Re: [PATCH v4 5/8] arch: introduce set_direct_map_valid_noflush()
Mike Rapoport <[email protected]>
| Newsgroups | gmane.linux.ports.ppc64.devel,gmane.linux.kernel.bpf,gmane.linux.ports.alpha,gmane.linux.kernel.cross-arch,gmane.linux.ports.arm.kernel,gmane.linux.ports.hexagon,gmane.linux.kernel,gmane.linux.ports.mips,gmane.linux.kernel.mm,gmane.linux.kernel.modules,gmane.linux.ports.parisc,gmane.linux.ports.riscv,gmane.linux.ports.sh.devel,gmane.linux.kernel.arc,gmane.linux.uml.devel,gmane.linux.ports.sparc |
|---|---|
| Message-ID | <[email protected]> |
Hi Huacai, On Tue, Oct 08, 2024 at 10:11:25AM +0800, Huacai Chen wrote: > Hi, Mike, > > On Mon, Oct 7, 2024 at 2:30 PM Mike Rapoport <[email protected]> wrote: > > > > From: "Mike Rapoport (Microsoft)" <[email protected]> > > > > Add an API that will allow updates of the direct/linear map for a set of > > physically contiguous pages. > > > > It will be used in the following patches. > > > > Signed-off-by: Mike Rapoport (Microsoft) <[email protected]> > > --- > > arch/arm64/include/asm/set_memory.h | 1 + > > arch/arm64/mm/pageattr.c | 10 ++++++++++ > > arch/loongarch/include/asm/set_memory.h | 1 + > > arch/loongarch/mm/pageattr.c | 21 +++++++++++++++++++++ > > arch/riscv/include/asm/set_memory.h | 1 + > > arch/riscv/mm/pageattr.c | 15 +++++++++++++++ > > arch/s390/include/asm/set_memory.h | 1 + > > arch/s390/mm/pageattr.c | 11 +++++++++++ > > arch/x86/include/asm/set_memory.h | 1 + > > arch/x86/mm/pat/set_memory.c | 8 ++++++++ > > include/linux/set_memory.h | 6 ++++++ > > 11 files changed, 76 insertions(+) > > > > diff --git a/arch/loongarch/include/asm/set_memory.h b/arch/loongarch/include/asm/set_memory.h > > index d70505b6676c..55dfaefd02c8 100644 > > --- a/arch/loongarch/include/asm/set_memory.h > > +++ b/arch/loongarch/include/asm/set_memory.h > > @@ -17,5 +17,6 @@ int set_memory_rw(unsigned long addr, int numpages); > > bool kernel_page_present(struct page *page); > > int set_direct_map_default_noflush(struct page *page); > > int set_direct_map_invalid_noflush(struct page *page); > > +int set_direct_map_valid_noflush(struct page *page, unsigned nr, bool valid); > > > > #endif /* _ASM_LOONGARCH_SET_MEMORY_H */ > > diff --git a/arch/loongarch/mm/pageattr.c b/arch/loongarch/mm/pageattr.c > > index ffd8d76021d4..f14b40c968b4 100644 > > --- a/arch/loongarch/mm/pageattr.c > > +++ b/arch/loongarch/mm/pageattr.c > > @@ -216,3 +216,24 @@ int set_direct_map_invalid_noflush(struct page *page) > > > > return __set_memory(addr, 1, __pgprot(0), __pgprot(_PAGE_PRESENT | _PAGE_VALID)); > > } > > + > > +int set_direct_map_valid_noflush(struct page *page, unsigned nr, bool valid) > > +{ > > + unsigned long addr = (unsigned long)page_address(page); > > + pgprot_t set, clear; > > + > > + return __set_memory((unsigned long)page_address(page), nr, set, clear); > This line should be removed. Argh, copy/paste is so hard... Thanks, will do. > Huacai -- Sincerely yours, Mike.