linux-kernel - Re: [PATCH kvm-unit-tests 0/2] x86: Additional smsw tests

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Date:	Fri, 06 Jun 2014 10:04:30 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Nadav Amit <namit@...technion.ac.il>
CC:	gleb@...nel.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, x86@...nel.org, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH kvm-unit-tests 0/2] x86: Additional smsw tests

Il 06/06/2014 01:56, Nadav Amit ha scritto:
> This patch set adds two tests for smsw. The first one is intended to add
> coverage of smsw. It covers the case smsw is executed with memory operand in a
> page which is write-protected by the hypervisor. Note that the existing smsw
> tests are not supposed to be trapped by the hypervisor. This test was added
> just for additional coverage.
>
> The realmode smsw test covers the recent patch that saves the high 16-bits to
> 32-bit register operand. Implementing a long-mode test is difficult since we
> need to cause an "invalid guest state" in long-mode.

You can use emulator.flat to test the emulator in long mode.

See test_movabs for an example.

Paolo

> Nadav Amit (2):
>   x86: emulator: additional smsw test-case
>   x86: realmode: test smsw behavior with register operand
>
>  x86/emulator.c | 10 ++++++++--
>  x86/realmode.c | 15 +++++++++++++++
>  2 files changed, 23 insertions(+), 2 deletions(-)
>

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