From: Laura Abbott <labbott@redhat.com>
To: Mark Rutland <mark.rutland@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Will Deacon <will.deacon@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>
Cc: Laura Abbott <labbott@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andrew Morton <akpm@linux-foundation.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCHv2 0/6] CONFIG_DEBUG_VIRTUAL for arm64
Date: Wed, 2 Nov 2016 15:00:48 -0600 [thread overview]
Message-ID: <20161102210054.16621-1-labbott@redhat.com> (raw)
Hi,
This is v2 of the series to add CONFIG_DEBUG_VIRTUAL support from arm64. This
has been split out into a number of patches:
Patch #1 Adds ARCH_HAS_DEBUG_VIRTUAL to avoid the need for adding arch
dependencies for DEBUG_VIRTUAL. This touches arch/x86/Kconfig
Patch #2 Cleans up cma to not rely on __pa_nodebug and have an #ifdef inline
in the function.
Patch #3 Adjust some macros in arm64 memory.h to be under __ASSEMBLY__
protection
Patch #4 Adds a cast for virt_to_pfn since __virt_to_phys for DEBUG_VIRTUAL no
longer has a cast.
Patch #5 Switches to using __pa_symbol for _end to avoid erroneously triggering
a bounds error with the debugging.
Patch #6 is the actual implementation of DEBUG_VIRTUAL. The biggest change from
the RFCv1 is the addition of __phys_addr_symbol. This is to handle several
places where the physical address of _end is needed. x86 avoids this problem by
doing its bounds check based on the entire possible image space which is well
beyond where _end would end up.
There are a few dependencies outside of arm64, so I don't know if
it will be easier for this to eventually go through arm64 or the mm tree.
Thanks,
Laura
Laura Abbott (6):
lib/Kconfig.debug: Add ARCH_HAS_DEBUG_VIRTUAL
mm/cma: Cleanup highmem check
arm64: Move some macros under #ifndef __ASSEMBLY__
arm64: Add cast for virt_to_pfn
arm64: Use __pa_symbol for _end
arm64: Add support for CONFIG_DEBUG_VIRTUAL
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/memory.h | 50 ++++++++++++++++++++++++-----------------
arch/arm64/mm/Makefile | 2 ++
arch/arm64/mm/init.c | 4 ++--
arch/arm64/mm/physaddr.c | 34 ++++++++++++++++++++++++++++
arch/x86/Kconfig | 1 +
lib/Kconfig.debug | 5 ++++-
mm/cma.c | 15 +++++--------
8 files changed, 79 insertions(+), 33 deletions(-)
create mode 100644 arch/arm64/mm/physaddr.c
--
2.10.1
next reply other threads:[~2016-11-02 21:01 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-02 21:00 Laura Abbott [this message]
2016-11-02 21:00 ` [PATCHv2 1/6] lib/Kconfig.debug: Add ARCH_HAS_DEBUG_VIRTUAL Laura Abbott
2016-11-02 21:00 ` [PATCHv2 2/6] mm/cma: Cleanup highmem check Laura Abbott
2016-11-02 21:00 ` [PATCHv2 3/6] arm64: Move some macros under #ifndef __ASSEMBLY__ Laura Abbott
2016-11-02 21:00 ` [PATCHv2 4/6] arm64: Add cast for virt_to_pfn Laura Abbott
2016-11-02 21:00 ` [PATCHv2 5/6] arm64: Use __pa_symbol for _end Laura Abbott
2016-11-02 22:52 ` Mark Rutland
2016-11-02 23:56 ` Laura Abbott
2016-11-03 15:51 ` Mark Rutland
2016-11-14 18:19 ` Catalin Marinas
2016-11-14 18:41 ` Laura Abbott
2016-11-15 18:35 ` Catalin Marinas
2016-11-16 0:09 ` Laura Abbott
2016-11-16 17:32 ` Catalin Marinas
2016-11-18 10:23 ` Ard Biesheuvel
2016-11-02 21:00 ` [PATCHv2 6/6] arm64: Add support for CONFIG_DEBUG_VIRTUAL Laura Abbott
2016-11-02 23:06 ` Mark Rutland
2016-11-03 0:05 ` Laura Abbott
2016-11-03 15:57 ` Mark Rutland
2016-11-02 23:07 ` [PATCHv2 0/6] CONFIG_DEBUG_VIRTUAL for arm64 Mark Rutland
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