From mboxrd@z Thu Jan 1 00:00:00 1970 From: He Zhe Subject: Re: [PATCH] kernel/dma: Fix panic caused by passing swiotlb to command line Date: Sat, 22 Sep 2018 20:56:58 +0800 Message-ID: References: <1537154831-447363-1-git-send-email-zhe.he@windriver.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1537154831-447363-1-git-send-email-zhe.he-CWA4WttNNZF54TAoqtyWWQ@public.gmane.org> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: konrad.wilk-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org, hch-jcswGhMUV9g@public.gmane.org, m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, robin.murphy-5wv7dgnIgG8@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: iommu@lists.linux-foundation.org TWF5IEkgaGF2ZSB5b3VyIGlucHV0PwoKVGhhbmtzLApaaGUKCk9uIDIwMTjlubQwOeaciDE35pel IDExOjI3LCB6aGUuaGVAd2luZHJpdmVyLmNvbSB3cm90ZToKPiBGcm9tOiBIZSBaaGUgPHpoZS5o ZUB3aW5kcml2ZXIuY29tPgo+Cj4gc2V0dXBfaW9fdGxiX25wYWdlcyBkb2VzIG5vdCBjaGVjayBp bnB1dCBhcmd1bWVudCBiZWZvcmUgcGFzc2luZyBpdAo+IHRvIGlzZGlnaXQuIFRoZSBhcmd1bWVu dCB3b3VsZCBiZSBhIE5VTEwgcG9pbnRlciBpZiAic3dpb3RsYiIsIHdpdGhvdXQKPiBpdHMgdmFs dWUsIGlzIHNldCBpbiBjb21tYW5kIGxpbmUgYW5kIHRodXMgY2F1c2VzIHRoZSBmb2xsb3dpbmcg cGFuaWMuCj4KPiBQQU5JQzogZWFybHkgZXhjZXB0aW9uIDB4ZTMgSVAgMTA6ZmZmZmZmZmZiYjli OGU5ZiBlcnJvciAwIGNyMiAweDAKPiBbICAgIDAuMDAwMDAwXSBDUFU6IDAgUElEOiAwIENvbW06 IHN3YXBwZXIgTm90IHRhaW50ZWQgNC4xOS4wLXJjMy15b2N0by1zdGFuZGFyZCsgIzkKPiBbICAg IDAuMDAwMDAwXSBSSVA6IDAwMTA6c2V0dXBfaW9fdGxiX25wYWdlcysweGYvMHg5NQo+IC4uLgo+ IFsgICAgMC4wMDAwMDBdIENhbGwgVHJhY2U6Cj4gWyAgICAwLjAwMDAwMF0gIGRvX2Vhcmx5X3Bh cmFtKzB4NTcvMHg4ZQo+IFsgICAgMC4wMDAwMDBdICBwYXJzZV9hcmdzKzB4MjA4LzB4MzIwCj4g WyAgICAwLjAwMDAwMF0gID8gcmRpbml0X3NldHVwKzB4MzAvMHgzMAo+IFsgICAgMC4wMDAwMDBd ICBwYXJzZV9lYXJseV9vcHRpb25zKzB4MjkvMHgyZAo+IFsgICAgMC4wMDAwMDBdICA/IHJkaW5p dF9zZXR1cCsweDMwLzB4MzAKPiBbICAgIDAuMDAwMDAwXSAgcGFyc2VfZWFybHlfcGFyYW0rMHgz Ni8weDRkCj4gWyAgICAwLjAwMDAwMF0gIHNldHVwX2FyY2grMHgzMzYvMHg5OWUKPiBbICAgIDAu MDAwMDAwXSAgc3RhcnRfa2VybmVsKzB4NmYvMHg0ZTYKPiBbICAgIDAuMDAwMDAwXSAgeDg2XzY0 X3N0YXJ0X3Jlc2VydmF0aW9ucysweDI0LzB4MjYKPiBbICAgIDAuMDAwMDAwXSAgeDg2XzY0X3N0 YXJ0X2tlcm5lbCsweDZmLzB4NzIKPiBbICAgIDAuMDAwMDAwXSAgc2Vjb25kYXJ5X3N0YXJ0dXBf NjQrMHhhNC8weGIwCj4KPiBUaGlzIHBhdGNoIGFkZHMgYSBjaGVjayB0byBwcmV2ZW50IHRoZSBw YW5pYy4KPgo+IFNpZ25lZC1vZmYtYnk6IEhlIFpoZSA8emhlLmhlQHdpbmRyaXZlci5jb20+Cj4g Q2M6IHN0YWJsZUB2Z2VyLmtlcm5lbC5vcmcKPiBDYzoga29ucmFkLndpbGtAb3JhY2xlLmNvbQo+ IENjOiBoY2hAbHN0LmRlCj4gQ2M6IG0uc3p5cHJvd3NraUBzYW1zdW5nLmNvbQo+IENjOiByb2Jp bi5tdXJwaHlAYXJtLmNvbQo+IC0tLQo+ICBrZXJuZWwvZG1hL3N3aW90bGIuYyB8IDUgKysrKysK PiAgMSBmaWxlIGNoYW5nZWQsIDUgaW5zZXJ0aW9ucygrKQo+Cj4gZGlmZiAtLWdpdCBhL2tlcm5l bC9kbWEvc3dpb3RsYi5jIGIva2VybmVsL2RtYS9zd2lvdGxiLmMKPiBpbmRleCA0ZjhhNmRiLi40 NmZjMzRlIDEwMDY0NAo+IC0tLSBhL2tlcm5lbC9kbWEvc3dpb3RsYi5jCj4gKysrIGIva2VybmVs L2RtYS9zd2lvdGxiLmMKPiBAQCAtMTA5LDYgKzEwOSwxMSBAQCBzdGF0aWMgaW50IGxhdGVfYWxs b2M7Cj4gIHN0YXRpYyBpbnQgX19pbml0Cj4gIHNldHVwX2lvX3RsYl9ucGFnZXMoY2hhciAqc3Ry KQo+ICB7Cj4gKwlpZiAoIXN0cikgewo+ICsJCXByX2VycigiQ29uZmlnIHN0cmluZyBub3QgcHJv dmlkZWRcbiIpOwo+ICsJCXJldHVybiAtRUlOVkFMOwo+ICsJfQo+ICsKPiAgCWlmIChpc2RpZ2l0 KCpzdHIpKSB7Cj4gIAkJaW9fdGxiX25zbGFicyA9IHNpbXBsZV9zdHJ0b3VsKHN0ciwgJnN0ciwg MCk7Cj4gIAkJLyogYXZvaWQgdGFpbCBzZWdtZW50IG9mIHNpemUgPCBJT19UTEJfU0VHU0laRSAq LwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KaW9tbXUg bWFpbGluZyBsaXN0CmlvbW11QGxpc3RzLmxpbnV4LWZvdW5kYXRpb24ub3JnCmh0dHBzOi8vbGlz dHMubGludXhmb3VuZGF0aW9uLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2lvbW11