Re: [PATCH] README: add information about memory usage

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Il 25/02/2014 04:29, Luiz Capitulino ha scritto:
I got a report of someone trying to run tests with a large amount of
RAM (4GB), which broke the guest as free_memory() function (called
by setup_vm()) will override the PCI hole.

Let's document memory constraints so that people don't do that.

Signed-off-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx>
---
 README | 4 ++++
 1 file changed, 4 insertions(+)


diff --git a/README b/README
index db525e3..0f5d810 100644
--- a/README
+++ b/README
@@ -18,6 +18,10 @@ This invocation runs the msr test case. The test outputs to stdio.
 Using qemu (supported since qemu 1.3):
 qemu-system-x86_64 -enable-kvm -device pc-testdev -serial stdio -device isa-debug-exit,iobase=0xf4,iosize=0x4 -kernel ./x86/msr.flat

+Note that it's not necessary to specify the "-m" option to qemu. The default
+memory size is enough. Actually, the tests infrastructure doesn't support too
+much RAM anyway, so specifying a large amount of RAM may break it.
+
 Or use a runner script to detect the correct invocation:
 ./x86-run ./x86/msr.flat
 To select a specific qemu binary, specify the QEMU=<path> environment:


Applying to kvm-unit-tests.

Paolo
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