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Don't refer to user memory access as "copying". Some of the students
author
Ben Pfaff
<blp@cs.stanford.edu>
Tue, 16 May 2006 16:08:39 +0000
(16:08 +0000)
committer
Ben Pfaff
<blp@cs.stanford.edu>
Tue, 16 May 2006 16:08:39 +0000
(16:08 +0000)
don't see it that way.
doc/userprog.tmpl
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diff --git
a/doc/userprog.tmpl
b/doc/userprog.tmpl
index 07183dbefbacd4d2aae0a76842605510af06ea6a..a8b4269e9c5c1de6025b289a91afd490c3ea3cbd 100644
(file)
--- a/
doc/userprog.tmpl
+++ b/
doc/userprog.tmpl
@@
-59,8
+59,7
@@
FirstName LastName <email@domain.example>
---- ALGORITHMS ----
---- ALGORITHMS ----
->> Describe your code for copying data from user programs into the kernel
->> and vice versa.
+>> Describe your code for reading and writing user data from the kernel.
>> Suppose a system call causes a full page (4,096 bytes) of data to be
>> copied from user space into the kernel. What is the least and the
>> Suppose a system call causes a full page (4,096 bytes) of data to be
>> copied from user space into the kernel. What is the least and the
@@
-100,8
+99,8
@@
FirstName LastName <email@domain.example>
---- RATIONALE ----
---- RATIONALE ----
->> Why did you choose to implement
user-to-kernel copying the way you
->> did?
+>> Why did you choose to implement
access to user memory from the
+>>
kernel in the way that you
did?
>> What advantages or disadvantages can you see to your design for file
>> descriptors?
>> What advantages or disadvantages can you see to your design for file
>> descriptors?