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Date: Mon, 30 Jun 2014 14:53:11 -0700 From: Andy Lutomirski <luto@...capital.net> To: x86@...nel.org, hpa@...or.org Cc: linux-kernel@...r.kernel.org, Andy Lutomirski <luto@...capital.net> Subject: [PATCH v2 00/10] x86 and others: vsyscall and vdso cleanups This is v2. I'm resending it because the fallout from the 3.16 changes seems to have settled down, and because arm is about to run in to the same problem that I ran in to, which is fixed in the big cross-arch patch. Patch 1 fixes a minor bug; it might make sense to backport it. Patch 3 removes the vsyscall mapping when vsyscall=none. Patch 4 and 5 remove some unnecessary vvars. gtod is the only one left now. Patch 9 is a big cross-arch cleanup. The old code was supposedly generic, but it was only useful for ia64, and it was actively harmful for lots of other architectures. Patch 10 makes vsyscall emulation optional. It's hidden under CONFIG_EXPERT. If this should be split or reordered, please let me know. NB: I wouldn't be surprised if Nathan Lynch ends up wanting patch 9 for ARM's upcoming vdso, so it would be nice to get at least that patch into an upstream-pointing git tree somewhere. I'm not sure what the appropriate tree is. Changes from v1: - Rebased to 3.16-rc3. - The last patch is new. Andy Lutomirski (10): x86_64,vsyscall: Fix warn_bad_vsyscall log output x86_64,vsyscall: Move all of the gate_area code to vsyscall_64.c x86_64,vsyscall: Turn vsyscalls all the way off when vsyscall=none x86_64,vdso: Remove jiffies from the vvar page x86,vdso: Replace vgetcpu_mode with static_cpu_has x86_64: Move getcpu code from vsyscall_64.c to vdso/vma.c x86_64,vsyscall: Rewrite comment and clean up headers in vsyscall code x86_64,vdso: Clean up vgetcpu init and merge the vdso initcalls arm64,ia64,ppc,s390,sh,tile,um,x86,mm: Remove default gate area x86_64,vsyscall: Make vsyscall emulation configurable arch/arm64/include/asm/page.h | 3 - arch/arm64/kernel/vdso.c | 19 ----- arch/ia64/include/asm/page.h | 2 + arch/ia64/mm/init.c | 26 +++++++ arch/powerpc/include/asm/page.h | 3 - arch/powerpc/kernel/vdso.c | 16 ---- arch/s390/include/asm/page.h | 2 - arch/s390/kernel/vdso.c | 15 ---- arch/sh/include/asm/page.h | 5 -- arch/sh/kernel/vsyscall/vsyscall.c | 15 ---- arch/tile/include/asm/page.h | 6 -- arch/tile/kernel/vdso.c | 15 ---- arch/um/include/asm/page.h | 5 ++ arch/x86/Kconfig | 18 +++++ arch/x86/include/asm/fixmap.h | 2 + arch/x86/include/asm/page.h | 1 - arch/x86/include/asm/page_64.h | 4 + arch/x86/include/asm/vgtod.h | 21 +++++ arch/x86/include/asm/vsyscall.h | 33 ++------ arch/x86/include/asm/vvar.h | 2 - arch/x86/kernel/Makefile | 3 +- arch/x86/kernel/cpu/common.c | 10 --- arch/x86/kernel/setup.c | 2 - arch/x86/kernel/time.c | 2 +- arch/x86/kernel/vsyscall_64.c | 155 ++++++++++++++++--------------------- arch/x86/mm/init_64.c | 49 ------------ arch/x86/um/asm/elf.h | 1 - arch/x86/um/mem_64.c | 15 ---- arch/x86/vdso/vclock_gettime.c | 3 + arch/x86/vdso/vdso32-setup.c | 19 +---- arch/x86/vdso/vgetcpu.c | 5 +- arch/x86/vdso/vma.c | 81 ++++++++++++++----- arch/x86/xen/mmu.c | 6 +- include/linux/mm.h | 17 ++-- mm/memory.c | 38 --------- mm/nommu.c | 5 -- 36 files changed, 239 insertions(+), 385 deletions(-) -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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