Compatibility with the ARM architecture #8396

RiccardoM · 2021-01-20T12:58:37Z

Description

This PR adds the compatibility with the ARM architecture, by casting math.MaxInt64, math.MaxUint32 and math.MaxUint64 to uint64, uint32 and uint64 respectively.

It also adds a series of tests to make sure that the build is successful on a list of common platforms (386, arm, arm64 and amd64).

The aim of this PR is to make the Cosmos SDK compatible with the ARM architecture. This is often used in single board computers like the Raspberry, which are often used by hobbyists to experiment with projects. By making the Cosmos SDK ARM-compatible, we could allow such people to get started with it by running a node on their Raspberry before moving to a safer environment.

Also, this might be particularly useful to all the Cosmos SDK-based projects that are currently running a testnet and would like to give their validators the opportunity to run a node in-house on the above-mentioned boards.

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Added relevant godoc comments.
Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
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This PR adds the compatibility with the ARM architecture, by casting math.MaxInt64, math.MaxUint32 and math.MaxUint64 to uint64, uint32 and uint64 respectively.

x/ibc/testing/chain.go

.github/workflows/test.yml

Co-authored-by: Alessio Treglia <[email protected]>

baseapp/options.go

store/rootmulti/store.go

x/ibc/applications/transfer/module.go

Co-authored-by: Alessio Treglia <[email protected]>

alessio · 2021-01-20T14:10:19Z

Why are you casting math.MaxInt64 to uint64 (unsigned)?

RiccardoM · 2021-01-20T14:12:05Z

Why are you casting math.MaxInt64 to uint64 (unsigned)?

Cause the left side of the comparison is an uint64, so I figured out that was the correct type to have. Also, since math.MaxInt64 < math.MaxUint64, I thought that conversion would never give any problem

alessio · 2021-01-20T14:38:25Z

since math.MaxInt64 < math.MaxUint64, I thought that conversion would never give any problem

You need to cast to ensure it won't ever be a problem. However, what exactly is the problem you're trying to solve here? Does the compiler emit warnings/errors when building for arm64? And if, so can you post the buildlog please?

RiccardoM · 2021-01-20T15:09:19Z

since math.MaxInt64 < math.MaxUint64, I thought that conversion would never give any problem

You need to cast to ensure it won't ever be a problem. However, what exactly is the problem you're trying to solve here? Does the compiler emit warnings/errors when building for arm64? And if, so can you post the buildlog please?

This is only the first error that raises. Once you solve that, you get similar ones for the rest of the cases I have fixed:

$ GOOS=linux GOARCH=arm LEDGER_ENABLED=false make build
make[1]: Entering directory '/sda1/Coding/Cosmos/Cosmos-SDK'
go build -mod=readonly -tags "netgo" -ldflags '-X github.com/cosmos/cosmos-sdk/version.Name=sim -X github.com/cosmos/cosmos-sdk/version.AppName=simd -X github.com/cosmos/cosmos-sdk/version.Version=goz-phase-1-1151-g3d2896a2e -X github.com/cosmos/cosmos-sdk/version.Commit=3d2896a2e43eeb8ad9d157ab12c13936a54cd906 -X "github.com/cosmos/cosmos-sdk/version.BuildTags=netgo," -w -s' -trimpath -o /sda1/Coding/Cosmos/Cosmos-SDK/build/ ./...
# github.com/cosmos/cosmos-sdk/store/rootmulti
store/rootmulti/store.go:716:4: constant 9223372036854775807 overflows int
make[1]: *** [Makefile:110: build] Error 2

store/rootmulti/store.go

x/ibc/applications/transfer/module.go

Co-authored-by: Alessio Treglia <[email protected]>

Makefile

codecov · 2021-01-27T09:16:36Z

Codecov Report

Merging #8396 (6decdaf) into master (fd04f41) will not change coverage.
The diff coverage is 75.00%.

@@           Coverage Diff           @@
##           master    #8396   +/-   ##
=======================================
  Coverage   61.47%   61.47%           
=======================================
  Files         630      630           
  Lines       36398    36398           
=======================================
  Hits        22377    22377           
  Misses      11671    11671           
  Partials     2350     2350

Impacted Files	Coverage Δ
store/rootmulti/store.go	`66.05% <0.00%> (ø)`
snapshots/store.go	`74.31% <100.00%> (ø)`
x/ibc/applications/transfer/module.go	`60.68% <100.00%> (ø)`
x/ibc/core/02-client/types/client.go	`72.22% <100.00%> (ø)`

.github/workflows/test.yml

…ilation

@RiccardoM

From: #8396 Thanks: @RiccardoM for the original patch.

odeke-em

Howdy @RiccardoM, thank you for this change! I have a question about what looks likes now an increase for height, which I believe would involve security changes and perhaps would first go through a design change; this change is related to casting but not changing limits of values; we also need a test to prevent such regressions.

odeke-em · 2021-01-27T21:42:01Z

store/rootmulti/store.go

@@ -711,9 +711,9 @@ func (rs *Store) Restore(
 	if height == 0 {
 		return sdkerrors.Wrap(sdkerrors.ErrLogic, "cannot restore snapshot at height 0")
 	}
-	if height > math.MaxInt64 {
+	if height > uint64(math.MaxUint64) {


Oh oh, now height can be more than math.MaxInt64 aka >9223372036854775808, up until (1<<64 - 1) aka 18446744073709551615. That seems like a breaking change that's not related to ARM compatibility. The error message doesn't even match this check, plus I don't think there was a test to prevent such a regression. Please advise or revert this check.

