| Message ID | CACRpkdahOz++MD7f=Bmq2f_nT=TQkY5f5vT5PL=YEB4R2B7Vcw@mail.gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [GIT,PULL] Convert virt_to_phys() into static inlines | expand |
On Wed, May 24, 2023, at 14:53, Linus Walleij wrote: > Hi Arnd, > > I am pretty confident of this branch now, so this needs some > rotation in linux-next for the v6.5 kernel. No errors from zeroday! > So please pull it into the arch tree for v6.5. > > If it feels shaky anyway I can set up a separate branch to pull it > into linux-next. I heard you have a way to shake out unknown > issues with stuff like this using randconfigs... I've pushed it out to the asm-generic tree now, and merged it into my randconfig branch, which should tell me about corner cases on arm/arm64 and x86, but it won't find anything else. If I see regressions here, I'll let you know and take it back from the asm-generic tree. Arnd
Hi Arnd, I am pretty confident of this branch now, so this needs some rotation in linux-next for the v6.5 kernel. No errors from zeroday! So please pull it into the arch tree for v6.5. If it feels shaky anyway I can set up a separate branch to pull it into linux-next. I heard you have a way to shake out unknown issues with stuff like this using randconfigs... Yours, Linus Walleij The following changes since commit ac9a78681b921877518763ba0e89202254349d1b: Linux 6.4-rc1 (2023-05-07 13:34:35 -0700) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git tags/virt-to-pfn-for-arch-v6.5 for you to fetch changes up to 8968d8d2bb4f81035138966a18259859fb6bc1ee: m68k/mm: Make pfn accessors static inlines (2023-05-24 14:41:55 +0200) ---------------------------------------------------------------- This is an attempt to harden the typing on virt_to_pfn() and pfn_to_virt(). Making virt_to_pfn() a static inline taking a strongly typed (const void *) makes the contract of a passing a pointer of that type to the function explicit and exposes any misuse of the macro virt_to_pfn() acting polymorphic and accepting many types such as (void *), (unitptr_t) or (unsigned long) as arguments without warnings. For symmetry, we do the same with pfn_to_virt(). The problem with this inconsistent typing was pointed out by Russell King: https://lore.kernel.org/linux-arm-kernel/YoJDKJXc0MJ2QZTb@shell.armlinux.org.uk/ And confirmed by Andrew Morton: https://lore.kernel.org/linux-mm/20220701160004.2ffff4e5ab59a55499f4c736@linux-foundation.org/ So the recognition of the problem is widespread. These platforms have been chosen as initial conversion targets: - ARM - ARM64/Aarch64 - asm-generic (including for example x86) - m68k The idea is that if this goes in, it will block further misuse of the function signatures due to the large compile coverage, and then I can go in and fix the remaining architectures on a one-by-one basis. Some of the patches have been circulated before but were not picked up by subsystem maintainers, so now the arch tree is target for this series. It has passed zeroday builds after a lot of iterations in my personal tree, but there could be some randconfig outliers. New added or deeply hidden