As discussed in
https://bugzilla.suse.com/show_bug.cgi?id=1059674
the reason for multiple objtool warnings is the fact that vmmon module
defines its own Panic() function which never returns. While it is marked as
such which is used by the compiler for optimization, there is no way to
find this from object file.
While this seems innocuous, it might result in problems with unwinder
later. The quickest way around is to replace vmmon's own Panic() with
standard kernel panic() until a cleaner solution is found.
The CR3_PCID_MASK is defined in mainline asm/processor-flags.h since
commit 6c690ee1039b ("x86/mm: Split read_cr3() into read_cr3_pa() and
__read_cr3()") in v4.13-rc1.
The MSR_MISC_FEATURES_ENABLES macro is defined in mainline since commit
ab6d9468631a ("x86/msr: Rename MISC_FEATURE_ENABLES to
MISC_FEATURES_ENABLES") in v4.12-rc1.
The MSR_MISC_FEATURES_ENABLES_CPUID_FAULT macro is defined in mainline
since commit e9ea1e7f53b8 ("x86/arch_prctl: Add ARCH_[GET|SET]_CPUID") in
v4.12-rc1.
When building against kernel 4.12 and newer, macro name GDT_SIZE used in
(vmmon) include/segs.h collides with macro defined in (kernel source)
arch/x86/include/asm/segment.h, resulting in its redefinition.
To prevent potential problems, rename vmmon's GDT_SIZE to VMMON_GDT_SIZE
and GDT_LIMIT to VMMON_GDT_LIMIT. (There is no GDT_LIMIT in mainline kernel
source but let's be consistent.)
The PCI_VENDOR_ID_VMWARE macro is defined in mainline pci_ids.h since
commit 94e57fea6202 ("PCI: Move PCI_VENDOR_ID_VMWARE to pci_ids.h")
in v3.18-rc1.
If VMX86_DEVEL macro is not defined, preprocessor warns when it is tested
with "#if" in vmmon-only/linux/driver.c. As VMX86_DEVEL is tested with
"#ifdef" everywhere else, change this one test to match the rest.
Makefiles in *-only copy the object file module is created from into the
parent directory but do not delete them on "make clean". Clean these files
up in "clean" target of top level makefile.
Add a top level makefile to make common tasks easier. Supported targets:
make - build modules
make install - install modules (honors DESTDIR)
make clean - clean up
make tarballs - create source tarballs from current HEAD
Note: "make tarballs" uses "git archive" so that it only works in a local
copy of the git repository, not in a directory created by unpacking
a tarball.
Add *.tar to .gitignore to hide tarballs created by "make tarballs".
Michal Kubecek