lkml.org 
[lkml]   [2023]   [Feb]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2 27/29] LoongArch: KVM: Implement vcpu world switch
From
Date


在 2023年02月21日 15:45, Paolo Bonzini 写道:
> On 2/20/23 07:57, Tianrui Zhao wrote:
>> + /* Load Guest gprs */
>> + ld.d $r1, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 1)
>> + ld.d $r2, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 2)
>> + ld.d $r3, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 3)
>> + ld.d $r4, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 4)
>> + ld.d $r5, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 5)
>> + ld.d $r7, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 7)
>> + ld.d $r8, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 8)
>> + ld.d $r9, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 9)
>> + ld.d $r10, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 10)
>> + ld.d $r11, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 11)
>> + ld.d $r12, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 12)
>> + ld.d $r13, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 13)
>> + ld.d $r14, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 14)
>> + ld.d $r15, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 15)
>> + ld.d $r16, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 16)
>> + ld.d $r17, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 17)
>> + ld.d $r18, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 18)
>> + ld.d $r19, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 19)
>> + ld.d $r20, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 20)
>> + ld.d $r21, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 21)
>> + ld.d $r22, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 22)
>> + ld.d $r23, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 23)
>> + ld.d $r24, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 24)
>> + ld.d $r25, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 25)
>> + ld.d $r26, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 26)
>> + ld.d $r27, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 27)
>> + ld.d $r28, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 28)
>> + ld.d $r29, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 29)
>> + ld.d $r30, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 30)
>> + ld.d $r31, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * 31)
>> + /* Load KVM_ARCH register */
>> + ld.d \KVM_ARCH, \KVM_ARCH, (KVM_ARCH_GGPR + 8 * \GPRNUM)
>
> This in practice relies on KVM_ARCH being a2 so please remove the
> KVM_ARCH and GPRNUM arguments from the macro; just replace \KVM_ARCH
> with a2 as needed.
>
> Also, in these ld.d and st.d sequences you may want to use the ABI
> names instead of the rNN names, so it's clearer that you are skipping
> the KVM_ARCH register.
>
> Paolo

Thanks, I will use a2 to replace the KVM_ARCH and remove the GPRNUM
argument.

Thanks
Tianrui Zhao


\
 
 \ /
  Last update: 2023-03-27 00:30    [W:0.224 / U:0.024 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site