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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] VMX: fix vmx_{find,del}_msr() build
>>> On 16.07.18 at 18:56, <andrew.cooper3@xxxxxxxxxx> wrote: > On 16/07/18 17:46, Jan Beulich wrote: >> For a reason that I can't explain, it is only the shim build that fails >> for me with an older gcc due to the compiler not recognizing that >> apparently uninitialized variables aren't really uninitialized. > > The only thing that comes to mind is some differences in CFLAGS et al. > There is nothing in kconfig which would plausibly impact that code. Oh, right - looks like the shim build inherits the tool stack's CFLAGS, which specify -O0 in debug builds. Otoh I'm surprised the hypervisor builds at all with -O0, so I guess I'll have to look at that in some more detail, not the least because xen/Rules.mk uses += to insert its own -O<n>. In any event, comparing the two object files clearly suggests a difference in optimization level. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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