breakpoint: implement hw breakpoint for arm64 platform

[time-river]

The same as commit 0b1b815, I implement the hardware breakpoint for arm64 platform :-)

I notice the following commit, therefore the feature can't be enabled:

        /*
         * Temporary workaround for Xen guests. Breakpoints degrade
         * performance linearly, so until we find out the reason,
         * let's disable them.
         */
        if (f == FI_NO_BREAKPOINTS)
                return true;

I don't know the reason here, and I don't have Xen environment. Besides the arm64 breakpoint, only x86 has this feature, therefore I only disable x86 by macro CONFIG_X86_64.

Note: the problem I met before is here #1811

NOTICE: DOING -- bug: Can't restore SIGTRAP signal (testcase zdtm/static/sigtrap01 failed)

[avagin]

@time-river what is the status of this PR? Is it ready for review?

[avagin]

@time-river could you rebase this pr?

[time-river]

@time-river could you rebase this pr?

[time-river]

@time-river could you rebase this pr?

no problem.

[codecov-commenter]

Codecov Report

Merging #1815 (e1605c4) into criu-dev (2b3763f) will increase coverage by 0.38%. The diff coverage is 28.57%.

@@             Coverage Diff              @@
##           criu-dev    #1815      +/-   ##
============================================
+ Coverage     69.20%   69.59%   +0.38%     
============================================
  Files           126      128       +2     
  Lines         33355    32234    -1121     
============================================
- Hits          23083    22432     -651     
+ Misses        10272     9802     -470     

Impacted Files	Coverage Δ
criu/arch/x86/include/asm/restorer.h	69.23% <ø> (ø)
criu/include/fault-injection.h	100.00% <ø> (ø)
criu/cr-restore.c	67.08% <16.66%> (+0.01%)	:arrow_up:
compel/arch/x86/src/lib/infect.c	45.42% <100.00%> (ø)
criu/page-xfer.c	78.48% <0.00%> (-0.93%)	:arrow_down:
criu/uffd.c	79.58% <0.00%> (-0.26%)	:arrow_down:
criu/arch/x86/cpu.c	74.65% <0.00%> (-0.18%)	:arrow_down:
criu/include/vma.h	100.00% <0.00%> (ø)
criu/include/parasite.h	100.00% <0.00%> (ø)
compel/src/lib/infect.c
... and 11 more

---

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[time-river]

@time-river what is the status of this PR? Is it ready for review?

YES, I run the test suit in arm64 platform, it works well.

[Snorch]

commit 5211a57f4a73217c737b843389c9be80c50063aa
Author: fu.lin <[email protected]>
Date:   Fri Apr 15 13:00:04 2022 +0800

    compel: switch breakpoint functions to non-inline at arm64 platform
    
    Signed-off-by: fu.lin <[email protected]>
    
    init

^ leftover comment in first patch commit message - please remove.

Also you add argument restore to ptrace_flush_breakpoints() function without mentioning it in a commit message, please do.