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Re: [Qemu-devel] "tcg: Clean up direct block chaining safety checks" bre

From: Max Filippov
Subject: Re: [Qemu-devel] "tcg: Clean up direct block chaining safety checks" breaks target-xtensa mmu test
Date: Sun, 15 May 2016 22:53:56 +0300
User-agent: Mutt/1.5.23 (2014-03-12)

On Sun, May 15, 2016 at 10:38:46PM +0300, Sergey Fedorov wrote:
> On 15/05/16 21:58, Max Filippov wrote:
> > I've noticed that the commit 5b053a4a28278 (tcg: Clean up direct block
> > chaining safety checks) has broken tearget-xtensa test cross_page_tb
> > from the tests/tcg/xtensa/test_mmu.S. The test runs a TB that spans two
> > adjacent pages, then unmaps the second page and runs it again. It
> > expects an instruction fetch exception on the second run, but with the
> > said commit doesn't get it. Reverting that commit fixes the test.
> > Any suggestions?
> That's too strange. How do I run the test?

I've minimized the test case, the source and the binary are available

You can run it as
  qemu-system-xtensa -M sim -cpu dc232b -nographic -semihosting -kernel 

-- Max

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