This was changed here by @alessio. I think he should be able to answer this better. The commit was b34e327

This should fix it #8466 - @odeke-em

See #8396 (comment)

See #8396 (comment) Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

From: #8396 #8466

store/multistore: revert a height limit increase from #8396 See #8396 (comment)

@RiccardoM

From: #8396 #8466 Thanks: @RiccardoM for the original patch.

See cosmos/cosmos-sdk#8396 (comment) Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Compatibility with the ARM architecture

72d9dc7

This PR adds the compatibility with the ARM architecture, by casting math.MaxInt64, math.MaxUint32 and math.MaxUint64 to uint64, uint32 and uint64 respectively.

RiccardoM requested review from aaronc, alessio and alexanderbez as code owners January 20, 2021 12:58

Trying to fix workflow

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Update x/ibc/testing/chain.go

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Co-authored-by: Alessio Treglia <[email protected]>

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RiccardoM and others added 3 commits January 20, 2021 15:09

Update store/rootmulti/store.go

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Co-authored-by: Alessio Treglia <[email protected]>

Update store/rootmulti/store.go

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Co-authored-by: Alessio Treglia <[email protected]>

Update x/ibc/applications/transfer/module.go

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Co-authored-by: Alessio Treglia <[email protected]>

Merge branch 'master' into arm-compilation

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Update store/rootmulti/store.go

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alessio and others added 4 commits January 20, 2021 16:29

Update x/ibc/applications/transfer/module.go

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Merge branch 'master' into arm-compilation

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Update .github/workflows/test.yml

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Co-authored-by: Alessio Treglia <[email protected]>

Update .github/workflows/test.yml

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Co-authored-by: Alessio Treglia <[email protected]>

alessio approved these changes Jan 25, 2021

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Update Makefile

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alessio requested review from fdymylja, jgimeno and sahith-narahari January 27, 2021 10:03

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Merge branch 'master' into arm-compilation

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RiccardoM added 2 commits January 27, 2021 11:49

Fixed CI

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Merge remote-tracking branch 'riccardo/arm-compilation' into arm-comp…

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alessio merged commit e2f510a into cosmos:master Jan 27, 2021

alessio pushed a commit that referenced this pull request Jan 27, 2021

Compatibility with the ARM architecture

6ad11b6

From: #8396 Thanks: @RiccardoM for the original patch.

alessio mentioned this pull request Jan 27, 2021

[backport/v0.41.x]: Compatibility with the ARM architecture #8450

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RiccardoM deleted the arm-compilation branch January 27, 2021 11:27

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alessio pushed a commit that referenced this pull request Jan 28, 2021

partially revert #8396

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See #8396 (comment)

alessio mentioned this pull request Jan 28, 2021

store/multistore: revert a height limit increase from #8396 #8466

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store/multistore: revert a height limit increase from #8396

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See #8396 (comment)

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store/multistore: revert a height limit increase from #8396 (#8466)

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See #8396 (comment) Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

alessio pushed a commit that referenced this pull request Feb 1, 2021

compatibility with ARM architectures

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From: #8396 #8466

clevinson mentioned this pull request Feb 10, 2021

v0.41.1 Tracking Issue #8564

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alessio pushed a commit that referenced this pull request Feb 17, 2021

From: #8466

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store/multistore: revert a height limit increase from #8396 See #8396 (comment)

alessio pushed a commit that referenced this pull request Feb 17, 2021

[backport/v0.41.x]: Compatibility with the ARM architecture (#8450)

d685701

From: #8396 #8466 Thanks: @RiccardoM for the original patch.

daeMOn63 pushed a commit to fetchai/cosmos-sdk that referenced this pull request Aug 19, 2021

store/multistore: revert a height limit increase from #8396 (#8466)

1315caf

See cosmos/cosmos-sdk#8396 (comment) Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

daeMOn63 pushed a commit to fetchai/cosmos-sdk that referenced this pull request Aug 20, 2021

store/multistore: revert a height limit increase from #8396 (#8466)

036a7ba

See cosmos/cosmos-sdk#8396 (comment) Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

daeMOn63 pushed a commit to fetchai/cosmos-sdk that referenced this pull request Mar 1, 2022

store/multistore: revert a height limit increase from #8396 (#8466)

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See cosmos/cosmos-sdk#8396 (comment) Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

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Compatibility with the ARM architecture #8396

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Compatibility with the ARM architecture #8396

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