search for: vdso_enabled

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

Hi Andi, Here's a couple of patches to fix up COMPAT_VDSO: The first is a straightforward implementation of Jan's original idea of relocating the VDSO to match its mapped location. Unlike Jan and Zach's version, I changed it to relocate based on the phdrs rather than the sections; the result is pleasantly compact. The second patch takes advantage of the fact that all the

...ernel/sysenter.c Tue Mar 06 00:21:42 2007 +1100 @@ -27,7 +27,7 @@ * Should the kernel map a VDSO page into processes and pass its * address down to glibc upon exec()? */ -#ifdef CONFIG_PARAVIRT +#if defined(CONFIG_COMPAT_VDSO) && defined(CONFIG_RESERVE_TOP) unsigned int __read_mostly vdso_enabled = 0; #else unsigned int __read_mostly vdso_enabled = 1; diff -r f75715e64a3b arch/i386/mm/pgtable.c --- a/arch/i386/mm/pgtable.c Tue Mar 06 00:04:50 2007 +1100 +++ b/arch/i386/mm/pgtable.c Tue Mar 06 00:06:00 2007 +1100 @@ -173,7 +173,7 @@ void reserve_top_address(unsigned long r BUG_ON(fixmaps...

...ernel/sysenter.c Tue Mar 06 00:21:42 2007 +1100 @@ -27,7 +27,7 @@ * Should the kernel map a VDSO page into processes and pass its * address down to glibc upon exec()? */ -#ifdef CONFIG_PARAVIRT +#if defined(CONFIG_COMPAT_VDSO) && defined(CONFIG_RESERVE_TOP) unsigned int __read_mostly vdso_enabled = 0; #else unsigned int __read_mostly vdso_enabled = 1; diff -r f75715e64a3b arch/i386/mm/pgtable.c --- a/arch/i386/mm/pgtable.c Tue Mar 06 00:04:50 2007 +1100 +++ b/arch/i386/mm/pgtable.c Tue Mar 06 00:06:00 2007 +1100 @@ -173,7 +173,7 @@ void reserve_top_address(unsigned long r BUG_ON(fixmaps...

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --

Hi Andi, Four patches: - clean up asm/bugs.h, by moving all the C code into its own C file - split identify_cpu() into boot and secondary variants, so that boot-time setup functions can be marked __init - repost of the COMPAT_VDSO patches with a bit more robustness from unknown DT_tags, and functions marked __init, since all this is boot-time only setup. Thanks, J --

...and int munmap(void *start, size_t length); Where could we obtain the source code for the system function: void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset)? Thank you. We have already run the following commands $ su # vi /etc/sysctl.conf ...and append vm.vdso_enabled = 0 vm.mmap_min_addr = 4096 # # /sbin/sysctl -p ... vm.vdso_enabled = 0 vm.mmap_min_addr = 4096 # exit Thank you. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20110515/ca1555cb/attachment-00...

Hi Andi, Here's a little batch of cleanups: - re-enable VDSO when PARAVIRT is enabled - make the parainstructions symbols match the other altinstructions naming convention - add kernel command-line options to disable altinstructions for smp and pv_ops Oh, and I'm mailing your noreplacement patch back at you, for no particularly good reason. J --

Hi Andi, Here's a little batch of cleanups: - re-enable VDSO when PARAVIRT is enabled - make the parainstructions symbols match the other altinstructions naming convention - add kernel command-line options to disable altinstructions for smp and pv_ops Oh, and I'm mailing your noreplacement patch back at you, for no particularly good reason. J --

...= -#ifndef CONFIG_COMPAT_VDSO -#define ARCH_HAS_SETUP_ADDITIONAL_PAGES struct linux_binprm; + +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES extern int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack); -#endif = extern unsigned int vdso_enabled; = #define ARCH_DLINFO \ do if (vdso_enabled) { \ NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_COMPAT_BASE); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE);\ } while (0) = #endif Index: linux-2.6.21/include/asm-i386/fixmap.h =3D=3D=3D=3D=3D...

...= -#ifndef CONFIG_COMPAT_VDSO -#define ARCH_HAS_SETUP_ADDITIONAL_PAGES struct linux_binprm; + +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES extern int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack); -#endif = extern unsigned int vdso_enabled; = #define ARCH_DLINFO \ do if (vdso_enabled) { \ NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \ - NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_COMPAT_BASE); \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE);\ } while (0) = #endif Index: linux-2.6.21/include/asm-i386/fixmap.h =3D=3D=3D=3D=3D...

...+subsys_initcall(sysenter_setup); #ifdef CONFIG_SYSCTL /* Register vsyscall32 into the ABI table */ diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c index ac74869..43456ee 100644 --- a/arch/x86/vdso/vma.c +++ b/arch/x86/vdso/vma.c @@ -74,7 +74,7 @@ static int __init init_vdso_vars(void) vdso_enabled = 0; return -ENOMEM; } -__initcall(init_vdso_vars); +subsys_initcall(init_vdso_vars); struct linux_binprm; diff --git a/include/linux/io.h b/include/linux/io.h index 6c7f0ba..7fd2d21 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -29,10 +29,10 @@ void __iowrite64_copy(void __io...

...min_addr = 4096 vm.nr_hugepages = 0 vm.nr_overcommit_hugepages = 0 vm.nr_pdflush_threads = 0 vm.overcommit_memory = 0 vm.overcommit_ratio = 50 vm.page-cluster = 3 vm.percpu_pagelist_fraction = 0 vm.scan_unevictable_pages = 0 vm.stat_interval = 1 vm.swappiness = 30 vm.user_reserve_kbytes = 131072 vm.vdso_enabled = 1 vm.vfs_cache_pressure = 100 # ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 292370 max locked memory (kbytes, -l) 6...

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP and SMP guest support (NEW!) * dynamic ticks (NEW!) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes (non-PAE may be broken at the moment) * xen hvc console

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

This patch series implements the Linux Xen guest in terms of the paravirt-ops interface. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen console * virtual block

Hi Andi, This patch series implements the Linux Xen guest as a paravirt_ops backend. The features in implemented this patch series are: * domU only * UP only (most code is SMP-safe, but there's no way to create a new vcpu) * writable pagetables, with late pinning/early unpinning (no shadow pagetable support) * supports both PAE and non-PAE modes * xen hvc console (console=hvc0) *