From: "Jan Beulich" <JBeulich@suse.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
Keir Fraser <keir@xen.org>,
xen-devel <xen-devel@lists.xenproject.org>
Subject: Re: [PATCH v4 RFC 1/6] x86/PCI: add config space write abstract intercept logic
Date: Tue, 23 Jun 2015 13:55:09 +0100 [thread overview]
Message-ID: <5589734D02000078000884DD@mail.emea.novell.com> (raw)
In-Reply-To: <0574A5C5-DC67-4C8B-982E-5D8CD75A5633@oracle.com>
>>> On 23.06.15 at 13:06, <konrad.wilk@oracle.com> wrote:
> On June 23, 2015 3:21:17 AM EDT, Jan Beulich <JBeulich@suse.com> wrote:
>>>>> On 22.06.15 at 21:31, <konrad.wilk@oracle.com> wrote:
>>>> @@ -1804,8 +1804,12 @@ static bool_t pci_cfg_ok(struct domain *
>>>> start |= CF8_ADDR_HI(currd->arch.pci_cf8);
>>>> }
>>>>
>>>> - return !xsm_pci_config_permission(XSM_HOOK, currd, machine_bdf,
>>>> - start, start + size - 1,
>>write);
>>>> + if ( xsm_pci_config_permission(XSM_HOOK, currd, machine_bdf,
>>>> + start, start + size - 1,
>>!!write) != 0 )
>>>> + return 0;
>>>> +
>>>> + return !write ||
>>>> + pci_conf_write_intercept(0, machine_bdf, start, size,
>>write) >= 0;
>>>
>>> Won't the 'write' parameter cause an compiler error as it expects an
>>> pointer?
>>
>>No, certainly not - !write means the same as write != NULL, but is
>>(imo) easier to read.
>
> I meant the
>
> pci_conf_write_intercept(...,write).
>
> The prototype for the last parameter is for *uint32?
But the write parameter is being changed to this very type in
this patch.
Jan
next prev parent reply other threads:[~2015-06-23 12:55 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-22 14:38 [PATCH v4 RFC 0/6] x86/MSI: XSA-120, 126, 128-131 follow-up Jan Beulich
2015-06-22 14:46 ` [PATCH v4 RFC 1/6] x86/PCI: add config space write abstract intercept logic Jan Beulich
2015-06-22 19:31 ` Konrad Rzeszutek Wilk
2015-06-23 7:21 ` Jan Beulich
2015-06-23 11:06 ` Konrad Rzeszutek Wilk
2015-06-23 12:55 ` Jan Beulich [this message]
2015-06-24 17:09 ` Andrew Cooper
2015-06-22 14:47 ` [PATCH v4 RFC 2/6] x86/MSI-X: track host and guest mask‑all requests separately Jan Beulich
2015-06-24 17:15 ` Andrew Cooper
2015-06-25 8:01 ` Jan Beulich
2015-06-25 14:25 ` Andrew Cooper
2015-06-22 14:49 ` [PATCH v4 3/6] x86/MSI-X: be more careful during teardown Jan Beulich
2015-06-22 14:50 ` [PATCH v4 4/6] x86/MSI-X: access MSI-X table only after having enabled MSI-X Jan Beulich
2015-06-22 14:51 ` [PATCH v4 RFC 5/6] x86/MSI-X: reduce fiddling with control register during restore Jan Beulich
2015-06-22 14:51 ` [PATCH v4 RFC 6/6] x86/MSI: properly track guest masking requests Jan Beulich
2015-06-24 17:24 ` Andrew Cooper
2015-06-25 8:04 ` Jan Beulich
2015-06-25 14:26 ` Andrew Cooper
2015-06-25 14:49 ` Jan Beulich
2015-07-13 11:42 ` [PATCH v4 RFC 0/6] x86/MSI: XSA-120, 126, 128-131 follow-up Jan Beulich
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