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* um: Fix __swp_type()Richard Weinberger2012-05-311-2/+2
| | | | | | | | | | | | commit 2b76ebaa728f8a3967c52aa189261c72fe56a6f1 upstream. The current __swp_type() function uses a too small bitshift. Using more than one swap files causes bad pages because the type bits clash with other page flags. Analyzed-by: Hugh Dickins <hughd@google.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
* um: Implement a custom pte_same() functionRichard Weinberger2012-05-311-0/+6
| | | | | | | | | | | | | | | commit f15b9000eb1d09bbaa4b0a6b2089d7e1f64e84b3 upstream. UML uses the _PAGE_NEWPAGE flag to mark pages which are not jet installed on the host side using mmap(). pte_same() has to ignore this flag, otherwise unuse_pte_range() is unable to unuse the page because two identical page tables entries with different _PAGE_NEWPAGE flags would not match and swapoff() would never return. Analyzed-by: Hugh Dickins <hughd@google.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
* Merge branch 'for-linus' of git://github.com/richardweinberger/linuxLinus Torvalds2011-11-02224-8590/+340
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://github.com/richardweinberger/linux: (90 commits) um: fix ubd cow size um: Fix kmalloc argument order in um/vdso/vma.c um: switch to use of drivers/Kconfig UserModeLinux-HOWTO.txt: fix a typo UserModeLinux-HOWTO.txt: remove ^H characters um: we need sys/user.h only on i386 um: merge delay_{32,64}.c um: distribute exports to where exported stuff is defined um: kill system-um.h um: generic ftrace.h will do... um: segment.h is x86-only and needed only there um: asm/pda.h is not needed anymore um: hw_irq.h can go generic as well um: switch to generic-y um: clean Kconfig up a bit um: a couple of missing dependencies... um: kill useless argument of free_chan() and free_one_chan() um: unify ptrace_user.h um: unify KSTK_... um: fix gcov build breakage ...
| * um: fix ubd cow sizeRichard Weinberger2011-11-021-1/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | ubd_file_size() cannot use ubd_dev->cow.file because at this time ubd_dev->cow.file is not initialized. Therefore, ubd_file_size() will always report a wrong disk size when COW files are used. Reading from /dev/ubd* would crash the kernel. We have to read the correct disk size from the COW file's backing file. Signed-off-by: Richard Weinberger <richard@nod.at> CC: stable@kernel.org
| * um: switch to use of drivers/KconfigAl Viro2011-11-021-22/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: distribute exports to where exported stuff is definedAl Viro2011-11-0210-54/+40
| | | | | | | | | | | | | | ksyms.c is down to the stuff defined in various USER_OBJS Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: kill system-um.hAl Viro2011-11-022-46/+37
| | | | | | | | | | | | | | most of it belonged in irqflags.h, actually Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: generic ftrace.h will do...Al Viro2011-11-022-1/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: segment.h is x86-only and needed only thereAl Viro2011-11-021-10/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: asm/pda.h is not needed anymoreAl Viro2011-11-021-21/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: hw_irq.h can go generic as wellAl Viro2011-11-022-8/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: switch to generic-yAl Viro2011-11-0213-59/+2
| | | | | | | | | | | | | | kill wrapper headers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: clean Kconfig up a bitAl Viro2011-11-022-113/+7
| | | | | | | | | | | | | | | | | | | | * kill duplicates with drivers/char/Kconfig * take watchdog one into drivers/watchdog/Kconfig * take mmapper to arch/um/Kconfig.um * rename Kconfig.char menu to "UML Character Devices" Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: kill useless argument of free_chan() and free_one_chan()Al Viro2011-11-021-5/+5
| | | | | | | | | | | | | | delay_free_irq is always 0 for those... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: unify ptrace_user.hAl Viro2011-11-023-8/+7
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: fix gcov build breakageAl Viro2011-11-021-15/+0
| | | | | | | | | | | | | | | | | | a) exports in gmon_syms.c duplicate kernel/gcov/* ones b) excluding -pg in vdso compile is not enough - -fprofile-arcs and -ftest-coverage also needs to be excluded Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: page_offset.h is never usedAl Viro2011-11-021-1/+0
| | | | | | | | | | | | | | ... and neither is the only define in it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: irq_vectors.h just shadows x86 oneAl Viro2011-11-021-10/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: required-features.h is there only to shadow x86 one...Al Viro2011-11-021-9/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: asm/apic.h is there only to shadow the x86 one...Al Viro2011-11-021-4/+0
