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6 Commits
Author SHA1 Message Date
Jamie LiuandgVisor bot b01944883b Add memmap.File.MemoryType() 
This has no effect (outside of debug logging) until cl/723723715.

Updates #11436

PiperOrigin-RevId: 736686635
 2025-03-13 17:08:52 -07:00
Jamie LiuandgVisor bot fc75579112 Add some hostarch.Addr methods. 
PiperOrigin-RevId: 582093671
 2023-11-13 14:59:30 -08:00
Adin ScannellandgVisor bot 1ceb814544 Add default_applicable_licenses rules to packages. 
PiperOrigin-RevId: 513581243
 2023-03-02 10:50:04 -08:00
Jamie LiuandgVisor bot 0721ca2fe3 Make hostarch.Page/HugePage/CacheLine* functions generic and canonical. 
Also add the missing HugePage equivalents of Page functions.

The fix for golang/go#56280, which first appears in Go 1.20, is needed to
prevent this CL from regressing performance:

Before fix:
```
TEXT gvisor/pkg/sentry/mm/mm.(*MemoryManager).SetNumaPolicy(SB) gvisor/pkg/sentry/mm/syscalls.go
  ...
  addr.go:75            0x7f000054e35e          488d053bc2b100          LEAQ gvisor/pkg/hostarch/hostarch..dict.IsPageAligned[gvisor/pkg/hostarch/hostarch.Addr](SB), AX
  addr.go:75            0x7f000054e365          e8961cc4ff              CALL gvisor/pkg/hostarch/hostarch.IsPageAligned[go.shape.uintptr](SB)
```

After fix:
```
TEXT gvisor/pkg/sentry/mm/mm.(*MemoryManager).SetNumaPolicy(SB) gvisor/pkg/sentry/mm/syscalls.go
  ...
  addr.go:75            0x7f00004da61a          90                      NOPL
  addr.go:75            0x7f00004da61b          0f1f440000              NOPL 0(AX)(AX*1)
  sizes_util.go:57      0x7f00004da620          48f7c3ff0f0000          TESTQ $0xfff, BX
  syscalls.go:1021      0x7f00004da627          0f855f010000            JNE 0x7f00004da78c
```

PiperOrigin-RevId: 507608080
 2023-02-06 16:09:19 -08:00
Sergey MadaminovandgVisor bot 05e7c2fceb mmap() implementation for the IO_URING. 
Once the user receives a file descriptor from `io_uring_setup()`, it will be
used for the subsequent `mmap()` calls. Thus, we need to add support for it in
our iouringfs.

PiperOrigin-RevId: 477318038
 2022-09-27 17:44:25 -07:00
Zach KoopmansandgVisor bot 8a2f7e716d [syserror] Split usermem package 
Split usermem package to help remove syserror dependency in go_marshal.
New hostarch package contains code not dependent on syserror.

PiperOrigin-RevId: 365651233
 2021-03-29 13:30:21 -07:00