linux-kernel - [PATCH 0/4] apply page shift to PFN instead of VA in pfn_to

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Message-Id: <20240131055159.2506-1-yan.y.zhao@intel.com>
Date: Wed, 31 Jan 2024 13:51:59 +0800
From: Yan Zhao <yan.y.zhao@...el.com>
To: arnd@...db.de,
	linus.walleij@...aro.org,
	guoren@...nel.org,
	bcain@...cinc.com,
	jonas@...thpole.se,
	stefan.kristiansson@...nalahti.fi,
	shorne@...il.com
Cc: linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-csky@...r.kernel.org,
	linux-hexagon@...r.kernel.org,
	linux-openrisc@...r.kernel.org,
	Yan Zhao <yan.y.zhao@...el.com>
Subject: [PATCH 0/4] apply page shift to PFN instead of VA in pfn_to_virt

This is a tiny fix to pfn_to_virt() for some platforms.

The original implementaion of pfn_to_virt() takes PFN instead of PA as the
input to macro __va, with PAGE_SHIFT applying to the converted VA, which
is not right under most conditions, especially when there's an offset in
__va.


Yan Zhao (4):
  asm-generic/page.h: apply page shift to PFN instead of VA in
    pfn_to_virt
  csky: apply page shift to PFN instead of VA in pfn_to_virt
  Hexagon: apply page shift to PFN instead of VA in pfn_to_virt
  openrisc: apply page shift to PFN instead of VA in pfn_to_virt

 arch/csky/include/asm/page.h     | 2 +-
 arch/hexagon/include/asm/page.h  | 2 +-
 arch/openrisc/include/asm/page.h | 2 +-
 include/asm-generic/page.h       | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)


base-commit: 41bccc98fb7931d63d03f326a746ac4d429c1dd3
-- 
2.17.1