Triplett ; Andrew Lutomirski
> ; Huang, Kai ; David Rientjes
> ; Jarkko Sakkinen
> Subject: Re: [RFC PATCH v1 2/3] x86/vdso: Modify
> __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack
>
> On Mon, Apr 22, 2019 at 5:37 PM Cedric Xing
> wrote:
> >
&g
> On Apr 23, 2019, at 12:26 PM, Sean Christopherson
> wrote:
>
>> On Mon, Apr 22, 2019 at 05:37:24PM -0700, Cedric Xing wrote:
>> The previous __vdso_sgx_enter_enclave() requires enclaves to preserve %rsp,
>> which prohibits enclaves from allocating and passing parameters for
>> untrusted fun
On Mon, Apr 22, 2019 at 05:37:24PM -0700, Cedric Xing wrote:
> The previous __vdso_sgx_enter_enclave() requires enclaves to preserve %rsp,
> which prohibits enclaves from allocating and passing parameters for
> untrusted function calls (aka. o-calls).
>
> This patch addresses the problem above by i
On Mon, Apr 22, 2019 at 5:37 PM Cedric Xing wrote:
>
> The previous __vdso_sgx_enter_enclave() requires enclaves to preserve %rsp,
> which prohibits enclaves from allocating and passing parameters for
> untrusted function calls (aka. o-calls).
>
> This patch addresses the problem above by introduc
The previous __vdso_sgx_enter_enclave() requires enclaves to preserve %rsp,
which prohibits enclaves from allocating and passing parameters for
untrusted function calls (aka. o-calls).
This patch addresses the problem above by introducing a new ABI that preserves
%rbp instead of %rsp. Then __vdso_
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