linux-kernel - Re: [PATCH v5] x86/umip: Add emulation/spoofing for SLDT and STR instructions

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Message-ID: <20200713235942.GA28683@ranerica-svr.sc.intel.com>
Date:   Mon, 13 Jul 2020 16:59:42 -0700
From:   Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
To:     Brendan Shanks <bshanks@...eweavers.com>
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, hpa@...or.com, x86@...nel.org, ebiederm@...ssion.com,
        andi@...much.email, Babu.Moger@....com
Subject: Re: [PATCH v5] x86/umip: Add emulation/spoofing for SLDT and STR
 instructions

On Fri, Jul 10, 2020 at 03:45:25PM -0700, Brendan Shanks wrote:
> Add emulation/spoofing of SLDT and STR for both 32- and 64-bit
> processes.
> 
> Wine users have found a small number of Windows apps using SLDT that
> were crashing when run on UMIP-enabled systems.
> 
> Reported-by: Andreas Rammhold <andi@...much.email>
> Originally-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
> Signed-off-by: Brendan Shanks <bshanks@...eweavers.com>

FWIW, tested on hardware with UMIP.

Reviewed-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
Tested-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>

Thanks and BR,
Ricardo