* [PATCH] x86: SKINIT with operand needs IgnoreSize
@ 2022-07-28 11:33 Jan Beulich
2022-07-28 15:25 ` H.J. Lu
0 siblings, 1 reply; 2+ messages in thread
From: Jan Beulich @ 2022-07-28 11:33 UTC (permalink / raw)
To: Binutils
Without it in 16-bit mode a pointless operand size prefix would be
emitted.
--- a/opcodes/i386-opc.tbl
+++ b/opcodes/i386-opc.tbl
@@ -2068,7 +2068,7 @@ clgi, 0xf01dd, None, CpuSVME, No_bSuf|No
invlpga, 0xf01df, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
invlpga, 0xf01df, None, CpuSVME, AddrPrefixOpReg, { Acc|Word|Dword|Qword, RegC|Dword }
skinit, 0xf01de, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
-skinit, 0xf01de, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Acc|Dword }
+skinit, 0xf01de, None, CpuSVME, No_bSuf|IgnoreSize|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Acc|Dword }
stgi, 0xf01dc, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
vmgexit, 0xf30f01d9, None, CpuSEV_ES, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
vmload, 0xf01da, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] x86: SKINIT with operand needs IgnoreSize
2022-07-28 11:33 [PATCH] x86: SKINIT with operand needs IgnoreSize Jan Beulich
@ 2022-07-28 15:25 ` H.J. Lu
0 siblings, 0 replies; 2+ messages in thread
From: H.J. Lu @ 2022-07-28 15:25 UTC (permalink / raw)
To: Jan Beulich; +Cc: Binutils
On Thu, Jul 28, 2022 at 4:33 AM Jan Beulich <jbeulich@suse.com> wrote:
>
> Without it in 16-bit mode a pointless operand size prefix would be
> emitted.
>
> --- a/opcodes/i386-opc.tbl
> +++ b/opcodes/i386-opc.tbl
> @@ -2068,7 +2068,7 @@ clgi, 0xf01dd, None, CpuSVME, No_bSuf|No
> invlpga, 0xf01df, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
> invlpga, 0xf01df, None, CpuSVME, AddrPrefixOpReg, { Acc|Word|Dword|Qword, RegC|Dword }
> skinit, 0xf01de, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
> -skinit, 0xf01de, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Acc|Dword }
> +skinit, 0xf01de, None, CpuSVME, No_bSuf|IgnoreSize|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, { Acc|Dword }
> stgi, 0xf01dc, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
> vmgexit, 0xf30f01d9, None, CpuSEV_ES, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
> vmload, 0xf01da, None, CpuSVME, No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf, {}
Can you add a testcase?
Thanks.
--
H.J.
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