Re: [PATCH v22 07/24] x86/sgx: Add wrappers for ENCLS leaf functions

[Borislav Petkov]

On Mon, Oct 07, 2019 at 09:04:05PM -0700, Sean Christopherson wrote:
> > BIT(30)
> 
> This is intentionally open coded so that it can be stringified in asm.

It stringifies just fine with the BIT() macro too:

# 187 "arch/x86/kernel/cpu/sgx/encls.h" 1
        1: .byte 0x0f, 0x01, 0xcf;
        2:
.section .fixup,"ax"
3: orl $((((1UL))) << (30)),%eax
   jmp 2b
.previous

and the resulting object:

Disassembly of section .fixup:

0000000000000000 <.fixup>:
   0:   0d 00 00 00 40          or     $0x40000000,%eax
   5:   e9 00 00 00 00          jmpq   a <__addressable_sgx_free_page107+0x2>

-- 
Regards/Gruss,
    Boris.

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