summaryrefslogtreecommitdiff
AgeCommit message (Collapse)AuthorFilesLines
2016-08-12separate atomic test-and-set from memory barrier.Robert Morris1-12/+14
* use xchg only for its atomicness. * use __sync_synchronize() for both CPU and compiler barrier.
2016-08-11nothing muchRobert Morris3-2/+3
2016-08-11main commentsRobert Morris1-7/+6
2016-08-10nitsRobert Morris2-2/+2
2016-08-10more comments in entryother.SRobert Morris2-15/+22
2016-08-10even more explicit that entry.S is linked into kernel, unlike bootasm.S.Robert Morris2-1/+5
2016-08-10tiny clarifications to some gdt code.Robert Morris3-5/+5
2016-08-08shell nitsRobert Morris2-4/+8
fix Regehr complaint
2015-11-15nitsFrans Kaashoek1-8/+6
2015-11-15Remove console input.lockNathaniel Wesley Filardo1-10/+13
Use cons.lock for everything. This eliminates the possibility that two CPUS independently, simultaneously manipulate the CRTC in cgaputc.
2015-11-15Add sanity check panic for CRTC interactionsNathaniel Wesley Filardo1-0/+3
2015-11-15Merge pull request #3 from beordle/masterkaashoek1-1/+1
Fix comments
2015-11-15Merge pull request #5 from kehao95/masterkaashoek1-1/+1
Update URL for 2014
2015-11-14Update URL for 2014kehao951-1/+1
2015-09-18Fix commentsJindong Zhang1-1/+1
2015-08-12Fixed broken build on Arch LinuxAyan Shafqat1-0/+2
2015-06-30coding style (per Jeremías Feltan <[email protected]>)Frans Kaashoek2-7/+7
2015-06-27Update memide to reflect recent changes to fs and bufFrans Kaashoek1-2/+3
2015-06-27Pick up where i left off in april:Frans Kaashoek7-45/+47
- move log into metadata part of disk, so that marking that the log's blocks are in use falls out for free - superblock describes the whole disk (sizes and offets) - sizes and offsets are computed in one place (mkfs) and the rest of the code refers to the superblock for these values, instead of recomputing them.
2015-04-10One ide command for nsector_per_block generates nsector_per_block interrupts,Frans Kaashoek1-1/+1
instead of 1. ideintr() should wait for nsector_per_block interrupts before waking up the reader; now it wakes up the reader after 1 interrupt, which apparently means that the first sector is available of the command instead of all. For now keep BSIZE to 512.
2015-04-10check blockno passed to idestartFrans Kaashoek3-9/+9
2015-04-03Disentangle block size from the disk's sector size. Set block size to 1024 ↵Frans Kaashoek11-86/+91
to show that they can be different. Clean up mkfs, simplifying specifying fs parameters, remove some redundancy between fs and mkfs, and fix disk layout bugs. Call blocks in the file system blocks instead of sectors. Passes usertests for different block sizes.
2015-03-24Fix missing NUL-terminator in grepAustin Clements1-1/+2
Currently, grep read()s into a buffer and then uses the buffer as a string. Since there's no NUL-terminator, this can cause it to falsely identify line breaks and matches from leftover data on earlier lines and, if a line fills up the entire buffer, to read past the end of the buffer. Fix this by NUL-terminating any data returned by read(). Thanks to Keiichi Watanabe for the report.
2015-02-19fix buf where concurrent fs syscalls race on log entriesCody Cutler1-0/+2
2014-10-03Increase VM memory when running qemu-memfsAustin Clements1-1/+1
Presumably because of the pre-loaded file system, the default RAM is insufficient when running kernelmemfs
2014-10-03Make kernelmemfs depend on kernel.ldAustin Clements1-1/+1
2014-10-03Fix kernelmemfs linkingAustin Clements1-1/+1
Commit 9aa0337d introduced a linker script for linking the kernel image, but only changed the kernel target to use it. kernelmemfs was still using the old linker command line arguments, which weren't sufficient.
2014-09-23ggdb -> gdwarf-2 for gcc4.8Frans Kaashoek1-1/+1
2014-09-12whoops. forgot date.hCody Cutler1-0/+8
2014-09-12cmosgetdate() for system-call homeworkCody Cutler4-3/+72
the day of reckoning has come for the debug port "Shutdown" hack. instead of mucking with ACPI or using a new hack, the student will now write sys_date() using the cmosgetdate() helper.
2014-09-08Oops (thanks David Lawrence)Frans Kaashoek1-1/+1
2014-08-29no need to generate postscript versionFrans Kaashoek1-2/+2
2014-08-29Nice layout for a printout of the codeFrans Kaashoek7-5/+20
2014-08-29Ack all bug reports and patches. Is this all of them?Frans Kaashoek1-2/+4
2014-08-28update for 2014Frans Kaashoek1-6/+3
2014-08-28xxRobert Morris2-2/+2
2014-08-28Merge branch 'master' of git+ssh://amsterdam.csail.mit.edu/home/am0/6.828/xv6Robert Morris10-163/+215
2014-08-28write log blocks from cache only at end of transactionRobert Morris1-7/+21
2014-08-28nitsRobert Morris1-24/+10
2014-08-28i think this is a working concurrent logging schemeRobert Morris5-95/+113
2014-08-27a start at concurrent FS system callsRobert Morris6-61/+95
2014-08-27commentsRobert Morris2-2/+2
2014-08-04every iput() and namei() must be inside a transactionRobert Morris6-17/+145
2014-08-04use acquire/release to force order for pid=np->pid;np->state=RUNNINGRobert Morris3-11/+19
for bug reported by [email protected] and [email protected]
2014-07-31newer versions of qemu have different binary names (per Joel Nider ↵Frans Kaashoek1-2/+4
<[email protected]>)
2013-03-04Correct a security bug in copyuvm()Stephen Tu2-2/+4
copyuvm() should not allow new copied pages to inherit more permissions than the original pages.
2012-10-24Prevent extra rebuild of fs.img by keeping intermediate object files.Cam Tenny1-0/+6
2012-09-10Use static assert instead of _LP64 (thanks Eddie!)Frans Kaashoek1-3/+4
2012-09-07Remove -m32 flag from native gcc compilerFrans Kaashoek2-1/+5
But check that mkfs.c is building with LP64
2012-08-28make the book happyRobert Morris1-2/+2
Powered by cgit, Theme cgit-dark created by Ted Yin, updated by Mole Shang.