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Re: [Xen-devel] [PATCH 1/2] x86/HVM: drop hvm_fetch_from_guest_linear()
- To: Jan Beulich <JBeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 30 Aug 2018 13:22:44 +0100
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- Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Olaf Hering <olaf@xxxxxxxxx>, Paul Durrant <paul.durrant@xxxxxxxxxx>, Wei Liu <wei.liu2@xxxxxxxxxx>, Tim Deegan <tim@xxxxxxx>
- Delivery-date: Thu, 30 Aug 2018 12:23:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 30/08/18 13:02, Jan Beulich wrote:
>>>> On 30.08.18 at 13:18, <andrew.cooper3@xxxxxxxxxx> wrote:
>> On 30/08/18 12:09, Jan Beulich wrote:
>>> @@ -2512,9 +2512,10 @@ void hvm_emulate_init_per_insn(
>>> hvm_access_insn_fetch,
>>> &hvmemul_ctxt->seg_reg[x86_seg_cs],
>>> &addr) &&
>>> - hvm_fetch_from_guest_linear(hvmemul_ctxt->insn_buf, addr,
>>> - sizeof(hvmemul_ctxt->insn_buf),
>>> - pfec, NULL) == HVMTRANS_okay) ?
>>> + hvm_copy_from_guest_linear(hvmemul_ctxt->insn_buf, addr,
>>> + sizeof(hvmemul_ctxt->insn_buf),
>>> + pfec | PFEC_insn_fetch, NULL,
>>> + NULL) == HVMTRANS_okay) ?
>> Does this even compile? You seem to have an extra NULL here and several
>> later places.
> It does - with "x86/HVM: implement memory read caching" also
> applied. IOW - I'm sorry, insufficient re-ordering work done
> when moving these two ahead.
Does it? This patch has a mix of callers with 4 and 5 parameters, which
is why I noticed it in the first place.
With it fixed up to compile, and preferably with the other adjustment
included, Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
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