Re: [PATCH v4 0/4] KVM: arm64: BUG FIX: Correctly handle zero register transfers

[Andrew Jones <drjones@redhat.com>]

On Mon, Dec 07, 2015 at 11:47:44AM +0300, Pavel Fedin wrote:
>  Hello!
> 
> > But, if Pavel doesn't
> > mind trying them out on his system, then it'd be good to know if they
> > reproduce there. I'd like to find out if it's a test case problem or
> > something else strange going on with environments.
> 
> Does not build, applied to master:
> --- cut ---
> aarch64-unknown-linux-gnu-gcc  -std=gnu99 -ffreestanding -Wextra -O2 -I lib -I lib/libfdt -g -MMD -MF arm/.xzr-test.d -Wall
> -fomit-frame-pointer  -fno-stack-protector     -c -o arm/xzr-test.o arm/xzr-test.c
> arm/xzr-test.c: In function 'check_xzr_sysreg':
> arm/xzr-test.c:13:2: warning: implicit declaration of function 'mmu_disable' [-Wimplicit-function-declaration]
>   mmu_disable(); /* Tell KVM to set HCR_TVM for this VCPU */
>   ^
> aarch64-unknown-linux-gnu-gcc  -std=gnu99 -ffreestanding -Wextra -O2 -I lib -I lib/libfdt -g -MMD -MF arm/.xzr-test.d -Wall
> -fomit-frame-pointer  -fno-stack-protector   -nostdlib -o arm/xzr-test.elf \
>         -Wl,-T,arm/flat.lds,--build-id=none,-Ttext=40080000 \
>         arm/xzr-test.o arm/cstart64.o lib/libcflat.a lib/libfdt/libfdt.a /usr/lib/gcc/aarch64-unknown-linux-gnu/4.9.0/libgcc.a
> lib/arm/libeabi.a
> arm/xzr-test.o: In function `check_xzr_sysreg':
> /cygdrive/d/Projects/kvm-unit-tests/arm/xzr-test.c:13: undefined reference to `mmu_disable'
> --- cut ---

Have you done a git pull of your kvm-unit-tests repo lately? The patch
that introduces mmu_disable was commit a few months ago or so. Other
than your repo just not having mmu_disable(), then I can't think of why
it compiles for me and not you. If you have done a recent git pull, then
maybe do a 'make distclean; ./configure; make'

Thanks,
drew

> 
> Kind regards,
> Pavel Fedin
> Expert Engineer
> Samsung Electronics Research center Russia
> 
> 
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