Date: Tue, 9 Aug 2005 00:07:48 +0200 From: Juergen Lock <nox@jelal.kn-bremen.de> To: qemu-devel@nongnu.org, freebsd-emulation@freebsd.org Subject: new kqemu win98 hack affects FreeBSD Message-ID: <20050808225748.GA86305@saturn.kn-bremen.de>
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Hi! I got a report that kqemu doesnt speed up FreeBSD guests anymore, and found out that the win98 hack stops kqemu from being used. If i disable it and add this to cpu-exec.c, Index: cpu-exec.c @@ -232,6 +232,13 @@ #ifdef USE_KQEMU if (kqemu_is_ok(env) && env->interrupt_request == 0) { int ret; +#if 1 + static uint32_t lastldtlimit = 0; + if (env->ldt.limit != lastldtlimit) { + lastldtlimit = env->ldt.limit; + printf("new ldt limit 0x%x\n", (int)lastldtlimit); + } +#endif env->eflags = env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK); ret = kqemu_cpu_exec(env); /* put eflags in CPU temporary format */ then a short run with FreeSBIE gives this: new ldt limit 0xffff new ldt limit 0xfff new ldt limit 0x1fff new ldt limit 0xfff new ldt limit 0x1fff new ldt limit 0xfff new ldt limit 0x1fff new ldt limit 0x87 new ldt limit 0x1fff new ldt limit 0x87 new ldt limit 0x1fff new ldt limit 0xfff new ldt limit 0x2fff new ldt limit 0x87 new ldt limit 0xfff new ldt limit 0x87 new ldt limit 0xfff new ldt limit 0x87 new ldt limit 0xfff So maybe we need a new switch -win98-hack... :) Juergen
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