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Re: [Qemu-devel] [PATCH 4/4] ahci-test: improve rw buffer patterns

From: John Snow
Subject: Re: [Qemu-devel] [PATCH 4/4] ahci-test: improve rw buffer patterns
Date: Tue, 31 Mar 2015 18:01:06 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0

On 03/31/2015 05:55 PM, Ed Maste wrote:
On 31 March 2015 at 17:44, John Snow <address@hidden> wrote:

My apologies;

Not at all, thanks for your help!

Head into your build directory and try this:

make tests/ahci-test
export QTEST_QEMU_BINARY=i386-softmmu/qemu-system-i386
export QTEST_QEMU_IMG=./qemu-img

This should show you which test in particular is failing. I have a hunch it
will be the PIO, again...


feynman% ./tests/ahci-test
/i386/ahci/sanity: OK
/i386/ahci/pci_spec: OK
/i386/ahci/pci_enable: OK
/i386/ahci/hba_spec: OK
/i386/ahci/hba_enable: OK
/i386/ahci/identify: OK
/i386/ahci/io/pio/lba28/simple: **
ERROR:tests/ahci-test.c:790:ahci_test_io_rw_simple: assertion failed
(memcmp(tx, rx, bufsize) == 0): (0xffffffffffffffff == 0x00000000)
zsh: abort (core dumped)  ./tests/ahci-test

In the meantime, what is your setup? which release, what architecture?

This is the FreeBSD stable/10 branch on amd64 (so part way between
10.1 and what will become 10.2):

FreeBSD feynman 10.1-STABLE FreeBSD 10.1-STABLE #28
r280427+86df2de(stable-10): Thu Mar 26 16:07:47 EDT 2015

Thanks, one more if you have the spare cycles; and then I'll go prepare a machine to debug for myself.

./ahci-test -p /i386/ahci/io/pio/lba28/short
./ahci-test -p /i386/ahci/io/pio/lba48/short

quite likely both work for you, while changing short for "simple" "long" or "double" probably all fail.

./ahci-test -p /i386/ahci/io/dma/

probably launches a series of tests that also all work correctly.

Thank you for your help,

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