From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chenxiao Zhao Subject: Re: questions of vm save/restore on arm64 Date: Fri, 3 Jun 2016 10:05:03 -0700 Message-ID: <085e1ec7-cfe7-00b6-d8da-a3f66eddf9ff@gmail.com> References: <5f28430f-50ee-7d5a-2308-0d16f116ab0e@gmail.com> <5750269F.90305@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <5750269F.90305@arm.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Julien Grall , Stefano Stabellini Cc: "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org CgpPbiA2LzIvMjAxNiA1OjI5IEFNLCBKdWxpZW4gR3JhbGwgd3JvdGU6Cj4gSGVsbG8sCj4KPiBP biAwMS8wNi8xNiAwMToyOCwgQ2hlbnhpYW8gWmhhbyB3cm90ZToKPj4KPj4KPj4gT24gNS8zMC8y MDE2IDQ6NDAgQU0sIFN0ZWZhbm8gU3RhYmVsbGluaSB3cm90ZToKPj4+IE9uIEZyaSwgMjcgTWF5 IDIwMTYsIENoZW54aWFvIFpoYW8gd3JvdGU6Cj4+Pj4gSGksCj4+Pj4KPj4+PiBNeSBib2FyZCBp cyBIaWtleSBvbiB3aGljaCBoYXZlIG9jdGEtY29yZSBvZiBhcm0gY29ydGV4LWE1My4gSSBoYXZl Cj4+Pj4gYXBwbGllZCBwYXRjaGVzIFsxXSB0byB0cnkgdm0gc2F2ZS9yZXN0b3JlIG9uIGFybS4K Pj4+PiBUaGVzZSBwYXRjaGVzIG9yaWdpbmFsbHkgZG8gbm90IHdvcmtpbmcgb24gYXJtNjQuIEkg aGF2ZSBtYWRlIHNvbWUKPj4+PiBjaGFuZ2VzIGJhc2VkIG9uIHBhdGNoIHNldCBbMl0uCj4+Pgo+ Pj4gSGVsbG8gQ2hlbnhpYW8sCj4+Pgo+Pj4gdGhhbmtzIGZvciB5b3VyIGludGVyZXN0IGluIFhl biBvbiBBUk0gc2F2ZS9yZXN0b3JlLgo+Pgo+PiBIaSBTdGVmYW5vLAo+Pgo+PiBUaGFua3MgZm9y IHlvdXIgYWR2aWNlLgo+Pgo+PiBJIGZvdW5kIGEgcG9zc2libGUgcmVhc29uIHRoYXQgY2F1c2Ug dGhlIHJlc3RvcmUgZmFpbHVyZSBpcyB0aGF0IHhlbgo+PiBhbHdheXMgZmFpbGVkIG9uIHAybV9s b29rdXAgZm9yIGd1ZXN0IGRvbWFpbi4KPgo+IFdobyBpcyBjYWxsaW5nIHAybV9sb29rdXA/CgpJ dCBjYWxsIGJ5IGhhbmRsZV9odm1fcGFyYW1zKHRvb2xzL2xpYnhjL3hjX3NyX3Jlc3RvcmVfYXJt LmMpIHdoaWxlIApyZXN0b3JpbmcgSFZNX1BBUkFNX1NUT1JFX1BGTi4KCj4KPj4KPj4gSSBjYWxs ZWQgZHVtcF9wMm1fbG9va3VwIGluIHAybV9sb29rKCkgYW5kIGdldCB0aGUgb3V0cHV0IGxpa2Ug YmVsb3c6Cj4+Cj4+IChYRU4pIGRvbTEgSVBBIDB4MDAwMDAwMDAzOTAwMTAwMAo+Cj4gTG9va2lu ZyBhdCB0aGUgbWVtb3J5IGxheW91dCAoc2VlIGluY2x1ZGUvcHVibGljL2FyY2gtYXJtLmgpIDB4 MzkwMDEwMDAKPiBpcyBwYXJ0IG9mIHRoZSBtYWdpYyByZWdpb24uIEl0IGNvbnRhaW5zIHBhZ2Vz IGZvciB0aGUgY29uc29sZSwKPiB4ZW5zdG9yZSwgbWVtYWNjZXNzIChzZWUgdGhlIGxpc3QgaW4g dG9vbHMvbGlieGMveGNfZG9tX2FybS5jKS4KCnllcywgSSBhbHNvIG5vdGljZWQgdGhhdC4KCj4K PiAweDM5MDAxMDAwIGlzIHRoZSBiYXNlIGFkZHJlc3Mgb2YgdGhlIHhlbnN0b3JlIHBhZ2UuCj4K