problems appear all the time so some minor fallout can be expected. ---------------------------------------------------------------- Linus Walleij (13): fs/proc/kcore.c: Pass a pointer to virt_addr_valid() m68k: Pass a pointer to virt_to_pfn() virt_to_page() ARC: init: Pass a pointer to virt_to_pfn() in init riscv: mm: init: Pass a pointer to virt_to_page() cifs: Pass a pointer to virt_to_page() cifs: Pass a pointer to virt_to_page() in cifsglob netfs: Pass a pointer to virt_to_page() arm64: vdso: Pass (void *) to virt_to_page() xen/netback: Pass (void *) to virt_to_page() asm-generic/page.h: Make pfn accessors static inlines ARM: mm: Make virt_to_pfn() a static inline arm64: memory: Make virt_to_pfn() a static inline m68k/mm: Make pfn accessors static inlines arch/arc/mm/init.c | 2 +- arch/arm/common/sharpsl_param.c | 2 +- arch/arm/include/asm/delay.h | 2 +- arch/arm/include/asm/io.h | 2 +- arch/arm/include/asm/memory.h | 17 ++++++++++++----- arch/arm/include/asm/page.h | 4 ++-- arch/arm/include/asm/pgtable.h | 2 +- arch/arm/include/asm/proc-fns.h | 2 -- arch/arm/include/asm/sparsemem.h | 2 +- arch/arm/include/asm/uaccess-asm.h | 2 +- arch/arm/include/asm/uaccess.h | 2 +- arch/arm/kernel/asm-offsets.c | 2 +- arch/arm/kernel/entry-armv.S | 2 +- arch/arm/kernel/entry-common.S | 2 +- arch/arm/kernel/entry-v7m.S | 2 +- arch/arm/kernel/head-nommu.S | 3 +-- arch/arm/kernel/head.S | 2 +- arch/arm/kernel/hibernate.c | 2 +- arch/arm/kernel/suspend.c | 2 +- arch/arm/kernel/tcm.c | 2 +- arch/arm/kernel/vmlinux-xip.lds.S | 3 +-- arch/arm/kernel/vmlinux.lds.S | 3 +-- arch/arm/mach-berlin/platsmp.c | 2 +- arch/arm/mach-keystone/keystone.c | 2 +- arch/arm/mach-omap2/sleep33xx.S | 2 +- arch/arm/mach-omap2/sleep43xx.S | 2 +- arch/arm/mach-omap2/sleep44xx.S | 2 +- arch/arm/mach-pxa/gumstix.c | 2 +- arch/arm/mach-rockchip/sleep.S | 2 +- arch/arm/mach-sa1100/pm.c | 2 +- arch/arm/mach-shmobile/headsmp-scu.S | 2 +- arch/arm/mach-shmobile/headsmp.S | 2 +- arch/arm/mach-socfpga/headsmp.S | 2 +- arch/arm/mach-spear/spear.h | 2 +- arch/arm/mm/cache-fa.S | 1 - arch/arm/mm/cache-v4wb.S | 1 - arch/arm/mm/dma-mapping.c | 2 +- arch/arm/mm/dump.c | 2 +- arch/arm/mm/init.c | 2 +- arch/arm/mm/kasan_init.c | 1 - arch/arm/mm/mmu.c | 2 +- arch/arm/mm/physaddr.c | 2 +- arch/arm/mm/pmsa-v8.c | 2 +- arch/arm/mm/proc-v7.S | 2 +- arch/arm/mm/proc-v7m.S | 2 +- arch/arm/mm/pv-fixup-asm.S | 2 +- arch/arm64/include/asm/memory.h | 9 ++++++++- arch/arm64/kernel/vdso.c | 2 +- arch/m68k/include/asm/mcf_pgtable.h | 3 +-- arch/m68k/include/asm/page_mm.h | 11 +++++++++-- arch/m68k/include/asm/page_no.h | 11 +++++++++-- arch/m68k/include/asm/sun3_pgtable.h | 4 ++-- arch/m68k/mm/mcfmmu.c | 3 ++- arch/m68k/mm/motorola.c | 4 ++-- arch/m68k/mm/sun3mmu.c | 2 +- arch/m68k/sun3/dvma.c | 2 +- arch/m68k/sun3x/dvma.c | 2 +- arch/riscv/mm/init.c | 4 ++-- drivers/memory/ti-emif-sram-pm.S | 2 +- drivers/net/xen-netback/netback.c | 2 +- fs/cifs/cifsglob.h | 2 +- fs/cifs/smbdirect.c | 2 +- fs/netfs/iterator.c | 2 +- fs/proc/kcore.c | 2 +- include/asm-generic/page.h | 12 ++++++++++-- 65 files changed, 109 insertions(+), 81 deletions(-)