Messages in this thread | | | Date | Tue, 29 Sep 2015 13:17:29 +0100 | From | Vladimir Murzin <> | Subject | Re: [PATCH 16/22] arm64/debug: Make use of the system wide safe value |
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On 16/09/15 15:21, Suzuki K. Poulose wrote: > From: "Suzuki K. Poulose" <suzuki.poulose@arm.com> > > Use the system wide value of ID_AA64DFR0 to make safer decisions > > Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com> > --- > arch/arm64/include/asm/hw_breakpoint.h | 14 ++------------ > arch/arm64/kernel/debug-monitors.c | 6 ++++-- > arch/arm64/kernel/hw_breakpoint.c | 19 ++++++++++++++++++- > 3 files changed, 24 insertions(+), 15 deletions(-) >
Looks like this patch introduces build-time regression if CONFIG_PERF_EVENTS is not set:
> arch/arm64/kvm/built-in.o: In function `kvm_arm_setup_debug': > /work/tools/linux/arch/arm64/kvm/debug.c:173: undefined reference to `get_num_brps' > /work/tools/linux/arch/arm64/kvm/debug.c:177: undefined reference to `get_num_wrps' > arch/arm64/kvm/built-in.o: In function `kvm_arm_clear_debug': > /work/tools/linux/arch/arm64/kvm/debug.c:208: undefined reference to `get_num_brps' > /work/tools/linux/arch/arm64/kvm/debug.c:212: undefined reference to `get_num_wrps' > arch/arm64/kvm/built-in.o: In function `kvm_arch_dev_ioctl_check_extension': > /work/tools/linux/arch/arm64/kvm/reset.c:78: undefined reference to `get_num_wrps' > /work/tools/linux/arch/arm64/kvm/reset.c:75: undefined reference to `get_num_brps' > make: *** [vmlinux] Error 1
Vladimir
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