diff options
| author | Florian Fainelli <f.fainelli@gmail.com> | 2021-03-30 20:22:07 -0700 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2021-04-06 14:34:02 +0200 |
| commit | dfad83cb7193effb6c853a5c7337ac2274a2e2fc (patch) | |
| tree | f5fcff9ee261de7766baa886c075e957ea69e17a /arch/mips/kernel/vdso.c | |
| parent | 666c1fc90cd82184624d4cc5d124c66025f89a47 (diff) | |
MIPS: Add support for CONFIG_DEBUG_VIRTUAL
Provide hooks to intercept bad usages of virt_to_phys() and
__pa_symbol() throughout the kernel. To make this possible, we need to
rename the current implement of virt_to_phys() into
__virt_to_phys_nodebug() and wrap it around depending on
CONFIG_DEBUG_VIRTUAL.
A similar thing is needed for __pa_symbol() which is now aliased to
__phys_addr_symbol() whose implementation is either the direct return of
RELOC_HIDE or goes through the debug version.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/kernel/vdso.c')
| -rw-r--r-- | arch/mips/kernel/vdso.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c index 7d0b91ad2581..3d0cf471f2fe 100644 --- a/arch/mips/kernel/vdso.c +++ b/arch/mips/kernel/vdso.c @@ -90,7 +90,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) { struct mips_vdso_image *image = current->thread.abi->vdso; struct mm_struct *mm = current->mm; - unsigned long gic_size, vvar_size, size, base, data_addr, vdso_addr, gic_pfn; + unsigned long gic_size, vvar_size, size, base, data_addr, vdso_addr, gic_pfn, gic_base; struct vm_area_struct *vma; int ret; @@ -158,7 +158,8 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) /* Map GIC user page. */ if (gic_size) { - gic_pfn = virt_to_phys(mips_gic_base + MIPS_GIC_USER_OFS) >> PAGE_SHIFT; + gic_base = (unsigned long)mips_gic_base + MIPS_GIC_USER_OFS; + gic_pfn = virt_to_phys((void *)gic_base) >> PAGE_SHIFT; ret = io_remap_pfn_range(vma, base, gic_pfn, gic_size, pgprot_noncached(vma->vm_page_prot)); |