On Sat, Apr 21, 2012 at 05:28:36PM -0400, Xin Tong wrote:
> On Mon, Apr 16, 2012 at 10:51 PM, 陳韋任 wrote:
> >> what does the inline sequence look like ? what kind of things (other
> >> than refill tlb) performed in callout but not the inlined sequence ?
> >
> > What do you mean by the inline seque
On Mon, Apr 16, 2012 at 10:51 PM, 陳韋任 wrote:
>> what does the inline sequence look like ? what kind of things (other
>> than refill tlb) performed in callout but not the inlined sequence ?
>
> What do you mean by the inline sequence, the host binary? If so,
>
> ---
> 0xe86c8
> mov_i32 tmp2
On Wed, Apr 18, 2012 at 02:49, 陳韋任 wrote:
> On Tue, Apr 17, 2012 at 08:17:09PM +, Blue Swirl wrote:
>> On Tue, Apr 17, 2012 at 05:40, Xin Tong wrote:
>> > that is possible. but if that is the case, why not split the tlb
>> > walking and the tlb fill ? can anyone please confirm ?
>>
>> I sent
On Tue, Apr 17, 2012 at 08:17:09PM +, Blue Swirl wrote:
> On Tue, Apr 17, 2012 at 05:40, Xin Tong wrote:
> > that is possible. but if that is the case, why not split the tlb
> > walking and the tlb fill ? can anyone please confirm ?
>
> I sent a patch earlier that did something like that but
On Tue, Apr 17, 2012 at 05:40, Xin Tong wrote:
> that is possible. but if that is the case, why not split the tlb
> walking and the tlb fill ? can anyone please confirm ?
I sent a patch earlier that did something like that but it wasn't very
successful:
http://lists.nongnu.org/archive/html/qemu-d
> > If TLB miss, it will call something like __ldb_mmu (b). __ldb_mmu will try
> > to
> > walk guest page table, then fill TLB entry if page table hit, or raise a
> > guest
> > page fault exception if page table miss.
>
> Yep. that is what i was taught. the sequence of code above is an
> inlined
> what does the inline sequence look like ? what kind of things (other
> than refill tlb) performed in callout but not the inlined sequence ?
What do you mean by the inline sequence, the host binary? If so,
---
0xe86c8
mov_i32 tmp2,edi
qemu_ld8u tmp0,tmp2,$0x0
ext8u_i32 tmp12,tmp0
mo
that is possible. but if that is the case, why not split the tlb
walking and the tlb fill ? can anyone please confirm ?
Xin
2012/4/16 陳韋任 :
>> > If TLB miss, it will call something like __ldb_mmu (b). __ldb_mmu will try
>> > to
>> > walk guest page table, then fill TLB entry if page table hit,
On Mon, Apr 16, 2012 at 10:51 PM, 陳韋任 wrote:
>> what does the inline sequence look like ? what kind of things (other
>> than refill tlb) performed in callout but not the inlined sequence ?
>
> What do you mean by the inline sequence, the host binary? If so,
>
> ---
> 0xe86c8
> mov_i32 tmp2
it seems qemu has an inlined sequence to walk the tlb. if that fails,
it does a call out.
tcg_out_tlb_load(s, addrlo_idx, mem_index, s_bits, args,
label_ptr, offsetof(CPUTLBEntry, addr_write));
/* TLB Hit. */
tcg_out_qemu_st_direct(s, data_reg, data_reg2,
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