UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.63 Safari/537.36
Platform: All

Steps to reproduce the problem:
This is to clean up aftermath of NMI patchset leading (potential) build break of chromeos-3.18 kernel tree.

The backdrop is in order to fix NMI hard lock issue (chrome-os-partner: 51198), I have to backport the fixes from upstream:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/?qt=range&q=db0865543739b3~17..db0865543739b3

So far at least one consequence found it breaks the kernel build when enabling KVM, refer to attached .config.gz

What is the expected behavior?
build pass of sys-kernel/chromeos-kernel-3_18

What went wrong?
Build break

All error/warnings (new ones prefixed by >>):

   In file included from include/trace/define_trace.h:90:0,
                    from arch/x86/kvm/mmutrace.h:333,
                    from arch/x86/kvm/mmu.c:147:
   arch/x86/kvm/./mmutrace.h: In function 'ftrace_raw_output_kvm_mmu_get_page':
>> arch/x86/kvm/./mmutrace.h:25:25: error: 'struct trace_seq' has no member named 'len'
     const u32 saved_len = p->len;     \
                            ^
   include/trace/ftrace.h:291:22: note: in definition of macro 'DECLARE_EVENT_CLASS'
     trace_seq_printf(s, print);     \
                         ^
>> include/trace/ftrace.h:37:9: note: in expansion of macro 'PARAMS'
            PARAMS(print));         \
            ^
>> arch/x86/kvm/./mmutrace.h:147:1: note: in expansion of macro 'TRACE_EVENT'
    TRACE_EVENT(
    ^
>> arch/x86/kvm/./mmutrace.h:162:2: note: in expansion of macro 'TP_printk'
     TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(),
     ^
>> arch/x86/kvm/./mmutrace.h:162:21: note: in expansion of macro 'KVM_MMU_PAGE_PRINTK'
     TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(),
                        ^
   arch/x86/kvm/./mmutrace.h: In function 'ftrace_raw_output_kvm_mmu_page_class':
>> arch/x86/kvm/./mmutrace.h:25:25: error: 'struct trace_seq' has no member named 'len'
     const u32 saved_len = p->len;     \
                            ^
   include/trace/ftrace.h:291:22: note: in definition of macro 'DECLARE_EVENT_CLASS'
     trace_seq_printf(s, print);     \
                         ^
   arch/x86/kvm/./mmutrace.h:179:2: note: in expansion of macro 'TP_printk'
     TP_printk("%s", KVM_MMU_PAGE_PRINTK())
     ^
   arch/x86/kvm/./mmutrace.h:179:18: note: in expansion of macro 'KVM_MMU_PAGE_PRINTK'
     TP_printk("%s", KVM_MMU_PAGE_PRINTK())
                     ^

Did this work before? N/A 

Chrome version: 49.0.2623.63  Channel: n/a
OS Version: chromeos-3.18
Flash Version: Shockwave Flash 21.0 r0
 

Deleted: .config.gz 20.9 KB

.config.gz 20.9 KB Download