The patch titled uml: host TLS diagnostics has been removed from the -mm tree. Its filename was uml-host-tls-diagnostics.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: uml: host TLS diagnostics From: Jeff Dike <jdike@xxxxxxxxxxx> Add some diagnostics when TLS operations on the host fail. Also spit out more information about the TLS environment on the host at boot time. Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/um/sys-i386/tls.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) diff -puN arch/um/sys-i386/tls.c~uml-host-tls-diagnostics arch/um/sys-i386/tls.c --- a/arch/um/sys-i386/tls.c~uml-host-tls-diagnostics +++ a/arch/um/sys-i386/tls.c @@ -26,6 +26,11 @@ int do_set_thread_area(struct user_desc cpu = get_cpu(); ret = os_set_thread_area(info, userspace_pid[cpu]); put_cpu(); + + if (ret) + printk(KERN_ERR "PTRACE_SET_THREAD_AREA failed, err = %d, " + "index = %d\n", ret, info->entry_number); + return ret; } @@ -37,6 +42,11 @@ int do_get_thread_area(struct user_desc cpu = get_cpu(); ret = os_get_thread_area(info, userspace_pid[cpu]); put_cpu(); + + if (ret) + printk(KERN_ERR "PTRACE_GET_THREAD_AREA failed, err = %d, " + "index = %d\n", ret, info->entry_number); + return ret; } @@ -356,10 +366,9 @@ out: return ret; } - /* - * XXX: This part is probably common to i386 and x86-64. Don't create a common - * file for now, do that when implementing x86-64 support. + * This code is really i386-only, but it detects and logs x86_64 GDT indexes + * if a 32-bit UML is running on a 64-bit host. */ static int __init __setup_host_supports_tls(void) { @@ -368,13 +377,16 @@ static int __init __setup_host_supports_ printk(KERN_INFO "Host TLS support detected\n"); printk(KERN_INFO "Detected host type: "); switch (host_gdt_entry_tls_min) { - case GDT_ENTRY_TLS_MIN_I386: - printk("i386\n"); - break; - case GDT_ENTRY_TLS_MIN_X86_64: - printk("x86_64\n"); - break; + case GDT_ENTRY_TLS_MIN_I386: + printk(KERN_CONT "i386"); + break; + case GDT_ENTRY_TLS_MIN_X86_64: + printk(KERN_CONT "x86_64"); + break; } + printk(KERN_CONT " (GDT indexes %d to %d)\n", + host_gdt_entry_tls_min, + host_gdt_entry_tls_min + GDT_ENTRY_TLS_ENTRIES); } else printk(KERN_ERR " Host TLS support NOT detected! " "TLS support inside UML will not work\n"); _ Patches currently in -mm which might be from jdike@xxxxxxxxxxx are origin.patch git-kvm.patch fix-__const_udelay-declaration-and-definition-mismatches.patch iget-stop-hostfs-from-using-iget-and-read_inode.patch iget-stop-hostfs-from-using-iget-and-read_inode-checkpatch-fixes.patch aout-suppress-aout-library-support-if-config_arch_supports_aout-uml-re-remove-accidentally-restored-code.patch random-add-async-notification-support-to-dev-random.patch mount-options-fix-hostfs.patch - To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html