Category Archives: kernel

Kernel – GCC8 / ‘Objtool Warnings’ Patches..

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There are now patches available to deal with the host of ‘objtool‘ warnings when compiling the kernel with GCC8: …………………………….. drivers/video/fbdev/core/fbmem.o: warning: objtool: fb_set_var()+0x209: sibling call from callable instruction with modified stack frame drivers/video/fbdev/core/fbmem.o: warning: objtool: do_remove_conflicting_framebuffers()+0xa6: sibling call from callable instruction with modified stack frame drivers/video/fbdev/core/fbmem.o: warning: objtool: register_framebuffer()+0x14b: sibling call from callable instruction with modified … Continue reading →

GCC – Update to 8.1.1 – Still Gives Kernel Compile Warnings..

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Fedora 28 has GCC 8.1.1 available (currently in ‘updates-testing‘ repo), and I tested this with Kernel 4.17-rc4, to see if there was any improvement in the horde of warnings generated with 8.0.1. In short, there is no real difference: ……………………………… CC security/keys/request_key.o arch/x86/kvm/lapic.o: warning: objtool: kvm_lapic_reg_read()+0x126: sibling call from callable instruction with modified stack frame arch/x86/kvm/lapic.o: warning: … Continue reading →

Fedora – F28 GCC 8 Now OK with Kernel 4.16.7, and fix for Grub-Customizer..

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Tried Kernel 4.16.7 on Fedora 28 (GCC 8.0.1), and this now compiles successfully, although still with a lot of ‘warnings’.. I use grub-customizer with each new kernel, and the F28 version of this fails: # grub-customizer Error creating proxy: The connection is closed (g-io-error-quark, 18) *** initializing (w/o specified bootloader type)… * reading partition info… /usr/include/c++/8/bits/basic_string.h:1048: std::__cxx11::basic_string<_CharT, … Continue reading →

Fedora – 28 Released, but Fails with GCC 8 and Kernel 4.16…

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Fedora 28 has been released, but this includes GCC 8 (8.0.1) which – currently – is not capable of compiling Kernel 4.16 as-is (tested with 4.16.6): ……………………………. CC /usr/src/linux-4.16.6/tools/objtool/objtool.o CC /usr/src/linux-4.16.6/tools/objtool/libstring.o CC /usr/src/linux-4.16.6/tools/objtool/str_error_r.o ../lib/str_error_r.c: In function ‘str_error_r’: ../lib/str_error_r.c:25:3: error: passing argument 1 to restrict-qualified parameter aliases with argument 5 [-Werror=restrict] snprintf(buf, buflen, “INTERNAL ERROR: strerror_r(%d, %p, %zd)=%d”, … Continue reading →

Kernel – 4.17-rc3 Released – Still OK with Latest NVIDIA and VMware..

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Kernel 4.17-rc3 is out, and brief details of changes from -rc2 are here:  http://lkml.iu.edu/hypermail/linux/kernel/1804.3/05507.html Tested with NVIDIA 396.18 and VMware 14.1.1 (vmmon and vmnet), and all still compile OK.. Robert Gadsdon.   April 29, 2018. … Continue reading →

IA64 – Updated to 4.17-rc1..

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Updated the IA64 system (HP RX2600) to 4.17-rc1, and the compile and install/boot was without incident..    The python-related warning with 4.16 was no longer present.. (see http://rglinuxtech.com/?p=2222 ). …………… [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Started Login Service. [ OK ] Reached target Multi-User System. [ … Continue reading →

Kernel – 4.17-rc1 Out – OK with Latest NVIDIA and VMware..

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Kernel 4.17-rc1 has been released, and brief details are here:  http://lkml.iu.edu/hypermail/linux/kernel/1804.1/06654.html With the latest code-on-git milestone reached, there is speculation that a version bump to 5.x might be a possibility – but not just yet! The latest NVIDIA driver (396.18) and VMware (14.1.1 – vmmon and vmnet) all compile OK.. Robert Gadsdon.   April 15, 2018 … Continue reading →

Kernel – 4.17-rc1 Out – OK with Latest NVIDIA and VMware..

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Kernel 4.17-rc1 has been released, and brief details are here:  http://lkml.iu.edu/hypermail/linux/kernel/1804.1/06654.html With the latest code-on-git milestone reached, there is speculation that a version bump to 5.x might be a possibility – but not just yet! The latest NVIDIA driver (396.18) and VMware (14.1.1 – vmmon and vmnet) all compile OK.. Robert Gadsdon.   April 15, 2018 … Continue reading →

NVIDIA – Finally, a 4.16-Compatible Driver..

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NVIDIA has released beta driver 396.18, and – at last – this is compatible with Kernel 4.16 (tested with 4.16.1). Details are here:  http://www.nvidia.com/Download/driverResults.aspx/133571/en-us     The ‘Release Highlights’ do not even mention kernel support.. …………………… Building modules, stage 2. MODPOST 4 modules CC /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-396.18/kernel/nvidia-drm.mod.o LD [M] /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-396.18/kernel/nvidia-drm.ko CC /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-396.18/kernel/nvidia-modeset.mod.o LD [M] /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-396.18/kernel/nvidia-modeset.ko CC /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-396.18/kernel/nvidia-uvm.mod.o LD [M] /home/rgadsdon/kernel/NVIDIA-Linux-x86_64-396.18/kernel/nvidia-uvm.ko CC … Continue reading →

Kernel – Interim Changes for 4.17 – OK So Far..

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Testing the changes submitted to date for Kernel 4.17-rc1, which is – of course – not due out just yet..   Kernel version obtained from https://github.com/torvalds/linux today – April 8. Latest VMware – 14.1.1 – vmnet/vmmon compile OK, and so does the latest NVIDIA – 390.48, with the 4.16 patch.. More changes to come, but all is good … Continue reading →