Messages in this thread Patch in this message | | | Date | Thu, 21 Sep 2006 01:05:27 +0400 | From | Mitch <> | Subject | Re: UML build failure with 2.6.18 |
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Hi Jeff,
That works perfectly as did the previous patch. I knew how to fix the problem anyhow, just wanted to know why i/if was the only person having thr problem. I'm running glibc-2.3.6 and gcc-4.0.3.
Cheers Mithc
-------- Original Message -------- Subject: Re: UML build failure with 2.6.18 Date: Wed, 20 Sep 2006 13:40:26 -0400 From: Jeff Dike <jdike@addtoit.com> To: Mitch <Mitch@0Bits.COM> CC: linux-kernel@vger.kernel.org, "Bill Rugolsky Jr." <brugolsky@telemetry-investments.com> References: <45115EC7.2010407@0Bits.COM>
On Wed, Sep 20, 2006 at 07:31:19PM +0400, Mitch wrote: > It's no distro (built up myself, so you can assume a gentoo type build). > I'm building from scratch, so it should use no headers since i'm > building a kernel.
UML interacts with the host, by making system calls, so it needs the host's libc headers.
Try the patch below.
Jeff
Index: linux-2.6.17/arch/um/os-Linux/process.c =================================================================== --- linux-2.6.17.orig/arch/um/os-Linux/process.c 2006-09-20 11:15:08.000000000 -0400 +++ linux-2.6.17/arch/um/os-Linux/process.c 2006-09-20 13:35:24.000000000 -0400 @@ -140,11 +140,9 @@ void os_usr1_process(int pid) * syscalls, and also breaks with clone(), which does not unshare the TLS. */
-inline _syscall0(pid_t, getpid) - int os_getpid(void) { - return(getpid()); + return syscall(__NR_getpid); }
int os_getpgrp(void) Index: linux-2.6.17/arch/um/os-Linux/sys-i386/tls.c =================================================================== --- linux-2.6.17.orig/arch/um/os-Linux/sys-i386/tls.c 2006-06-18 13:49:35.000000000 -0400 +++ linux-2.6.17/arch/um/os-Linux/sys-i386/tls.c 2006-09-20 13:37:27.000000000 -0400 @@ -3,8 +3,6 @@ #include "sysdep/tls.h" #include "user_util.h"
-static _syscall1(int, get_thread_area, user_desc_t *, u_info); - /* Checks whether host supports TLS, and sets *tls_min according to the value * valid on the host. * i386 host have it == 6; x86_64 host have it == 12, for i386 emulation. */ @@ -17,7 +15,7 @@ void check_host_supports_tls(int *suppor user_desc_t info; info.entry_number = val[i];
- if (get_thread_area(&info) == 0) { + if(syscall(__NR_get_thread_area, &info) == 0){ *tls_min = val[i]; *supports_tls = 1; return; Index: linux-2.6.17/arch/um/os-Linux/tls.c =================================================================== --- linux-2.6.17.orig/arch/um/os-Linux/tls.c 2006-08-15 21:59:56.000000000 -0400 +++ linux-2.6.17/arch/um/os-Linux/tls.c 2006-09-20 13:37:14.000000000 -0400 @@ -48,14 +48,11 @@ int os_get_thread_area(user_desc_t *info #ifdef UML_CONFIG_MODE_TT #include "linux/unistd.h"
-static _syscall1(int, get_thread_area, user_desc_t *, u_info); -static _syscall1(int, set_thread_area, user_desc_t *, u_info); - int do_set_thread_area_tt(user_desc_t *info) { int ret;
- ret = set_thread_area(info); + ret = syscall(__NR_set_thread_area, info); if (ret < 0) { ret = -errno; } @@ -66,7 +63,7 @@ int do_get_thread_area_tt(user_desc_t *i { int ret;
- ret = get_thread_area(info); + ret = syscall(__NR_get_thread_area, info); if (ret < 0) { ret = -errno; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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