| Message ID | 1512467614-38194-1-git-send-email-vladimir.murzin@arm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 05/12/17 09:53, Vladimir Murzin wrote: > While running MPS2 platform (NOMMU) with DTB placed below PHYS_OFFSET > following warning poped up: > > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 0 at arch/arm/mm/physaddr.c:42 __virt_to_phys+0x2f/0x40 > virt_to_phys used for non-linear address: 00004000 (0x4000) > CPU: 0 PID: 0 Comm: swapper Not tainted 4.15.0-rc1-5a31bf2-clean+ #2767 > Hardware name: MPS2 (Device Tree Support) > [<2100bf39>] (unwind_backtrace) from [<2100b3ff>] (show_stack+0xb/0xc) > [<2100b3ff>] (show_stack) from [<2100e697>] (__warn+0x87/0xac) > [<2100e697>] (__warn) from [<2100e6db>] (warn_slowpath_fmt+0x1f/0x28) > [<2100e6db>] (warn_slowpath_fmt) from [<2100c603>] (__virt_to_phys+0x2f/0x40) > [<2100c603>] (__virt_to_phys) from [<2116a499>] (early_init_fdt_reserve_self+0xd/0x24) > [<2116a499>] (early_init_fdt_reserve_self) from [<2116222d>] (arm_memblock_init+0xb5/0xf8) > [<2116222d>] (arm_memblock_init) from [<21161cad>] (setup_arch+0x38b/0x50e) > [<21161cad>] (setup_arch) from [<21160455>] (start_kernel+0x31/0x280) > [<21160455>] (start_kernel) from [<00000000>] ( (null)) > random: get_random_bytes called from init_oops_id+0x17/0x2c with crng_init=0 > ---[ end trace 0000000000000000 ]--- > > Platforms without MMU support run with 1:1 (i.e. linear) memory > mapping, so disable CONFIG_DEBUG_VIRTUAL. > > Fixes: e377cd8221eb ("ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL") > Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> > --- > KernelVersion: 4.15-rc1 > > arch/arm/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index 18c1e7d..6cd616b 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -4,7 +4,7 @@ config ARM > default y > select ARCH_CLOCKSOURCE_DATA > select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID > - select ARCH_HAS_DEBUG_VIRTUAL > + select ARCH_HAS_DEBUG_VIRTUAL if MMU > select ARCH_HAS_DEVMEM_IS_ALLOWED > select ARCH_HAS_ELF_RANDOMIZE > select ARCH_HAS_SET_MEMORY > Ok for patch tracker? Vladimir
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 18c1e7d..6cd616b 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -4,7 +4,7 @@ config ARM default y select ARCH_CLOCKSOURCE_DATA select ARCH_DISCARD_MEMBLOCK if !HAVE_ARCH_PFN_VALID - select ARCH_HAS_DEBUG_VIRTUAL + select ARCH_HAS_DEBUG_VIRTUAL if MMU select ARCH_HAS_DEVMEM_IS_ALLOWED select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_SET_MEMORY
While running MPS2 platform (NOMMU) with DTB placed below PHYS_OFFSET following warning poped up: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at arch/arm/mm/physaddr.c:42 __virt_to_phys+0x2f/0x40 virt_to_phys used for non-linear address: 00004000 (0x4000) CPU: 0 PID: 0 Comm: swapper Not tainted 4.15.0-rc1-5a31bf2-clean+ #2767 Hardware name: MPS2 (Device Tree Support) [<2100bf39>] (unwind_backtrace) from [<2100b3ff>] (show_stack+0xb/0xc) [<2100b3ff>] (show_stack) from [<2100e697>] (__warn+0x87/0xac) [<2100e697>] (__warn) from [<2100e6db>] (warn_slowpath_fmt+0x1f/0x28) [<2100e6db>] (warn_slowpath_fmt) from [<2100c603>] (__virt_to_phys+0x2f/0x40) [<2100c603>] (__virt_to_phys) from [<2116a499>] (early_init_fdt_reserve_self+0xd/0x24) [<2116a499>] (early_init_fdt_reserve_self) from [<2116222d>] (arm_memblock_init+0xb5/0xf8) [<2116222d>] (arm_memblock_init) from [<21161cad>] (setup_arch+0x38b/0x50e) [<21161cad>] (setup_arch) from [<21160455>] (start_kernel+0x31/0x280) [<21160455>] (start_kernel) from [<00000000>] ( (null)) random: get_random_bytes called from init_oops_id+0x17/0x2c with crng_init=0 ---[ end trace 0000000000000000 ]--- Platforms without MMU support run with 1:1 (i.e. linear) memory mapping, so disable CONFIG_DEBUG_VIRTUAL. Fixes: e377cd8221eb ("ARM: 8640/1: Add support for CONFIG_DEBUG_VIRTUAL") Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> --- KernelVersion: 4.15-rc1 arch/arm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)