[PATCHv7 04/11] kexec: Switch to __pa_symbol

[Laura Abbott]

__pa_symbol is the correct api to get the physical address of kernel
symbols. Switch to it to allow for better debug checking.

Reviewed-by: Mark Rutland <***@arm.com>
Tested-by: Mark Rutland <***@arm.com>
Acked-by: "Eric W. Biederman" <***@xmission.com>
Signed-off-by: Laura Abbott <***@redhat.com>
---
kernel/kexec_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 5617cc4..a01974e 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -1399,7 +1399,7 @@ void __weak arch_crash_save_vmcoreinfo(void)

phys_addr_t __weak paddr_vmcoreinfo_note(void)
{
- return __pa((unsigned long)(char *)&vmcoreinfo_note);
+ return __pa_symbol((unsigned long)(char *)&vmcoreinfo_note);
}

static int __init crash_save_vmcoreinfo_init(void)

[Will Deacon]

This is v7 of the patches to add CONFIG_DEBUG_VIRTUAL for arm64. This is
a simple reordering of patches from v6 per request of Will Deacon for ease
of merging support for arm which depends on this series.
lib/Kconfig.debug: Add ARCH_HAS_DEBUG_VIRTUAL
mm/cma: Cleanup highmem check
mm: Introduce lm_alias
kexec: Switch to __pa_symbol
mm/kasan: Switch to using __pa_symbol and lm_alias
mm/usercopy: Switch to using lm_alias
drivers: firmware: psci: Use __pa_symbol for kernel symbol
arm64: Move some macros under #ifndef __ASSEMBLY__
arm64: Add cast for virt_to_pfn
arm64: Use __pa_symbol for kernel symbols
arm64: Add support for CONFIG_DEBUG_VIRTUAL

I've pushed this into linux-next and, assuming it survives the
autobuilders etc I'll co-ordinate with Russell to get the common parts
pulled into the ARM tree too (so he can take Florian's series). They're
currently split out on the arm64 for-next/debug-virtual branch.

Thanks!

Will