On 06/01/2020 16:21, Ritesh Raj Sarraf wrote:
Control: tag -1 +help
On Mon, 2020-01-06 at 10:38 +0100, Sjoerd Simons wrote:
On my sid system:
```
$ strings /usr/bin/linux.uml | grep port-helper
/usr/lib//uml/port-helper
```
So the path is still incorrect even with newer upstream kernels.
I spent some time today looking at the new build but I haven't been
able to ascertain why this isn't setting the correct path.
It is used in a "user" side file - xterm.c
None of these sees "CONFIG_" so it considers it undef-ed which defaults
to 32 bit.
You need to use some other way to figure out what is the build or to set
OS_LIB_PATH for this case.
```
$ strings `which linux.uml` | grep port-helper
/usr/lib/uml/port-helper
```
First, for context to the readers here, the port-helper binary is
shipped with uml-utilities package. This package, depending on the
architecture, installs the binary to a architecture specific location.
https://sources.debian.org/src/uml-utilities/20070815.2-1/Makefile/#L10
Which on an amd64 machine is: /usr/lib64/uml/port-helper
```
$ dpkg -S /usr/lib64/uml/port-helper
uml-utilities: /usr/lib64/uml/port-helper
```
The UML setup on my box always worked because long back, when I first
encountered this problem, I had created a symlink of the path to
/usr/lib/ too. And had completely forgotten about it. My apologies.
But that said, the current problem is with the UML binary built by the
kernel sources.
Problem is that, as mentioned above and other reports too on this bug
report thread, the path resolved at build time is always
"/usr/lib/uml/".
The build configuration and the code are all correct.
```
$ grep 64BIT .config
CONFIG_64BIT=y
CONFIG_64BIT_TIME=y
CONFIG_PHYS_ADDR_T_64BIT=y
CONFIG_ARCH_DMA_ADDR_T_64BIT=y
```
Snipped from: arch/um/include/shared/os.h
```
#ifdef CONFIG_64BIT
#define OS_LIB_PATH "/usr/lib64/"
#else
#define OS_LIB_PATH "/usr/lib/"
#endif
```
I also checked the generated include headers and they are correct for
the amd64 .config file.
```
linux-source-5.4/include/generated$ grep 64BIT autoconf.h
#define CONFIG_64BIT_TIME 1
#define CONFIG_PHYS_ADDR_T_64BIT 1
#define CONFIG_64BIT 1
#define CONFIG_ARCH_DMA_ADDR_T_64BIT 1
```
I'll keep looking as time permits but if anyone else has ideas on what
I may be doing wrong, please do mention.
Thanks,
Ritesh
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