| | | | | | | | | | | | | | ... so take it to arch/um/x86/asm. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take ubd_user.h to its users...Al Viro2011-11-021-0/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take ldt.h to arch/x86/um/asm/mm_context.hAl Viro2011-11-022-39/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | it's x86-only and we have no business playing with it in asm/mmu.h; make the latter have struct uml_arch_mm_context arch; instead of struct uml_ldt ldt; and let arch/<subarch>/um/asm/mm_context.h decide what'll be in there. While we are at it, kill host_ldt.h - it's not needed in part of places that include it (we want asm/ldt.h in those) and it can be trivially expanded into the single remaining one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: merge os-Linux/tls.c into arch/x86/um/os-Linux/tls.cAl Viro2011-11-023-42/+2
| | | | | | | | | | | | | | | | | | it's i386-specific; moreover, analogs on other targets have incompatible interface - PTRACE_GET_THREAD_AREA does exist elsewhere, but struct user_desc does *not* Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: move asm/desc.h into arch/x86/um/asmAl Viro2011-11-021-16/+0
| | | | | | | | | | | | | | its only purpose is to shadow the x86 asm/desc.h Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take um_mmu.h to asm/mmu.h, clean asm/mmu_context.h a bitAl Viro2011-11-023-34/+19
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: kill um_uaccess.hAl Viro2011-11-022-99/+84
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take mconsole*.h to arch/um/driversAl Viro2011-11-022-0/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take chan_*.h and line.h to arch/um/driversAl Viro2011-11-028-10/+8
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take register_winch_irq() into the caller of is_skas_winch()Al Viro2011-11-022-6/+7
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: kill shared/mem_kern.hAl Viro2011-11-022-21/+0
| | | | | | | | | | | | | | ... nothing declared there exists Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: kill shared/tlb.hAl Viro2011-11-023-15/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: make flush_tlb_kernel_range_common() staticAl Viro2011-11-022-3/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: kill shared/task.h and HOST_TASK_REGSAl Viro2011-11-022-10/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: shared/syscall.h is not even includedAl Viro2011-11-021-12/+0
| | | | | | | | | | | | | | ... and functions declared in it do not exist Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: don't include kern.h unless it's neededAl Viro2011-11-022-2/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: trim kern.hAl Viro2011-11-021-18/+0
| | | | | | | | | | | | | | | | most of the functions in there are not used in anything that ends up including that header... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: make load_initrd() static, kill shared/initrd.hAl Viro2011-11-022-14/+2
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: bury unused macros around ptrace.hAl Viro2011-11-021-4/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take arch/um/sys-x86 to arch/x86/umAl Viro2011-11-0293-6775/+14
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: merge Makefile-{i386,x86_64}Al Viro2011-11-023-28/+35
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: trim detritus from Makefile-i386Al Viro2011-11-021-7/+3
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: arch_hweight.h is needed only on uml-x86Al Viro2011-11-021-0/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: merge kernel_offsets_*.hAl Viro2011-11-023-49/+21
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: merge skas_ptrace.h 32/64bit variantsAl Viro2011-11-023-48/+21
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: sysdep/barrier.h is not used for anythingAl Viro2011-11-024-22/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: shared/process.h is empty now; kill itAl Viro2011-11-026-14/+0
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: finish conversion to mcontext_tAl Viro2011-11-029-81/+67
| | | | | | | | | | | | | | | | now we don't mix host and guest signal frame layouts anymore; moreover, we don't need host's struct sigcontext at all. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: start switching the references to host mcontext_t to its userland typeAl Viro2011-11-027-26/+33
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take userland definition of barrier() to user.hAl Viro2011-11-023-6/+3
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
| * um: take system.h out of shared/sysdepAl Viro2011-11-022-2/+1
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Richard Weinberger <richard@nod.at>
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