@ -446,7 +447,7 @@ void mark_rodata_ro(void)
|
|||
static void __init map_kernel_segment(pgd_t *pgd, void *va_start, void *va_end,
|
||||
pgprot_t prot, struct vm_struct *vma)
|
||||
{
|
||||
phys_addr_t pa_start = __pa(va_start);
|
||||
phys_addr_t pa_start = __pa_symbol(va_start);
|
||||
unsigned long size = va_end - va_start;
|
||||
|
||||
BUG_ON(!PAGE_ALIGNED(pa_start));
|
||||
|
|
@ -494,7 +495,7 @@ static void __init map_kernel(pgd_t *pgd)
|
|||
*/
|
||||
BUG_ON(!IS_ENABLED(CONFIG_ARM64_16K_PAGES));
|
||||
set_pud(pud_set_fixmap_offset(pgd, FIXADDR_START),
|
||||
__pud(__pa(bm_pmd) | PUD_TYPE_TABLE));
|
||||
__pud(__pa_symbol(bm_pmd) | PUD_TYPE_TABLE));
|
||||
pud_clear_fixmap();
|
||||
} else {
|
||||
BUG();
|
||||
|
|
@ -525,7 +526,7 @@ void __init paging_init(void)
|
|||
*/
|
||||
cpu_replace_ttbr1(__va(pgd_phys));
|
||||
memcpy(swapper_pg_dir, pgd, PAGE_SIZE);
|
||||
cpu_replace_ttbr1(swapper_pg_dir);
|
||||
cpu_replace_ttbr1(lm_alias(swapper_pg_dir));
|
||||
|
||||
pgd_clear_fixmap();
|
||||
memblock_free(pgd_phys, PAGE_SIZE);
|
||||
|
|
@ -534,7 +535,7 @@ void __init paging_init(void)
|
|||
* We only reuse the PGD from the swapper_pg_dir, not the pud + pmd
|
||||
* allocated with it.
|
||||
*/
|
||||
memblock_free(__pa(swapper_pg_dir) + PAGE_SIZE,
|
||||
memblock_free(__pa_symbol(swapper_pg_dir) + PAGE_SIZE,
|
||||
SWAPPER_DIR_SIZE - PAGE_SIZE);
|
||||
}
|
||||
|
||||
|
|
@ -645,6 +646,12 @@ static inline pte_t * fixmap_pte(unsigned long addr)
|
|||
return &bm_pte[pte_index(addr)];
|
||||
}
|
||||
|
||||
/*
|
||||
* The p*d_populate functions call virt_to_phys implicitly so they can't be used
|
||||
* directly on kernel symbols (bm_p*d). This function is called too early to use
|
||||
* lm_alias so __p*d_populate functions must be used to populate with the
|
||||
* physical address from __pa_symbol.
|
||||
*/
|
||||
void __init early_fixmap_init(void)
|
||||
{
|
||||
pgd_t *pgd;
|
||||
|
|
@ -654,7 +661,7 @@ void __init early_fixmap_init(void)
|
|||
|
||||
pgd = pgd_offset_k(addr);
|
||||
if (CONFIG_PGTABLE_LEVELS > 3 &&
|
||||
!(pgd_none(*pgd) || pgd_page_paddr(*pgd) == __pa(bm_pud))) {
|
||||
!(pgd_none(*pgd) || pgd_page_paddr(*pgd) == __pa_symbol(bm_pud))) {
|
||||
/*
|
||||
* We only end up here if the kernel mapping and the fixmap
|
||||
* share the top level pgd entry, which should only happen on
|
||||
|
|
@ -663,12 +670,14 @@ void __init early_fixmap_init(void)
|
|||
BUG_ON(!IS_ENABLED(CONFIG_ARM64_16K_PAGES));
|
||||
pud = pud_offset_kimg(pgd, addr);
|
||||
} else {
|
||||
pgd_populate(&init_mm, pgd, bm_pud);
|
||||
if (pgd_none(*pgd))
|
||||
__pgd_populate(pgd, __pa_symbol(bm_pud), PUD_TYPE_TABLE);
|
||||
pud = fixmap_pud(addr);
|
||||
}
|
||||
pud_populate(&init_mm, pud, bm_pmd);
|
||||
if (pud_none(*pud))
|
||||
__pud_populate(pud, __pa_symbol(bm_pmd), PMD_TYPE_TABLE);
|
||||
pmd = fixmap_pmd(addr);
|
||||
pmd_populate_kernel(&init_mm, pmd, bm_pte);
|
||||
__pmd_populate(pmd, __pa_symbol(bm_pte), PMD_TYPE_TABLE);
|
||||
|
||||
/*
|
||||
* The boot-ioremap range spans multiple pmds, for which
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче