From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peng Fan Subject: Re: [PATCH V4] xen/arm: domain_build: allocate lowmem for dom0 as much as possible Date: Sat, 8 Oct 2016 10:25:25 +0800 Message-ID: <20161008022523.GA15741@linux-7smt.suse> References: <1474599334-30709-1-git-send-email-peng.fan@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <1474599334-30709-1-git-send-email-peng.fan@nxp.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Peng Fan Cc: julien.grall@arm.com, sstabellini@kernel.org, xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org SGkgU3RlZmFubywgSnVsaWVuCgpBbnkgY29tbWVudHMgb24gdGhpcyB2NCBwYXRjaD8KClRoYW5r cywKUGVuZwpPbiBGcmksIFNlcCAyMywgMjAxNiBhdCAxMDo1NTozNEFNICswODAwLCBQZW5nIEZh biB3cm90ZToKPk9uIEFBcmNoNjQgU29Dcywgc29tZSBJUHMgbWF5IG9ubHkgaGF2ZSB0aGUgY2Fw YWJpbGl0eSB0byBhY2Nlc3MKPjMyIGJpdHMgYWRkcmVzcyBzcGFjZS4gVGhlIHBoeXNpY2FsIG1l bW9yeSBhc3NpZ25lZCBmb3IgRG9tMCBtYXliZQo+bm90IGluIDRHQiBhZGRyZXNzIHNwYWNlLCB0 aGVuIHRoZSBJUHMgd2lsbCBub3Qgd29yayBwcm9wZXJseS4KPlNvIG5lZWQgdG8gYWxsb2NhdGUg bWVtb3J5IHVuZGVyIDRHQiBmb3IgRG9tMC4KPgo+VGhlcmUgaXMgbm8gcmVzdHJpY3Rpb24gdGhh dCBob3cgbXVjaCBsb3dtZW0gbmVlZHMgdG8gYmUgYWxsb2NhdGVkIGZvcgo+RG9tMCAsc28gYWxs b2NhdGUgbG93bWVtIGFzIG11Y2ggYXMgcG9zc2libGUgZm9yIERvbTAuCj4KPlRoaXMgcGF0Y2gg ZG9lcyBub3QgYWZmZWN0IDMyLWJpdCBkb21haW4sIGJlY2F1c2UgVmFyaWFibGUgImxvd21lbSIg aXMKPnNldCB0byB0cnVlIGF0IHRoZSBiZWdpbm5pbmcuIElmIGZhaWxlZCB0byBhbGxvY2F0ZSBi YW5rMCB1bmRlciA0R0IsCj5uZWVkIHRvIHBhbmljIGZvciAzMi1iaXQgZG9tYWluLCBiZWNhdXNl IDMyLWJpdCBkb21haW4gcmVxdWlyZXMgYmFuazAKPmJlIGFsbG9jYXRlZCB1bmRlciA0R0IuCj4K PkZvciA2NC1iaXQgZG9tYWluLCBzZXQgImxvd21lbSIgdG8gZmFsc2UsIGFuZCBjb250aW51ZSBh bGxvY2F0aW5nCj5tZW1vcnkgZnJvbSBhYm92ZSA0R0IuCj4KPlNpZ25lZC1vZmYtYnk6IFBlbmcg RmFuIDxwZW5nLmZhbkBueHAuY29tPgo+Q2M6IFN0ZWZhbm8gU3RhYmVsbGluaSA8c3N0YWJlbGxp bmlAa2VybmVsLm9yZz4KPkNjOiBKdWxpZW4gR3JhbGwgPGp1bGllbi5ncmFsbEBhcm0uY29tPgo+ LS0tCj4KPlRoaXMgcGF0Y2ggaXMgdG8gcmVzb2x2ZSB0aGUgaXNzdWUgbWVudGlvbmVkIGluCj5o dHRwczovL2xpc3RzLnhlbi5vcmcvYXJjaGl2ZXMvaHRtbC94ZW4tZGV2ZWwvMjAxNi0wOS9tc2cw MDIzNS5odG1sCj4KPiBUZXN0ZWQgcmVzdWx0czoKPiAoWEVOKSBBbGxvY2F0aW5nIDE6MSBtYXBw aW5ncyB0b3RhbGxpbmcgMjA0OE1CIGZvciBkb20wOgo+IChYRU4pIEJBTktbMF0gMHgwMDAwMDA4 ODAwMDAwMC0weDAwMDAwMGY4MDAwMDAwICgxNzkyTUIpCj4gKFhFTikgQkFOS1sxXSAweDAwMDAw OWUwMDAwMDAwLTB4MDAwMDA5ZjAwMDAwMDAgKDI1Nk1CKQo+IDE3OTJNIGFsbG9jYXRlZCBpbiA0 R0IgYWRkcmVzcyBzcGFjZS4KPgo+VjQ6Cj4gQWRkcmVzcyBjb21tZW50cyBpbiBWMzogaHR0cHM6 Ly9saXN0cy54ZW4ub3JnL2FyY2hpdmVzL2h0bWwveGVuLWRldmVsLzIwMTYtMDkvbXNnMDI0OTku aHRtbAo+IERyb3AgdW5lY2Nlc3NhcnkgY2hlY2sgd2hlbiBmYWlsZWQgdG8gYWxsb2NhdGUgbWVt b3J5IHVuZGVyIDRHQgo+IFJlZmluZSBjb21tZW50cyBhY2NvcmRpbmcgdG8gSnVsaWVuJ3Mgc3Vn Z2VzdGlvbiBpbiBWMy4KPiBLZWVwICJiaXRzIDw9IChsb3dtZW0gPyAzMiA6IFBBRERSX0JJVFMp IiwgYnV0IG5vdCBjaGFuZ2VkIHRvICJiaXRzIDw9IDMyIgo+Cj5WMzoKPiBBZGQgbW9yZSBjb21t aXQgbG9nCj4gQWRkIG1vcmUgY29tbWVudHMKPiBBZGQgYmFjayBwYW5pYyBpZiBmYWlsZWQgdG8g YWxsb2NhdGUgYmFuazAgdW5kZXIgNEdCIGZvciAzMi1iaXQgZG9tYWluLgo+Cj5WMjoKPiBSZW1v dmUgdGhlIGJvb3RhcmdzIGRvbTBfbG93bWVtIGludHJvZHVjZWQgaW4gVjEuCj4gRm9sbG93aW5n ICJodHRwczovL2xpc3RzLnhlbnByb2plY3Qub3JnL2FyY2hpdmVzL2h0bWwveGVuLWRldmVsLzIw MTYtMDkvbXNnMDE0NTkuaHRtbCIKPiB0byBhbGxvY2F0ZSBhcyBtdWNoIGFzIHBvc3NpYmxlIGxv d21lbS4KPgo+IHhlbi9hcmNoL2FybS9kb21haW5fYnVpbGQuYyB8IDMzICsrKysrKysrKysrKysr KysrKysrKystLS0tLS0tLS0tLQo+IDEgZmlsZSBjaGFuZ2VkLCAyMiBpbnNlcnRpb25zKCspLCAx MSBkZWxldGlvbnMoLSkKPgo+ZGlmZiAtLWdpdCBhL3hlbi9hcmNoL2FybS9kb21haW5fYnVpbGQu YyBiL3hlbi9hcmNoL2FybS9kb21haW5fYnVpbGQuYwo+aW5kZXggMzVhYjA4ZC4uNmI1YWM4ZCAx MDA2NDQKPi0tLSBhL3hlbi9hcmNoL2FybS9kb21haW5fYnVpbGQuYwo+KysrIGIveGVuL2FyY2gv YXJtL2RvbWFpbl9idWlsZC5jCj5AQCAtMTk1LDkgKzE5NSw5IEBAIGZhaWw6Cj4gICogICAgYmFu ay4gUGFydGx5IHRoaXMgaXMganVzdCBlYXNpZXIgZm9yIHVzIHRvIGRlYWwgd2l0aCwgYnV0IGFs c28KPiAgKiAgICB0aGUgcmFtZGlzayBhbmQgRFRCIG11c3QgYmUgcGxhY2VkIHdpdGhpbiBhIGNl