Pj4gKFhFTikgUDJNIEAgMDAwMDAwMDgwMWU3Y2U4MCBtZm46MHg3OWYzYQo+PiAoWEVOKSBVc2lu ZyBjb25jYXRlbmF0ZWQgcm9vdCB0YWJsZSAwCj4+IChYRU4pIDFTVFsweDBdID0gMHgwMDQwMDAw MDc5ZjNjNzdmCj4+IChYRU4pIDJORFsweDFjOF0gPSAweDAwMDAwMDAwMDAwMDAwMDAKPj4KPj4g TXkgcXVlc3Rpb24gaXM6Cj4+Cj4+IDEuIHdobyBpcyByZXNwb25zaWJsZSBmb3IgcmVzdG9yaW5n IHAybSB0YWJsZSwgWGVuIG9yIGd1ZXN0IGtlcm5lbD8KPgo+IEFGQUlLLCB0aGUgdG9vbHN0YWNr IGlzIHJlc3RvcmluZyB0aGUgbW9zdCBvZiB0aGUgbWVtb3J5Lgo+Cj4+IDIuIEFmdGVyIHJlc3Rv cmUsIHRoZSB2bSBhbHdheXMgZ2V0IHplcm8gbWVtb3J5IHNwYWNlLCBidXQgdGhlcmUgaXMgbm8K Pgo+IFdoYXQgZG8geW91IG1lYW4gYnkgInplcm8gbWVtb3J5IHNwYWNlIj8KCkkgbWVhbiB4bCBk b2VzIG5vdCBhc3NpZ24gYW55IG1lbW9yeSB0byB0aGUgcmVzdG9yZWQgVk0uCgpOYW1lICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIElEICAgTWVtIFZDUFVzICAgICAgU3Rh dGUgClRpbWUocykKRG9tYWluLTAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg MCAgMTAyNCAgICAgOCAgICAgci0tLS0tIAogICA3Ni4zCmd1ZXN0ICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgIDIgICAgIDAgICAgIDEgICAgIHItLS0tLSAKICAgIDEuOQoK Cj4KPj4gZXJyb3IgcmVwb3J0ZWQgb24gdGhlIHJlc3RvcmUgcHJvZ3Jlc3MuIERvZXMgdGhlIG1l bW9yeSByZXF1ZXN0ZWQgYnkgdGhlCj4+IGd1ZXN0IGtlcm5lbCBvciBzaG91bGQgYmUgYWxsb2Nh dGVkIGVhcmx5IGJ5IGh5cGVydmlzb3I/Cj4KPiBCZWFyIGluIG1pbmQgdGhhdCB0aGUgcGF0Y2gg c2VyaWVzIHlvdSBhcmUgd29ya2luZyBvbiBpcyBhbiBSRkMgYW5kIHRoZQo+IEFSTTY0IHdhcyBu b3Qgc3VwcG9ydGVkLiBUaGVyZSBtaWdodCBiZSBzb21lIGlzc3VlIGluIHRoZSBzYXZlL3Jlc3Rv cmUKPiBwYXRoLgo+Cj4gRm9yIGluc3RhbmNlIHhjX2NsZWFyX2RvbWFpbl9wYWdlICh0b29scy9s aWJ4Yy94Y19zcl9yZXN0b3JlX2FybS5jKSBtYWluCj4gcmV0dXJuIGFuIGVycm9yIGlmIHRoZSBt ZW1vcnkgaXMgbm90IG1hcHBlZC4gQnV0IHRoZSBjYWxsZXIgZG9lcyBub3QKPiBjaGVjayB0aGUg cmV0dXJuIHZhbHVlLgo+Cj4gUmVnYXJkcywKCkkgZmluYWxseSBmb3VuZCBvdXQgdGhhdCB0aGUg cHJvYmxlbSBpcyB0aGF0IHRoZSB0b29sc3RhY2sgZGlkIG5vdCBnZXQgCmNvcnJldCBwMm1fc2l6 ZSB3aGlsZSBzZW5kaW5nIGFsbCBwYWdlcyBvbiBzYXZlKGFsd2F5cyBiZSB6ZXJvKS4gQWZ0ZXIg SSAKZml4ZWQgdGhhdCwgdGhlIGd1ZXN0IGNvdWxkIGJlIHJlc3RvcmVkIGJ1dCBndWVzdCBrZXJu ZWwgY2F1Z2h0IApoYW5kbGVfbW1fZmF1bHQoKS4KCndoZXJlIGRvIHlvdSB0aGluayBJJ20gZ29p bmcgdG8gaW52ZXN0aWdhdGUsIGd1ZXN0IGtlcm5lbCBoaWJlcm5hdGlvbiAKcmVzdG9yZSBvciB4 ZW4/CgpCZXN0IHJlZ2FyZHMuCgo+CgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4u b3JnCmh0dHA6Ly9saXN0cy54ZW4ub3JnL3hlbi1kZXZlbAo=