HelenOS
HelenOS-doc
HelenOS-historic
Català-Valencià – Catalan
中文 – Chinese (Simplified)
中文 – Chinese (Traditional)
Česky – Czech
Dansk – Danish
Nederlands – Dutch
English – English
Suomi – Finnish
Français – French
Deutsch – German
עברית – Hebrew
हिंदी – Hindi
Magyar – Hungarian
Bahasa Indonesia – Indonesian
Italiano – Italian
日本語 – Japanese
한국어 – Korean
Македонски – Macedonian
मराठी – Marathi
Norsk – Norwegian
Polski – Polish
Português – Portuguese
Português – Portuguese (Brazil)
Русский – Russian
Slovenčina – Slovak
Slovenščina – Slovenian
Español – Spanish
Svenska – Swedish
Türkçe – Turkish
Українська – Ukrainian
Oëzbekcha – Uzbek
Subversion Repositories
HelenOS
(root)
/
trunk
/
kernel
/
arch
/
sparc64
/
src
/
mm
/
cache.c
@ 2140
– Rev 0
Rev
Show changed files
|
Details
|
Compare with Previous
|
Blame
|
RSS feed
Filtering Options
From rev
To rev
Max revs
Search history for
Show All
Rev
Age
Author
Path
Log message
Diff
2134
6268 d 18 h
jermar
/trunk/kernel/
Reworked handling of illegal virtual aliases caused by frame reuse.
We moved the incomplete handling from backend's frame method to
backend's page_fault method. The page_fault method is the one that
can create an illegal alias if it writes the userspace frame using
kernel address with a different page color than the page to which is
this frame mapped in userspace. When we detect this, we do D-cache
shootdown on all processors (!!!).
If we add code that accesses userspace memory from kernel address
space, we will have to check for illegal virtual aliases at all such
places.
I tested this on a 4-way simulated E6500 and a real-world Ultra 5,
which has unfortunatelly only one processor.
This solves ticket #26.
2071
6336 d 17 h
jermar
/trunk/
(c) versus (C)
2015
6375 d 17 h
jermar
/trunk/
Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.
Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.
Lots of coding style changes.
2009
6380 d 16 h
jermar
/trunk/kernel/
Initial support for handling illegal virtual aliases on sparc64.