cnRhaW4gcHJveGltaXR5IG9mCj4gICogICAgdGhlIGtlcm5lbCB3aXRoaW4gUkFNLgo+LSAqIDMu IEZvciAzMi1iaXQgZG9tMCB3ZSB3YW50IHRvIHBsYWNlIGFzIG11Y2ggb2YgdGhlIFJBTSBhcyB3 ZQo+LSAqICAgIHJlYXNvbmFibHkgY2FuIGJlbG93IDRHQiwgc28gdGhhdCBpdCBjYW4gYmUgdXNl ZCBieSBub24tTFBBRQo+LSAqICAgIGVuYWJsZWQga2VybmVscy4KPisgKiAzLiBGb3IgZG9tMCB3 ZSB3YW50IHRvIHBsYWNlIGFzIG11Y2ggb2YgdGhlIFJBTSBhcyB3ZSByZWFzb25hYmx5IGNhbgo+ KyAqICAgIGJlbG93IDRHQiwgc28gdGhhdCBpdCBjYW4gYmUgdXNlZCBieSBub24tTFBBRSBlbmFi bGVkIGtlcm5lbHMgKDMyLWJpdCkKPisgKiAgICBvciB3aGVuIGEgZGV2aWNlIGFzc2lnbmVkIHRv IGRvbTAgY2FuIG9ubHkgZG8gMzItYml0IERNQSBhY2Nlc3MuCj4gICogNC4gRm9yIDMyLWJpdCBk b20wIHRoZSBrZXJuZWwgbXVzdCBiZSBsb2NhdGVkIGJlbG93IDRHQi4KPiAgKiA1LiBXZSB3YW50 IHRvIGhhdmUgYSBmZXcgbGFyZ2VycyBiYW5rcyByYXRoZXIgdGhhbiBtYW55IHNtYWxsZXIgb25l cy4KPiAgKgo+QEAgLTIzMCw3ICsyMzAsOCBAQCBmYWlsOgo+ICAqIHdlIGdpdmUgdXAuCj4gICoK PiAgKiBGb3IgMzItYml0IGRvbWFpbiB3ZSByZXF1aXJlIHRoYXQgdGhlIGluaXRpYWwgYWxsb2Nh dGlvbiBmb3IgdGhlCj4tICogZmlyc3QgYmFuayBpcyB1bmRlciA0Ry4gVGhlbiBmb3IgdGhlIHN1 YnNlcXVlbnQgYWxsb2NhdGlvbnMgd2UKPisgKiBmaXJzdCBiYW5rIGlzIHVuZGVyIDRHLiBGb3Ig NjQtYml0IGRvbWFpbiwgdGhlIGZpcnN0IGJhbmsgaXMgcHJlZmVycmVkCj4rICogdG8gYmUgYWxs b2NhdGVkIHVuZGVyIDRHLiBUaGVuIGZvciB0aGUgc3Vic2VxdWVudCBhbGxvY2F0aW9ucyB3ZQo+ ICAqIGluaXRpYWxseSBhbGxvY2F0ZSBtZW1vcnkgb25seSBmcm9tIGJlbG93IDRHQi4gT25jZSB0 aGF0IHJ1bnMgb3V0Cj4gICogKGFzIGRlc2NyaWJlZCBhYm92ZSkgd2UgYWxsb3cgaGlnaGVyIGFs bG9jYXRpb25zIGFuZCBjb250aW51ZSB1bnRpbAo+ICAqIHRoYXQgcnVucyBvdXQgKG9yIHdlIGhh dmUgYWxsb2NhdGVkIHN1ZmZpY2llbnQgZG9tMCBtZW1vcnkpLgo+QEAgLTI0NCw3ICsyNDUsNyBA QCBzdGF0aWMgdm9pZCBhbGxvY2F0ZV9tZW1vcnkoc3RydWN0IGRvbWFpbiAqZCwgc3RydWN0IGtl cm5lbF9pbmZvICpraW5mbykKPiAgICAgdW5zaWduZWQgaW50IG9yZGVyID0gZ2V0XzExX2FsbG9j YXRpb25fc2l6ZShraW5mby0+dW5hc3NpZ25lZF9tZW0pOwo+ICAgICBpbnQgaTsKPiAKPi0gICAg Ym9vbF90IGxvd21lbSA9IGlzXzMyYml0X2RvbWFpbihkKTsKPisgICAgYm9vbF90IGxvd21lbSA9 