On Mon, May 15, 2023 at 05:08:45PM +0800, Baoquan He wrote: > From: Christophe Leroy <christophe.leroy@xxxxxxxxxx> > > Architectures like powerpc have a dedicated space for IOREMAP mappings. > > If so, use it in generic_ioremap_pro(). > > Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx> > Signed-off-by: Baoquan He <bhe@xxxxxxxxxx> Reviewed-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx> > --- > mm/ioremap.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/mm/ioremap.c b/mm/ioremap.c > index 2fbe6b9bc50e..4a7749d85044 100644 > --- a/mm/ioremap.c > +++ b/mm/ioremap.c > @@ -35,8 +35,13 @@ void __iomem *generic_ioremap_prot(phys_addr_t phys_addr, size_t size, > if (!ioremap_allowed(phys_addr, size, pgprot_val(prot))) > return NULL; > > +#ifdef IOREMAP_START > + area = __get_vm_area_caller(size, VM_IOREMAP, IOREMAP_START, > + IOREMAP_END, __builtin_return_address(0)); > +#else > area = get_vm_area_caller(size, VM_IOREMAP, > __builtin_return_address(0)); > +#endif > if (!area) > return NULL; > vaddr = (unsigned long)area->addr; > @@ -66,7 +71,7 @@ void generic_iounmap(volatile void __iomem *addr) > if (!iounmap_allowed(vaddr)) > return; > > - if (is_vmalloc_addr(vaddr)) > + if (is_ioremap_addr(vaddr)) > vunmap(vaddr); > } > > -- > 2.34.1 > > -- Sincerely yours, Mike.
