Thread (14 messages) flat view 14 messages, 3 authors, 2012-07-22
STALE5173d

[PATCH] ARM: mm: avoid attempting to flush the gate_vma with VIVT caches

From: Gilles Chanteperdrix <hidden>
Date: 2012-07-21 13:18:35

On 07/20/2012 10:41 PM, Gilles Chanteperdrix wrote:
Being 0 or 1 whether we want to flush the vector page (I believe we do
not want to flush it, but am not sure).
Actually, I believe we want to flush the vector page, at least on
systems with VIVT cache: on systems with VIVT cache, the vector page is
writeable in kernel mode, so may have been modified, and the address
used by elf_core_dump is not the vectors address, but the address in the
kernel direct-mapped RAM region where the vector page was allocated, so
there is a cache aliasing issue.

-- 
                                                                Gilles.
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