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xen
stdvga-cache.patch
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File stdvga-cache.patch of Package xen
Index: xen-4.9.0-testing/xen/arch/x86/hvm/stdvga.c =================================================================== --- xen-4.9.0-testing.orig/xen/arch/x86/hvm/stdvga.c +++ xen-4.9.0-testing/xen/arch/x86/hvm/stdvga.c @@ -166,7 +166,10 @@ static int stdvga_outb(uint64_t addr, ui /* When in standard vga mode, emulate here all writes to the vram buffer * so we can immediately satisfy reads without waiting for qemu. */ - s->stdvga = (s->sr[7] == 0x00); + s->stdvga = + (s->sr[7] == 0x00) && /* standard vga mode */ + (s->gr[6] == 0x05); /* misc graphics register w/ MemoryMapSelect=1 + * 0xa0000-0xaffff (64k region), AlphaDis=1 */ if ( !prev_stdvga && s->stdvga ) {
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