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2019-09-20don't leak a file system block if the buf argument to write is invalidRobert Morris
and a usertest
2019-09-20yet another sbrk() bug fix, and usertestRobert Morris
2019-09-20don't panic if a program frees all its memory with sbrk().Robert Morris
if a program sbrk()'s to a non-page-boundary, don't free that page. corresponding usertests.
2019-09-20more incorrect cast to uintRobert Morris
2019-09-20fix a potential kernel crashRobert Morris
add a regression test for it
2019-09-20nitsRobert Morris
2019-09-17all of PTE_FLAGSRobert Morris
2019-09-12set architecture riscv:rv64 -- fix gdb trampoline disassembly, thanks jonathanRobert Morris
2019-09-10Support exit status for exit/waitFrans Kaashoek
One test case for returning a exit status Passes usertests, but haven't used it to simplify tests
2019-09-08Make the end variable be really at the end of bss, and delete + 4096 in ↵Frans Kaashoek
freerange()
2019-09-08thanks to Anthony CoulterRobert Morris
2019-09-03sfence.vma in trampoline as wellRobert Morris
2019-09-03fix sfence_vma commentRobert Morris
2019-09-03sfence_vma after satpRobert Morris
2019-08-23Add major/minor/mkdevFrans Kaashoek
Maybe apply this change to master
2019-08-20Also release buffer on failed copyoutFrans Kaashoek
2019-08-20Release buffer also when copyin failsFrans Kaashoek
2019-08-20512 -> BSIZEFrans Kaashoek
2019-08-19Merge remote-tracking branch 'origin/master' into riscvFrans Kaashoek
2019-08-19A few now unused DOCFrans Kaashoek
2019-08-19Merge remote-tracking branch 'origin/master' into riscvFrans Kaashoek
2019-08-18Cosmetic cleanup: fsinit reads sb and calls loginit. initialize icacheFrans Kaashoek
in main.c and don't make it disk specific; the icache is shared. This doesn't matter since we have only one disk, but conceptually cleaner and maybe helpful to students for mount lab.
2019-08-12Wrap state of disk driver in a struct so that it is easier to supportFrans Kaashoek
several disks (e.g., in a mount lab).
2019-08-02syscall lab nitsRobert Morris
2019-08-01Merge branch 'riscv-bcache' into riscvFrans Kaashoek
2019-08-01fences for startingRobert Morris
2019-07-30cut ramdiskRobert Morris
2019-07-30Track in buf if disk "owns" bufferFrans Kaashoek
2019-07-30Make pin/unpin explicitFrans Kaashoek
2019-07-30The driver should free descriptors, not interrupt handler. ThisFrans Kaashoek
avoids handler freeing descriptors before driver sees that the request has completed.
2019-07-29Remove B_DIRTYFrans Kaashoek
Use refcnt to pin blocks into the cache Replace flags/B_VALID with a boolean field valid Use info[id].status to signal completion of disk interrupt Pass a read/write flag to virtio_disk_rw
2019-07-28separate out timer init code for clarityRobert Morris
2019-07-28xxxRobert Morris
2019-07-28argptr no longer needed, since copyin checksRobert Morris
2019-07-27cleaner UART register interfaceRobert Morris
2019-07-27console/uart tweaksRobert Morris
2019-07-27beautify console.cRobert Morris
2019-07-27split printf into a separate file, to make console.c more like a driverRobert Morris
2019-07-26fetchint isn't used any moreRobert Morris
2019-07-26???Robert Morris
2019-07-26machinevec -> timervecRobert Morris
2019-07-26uservec before userret in trampoline, to match book and kernelvecRobert Morris
2019-07-26Merge branch 'riscv' of g.csail.mit.edu:xv6-dev into riscvRobert Morris
2019-07-26trampin -> uservecRobert Morris
trampout -> userret
2019-07-25a few name changes in panic msgFrans Kaashoek
2019-07-25fix an exit/exit deadlock -> one more locking protocol violationRobert Morris
increase timer rate from 1/second to 10/second
2019-07-25purge x86 stuff from defs.hRobert Morris
2019-07-25comments for timer setupRobert Morris
2019-07-24rationalize some vm function namesRobert Morris
2019-07-24???Robert Morris
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