IHRydWU7Cj4gICAgIHVuc2lnbmVkIGludCBiaXRzOwo+IAo+ICAgICAvKgo+QEAgLTI2OSwyMCAr MjcwLDMwIEBAIHN0YXRpYyB2b2lkIGFsbG9jYXRlX21lbW9yeShzdHJ1Y3QgZG9tYWluICpkLCBz dHJ1Y3Qga2VybmVsX2luZm8gKmtpbmZvKQo+ICAgICAgICAgewo+ICAgICAgICAgICAgIHBnID0g YWxsb2NfZG9taGVhcF9wYWdlcyhkLCBvcmRlciwgTUVNRl9iaXRzKGJpdHMpKTsKPiAgICAgICAg ICAgICBpZiAoIHBnICE9IE5VTEwgKQo+KyAgICAgICAgICAgIHsKPisgICAgICAgICAgICAgICAg aWYgKCAhaW5zZXJ0XzExX2JhbmsoZCwga2luZm8sIHBnLCBvcmRlcikgKQo+KyAgICAgICAgICAg ICAgICAgICAgQlVHKCk7IC8qIENhbm5vdCBmYWlsIGZvciBmaXJzdCBiYW5rICovCj4rCj4gICAg ICAgICAgICAgICAgIGdvdG8gZ290X2JhbmswOwo+KyAgICAgICAgICAgIH0KPiAgICAgICAgIH0K PiAgICAgICAgIG9yZGVyLS07Cj4gICAgIH0KPiAKPi0gICAgcGFuaWMoIlVuYWJsZSB0byBhbGxv Y2F0ZSBmaXJzdCBtZW1vcnkgYmFuayIpOwo+LQo+LSBnb3RfYmFuazA6Cj4rICAgIC8qIEZhaWxl ZCB0byBhbGxvY2F0ZSBiYW5rMCB1bmRlciA0R0IgKi8KPisgICAgaWYgKCBpc18zMmJpdF9kb21h aW4oZCkgKQo+KyAgICAgICAgcGFuaWMoIlVuYWJsZSB0byBhbGxvY2F0ZSBmaXJzdCBtZW1vcnkg YmFuay4iKTsKPiAKPi0gICAgaWYgKCAhaW5zZXJ0XzExX2JhbmsoZCwga2luZm8sIHBnLCBvcmRl cikgKQo+LSAgICAgICAgQlVHKCk7IC8qIENhbm5vdCBmYWlsIGZvciBmaXJzdCBiYW5rICovCj4r ICAgIC8qIFRyeSB0byBhbGxvY2F0ZSBtZW1vcnkgZnJvbSBhYm92ZSA0R0IgKi8KPisgICAgcHJp bnRrKFhFTkxPR19JTkZPICJObyBiYW5rIGhhcyBiZWVuIGFsbG9jYXRlZCBiZWxvdyA0R0IuXG4i KTsKPisgICAgbG93bWVtID0gZmFsc2U7Cj4gCj4tICAgIC8qIE5vdyBhbGxvY2F0ZSBtb3JlIG1l bW9yeSBhbmQgZmlsbCBpbiBhZGRpdGlvbmFsIGJhbmtzICovCj4rIGdvdF9iYW5rMDoKPiAKPisg ICAgLyoKPisgICAgICogSWYgd2UgZmFpbGVkIHRvIGFsbG9jYXRlIGJhbmswIHVuZGVyIDRHQiwg Y29udGludWUgYWxsb2NhdGluZwo+KyAgICAgKiBtZW1vcnkgZnJvbSBhYm92ZSA0R0IgYW5kIGZp bGwgaW4gYmFua3MuCj4rICAgICAqLwo+ICAgICBvcmRlciA9IGdldF8xMV9hbGxvY2F0aW9uX3Np emUoa2luZm8tPnVuYXNzaWduZWRfbWVtKTsKPiAgICAgd2hpbGUgKCBraW5mby0+dW5hc3NpZ25l ZF9tZW0gJiYga2luZm8tPm1lbS5ucl9iYW5rcyA8IE5SX01FTV9CQU5LUyApCj4gICAgIHsKPi0t IAo+Mi42LjYKPgoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczov L2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==