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| author | Damien Zammit <damien@zamaudio.com> | 2024-01-30 08:04:15 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-01-30 19:25:30 +0100 |
| commit | 366954d50be00d085d44a8c461a80f2d0b663224 (patch) | |
| tree | bf1d49c5956030035aba79347493b439b0c26626 /i386/i386at/boothdr.S | |
| parent | 6bca5c2873ef4cfccd8d2ebeedad29c9d5a6ec7f (diff) | |
| download | gnumach-366954d50be00d085d44a8c461a80f2d0b663224.tar.gz gnumach-366954d50be00d085d44a8c461a80f2d0b663224.tar.bz2 gnumach-366954d50be00d085d44a8c461a80f2d0b663224.zip | |
apic: Set up LAPICs in xAPIC mode
Clear flag in msr for xAPIC mode.
Message-ID: <20240130080405.1304381-1-damien@zamaudio.com>
Diffstat (limited to 'i386/i386at/boothdr.S')
| -rw-r--r-- | i386/i386at/boothdr.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/i386/i386at/boothdr.S b/i386/i386at/boothdr.S index 6696d966..daaf57db 100644 --- a/i386/i386at/boothdr.S +++ b/i386/i386at/boothdr.S @@ -67,13 +67,14 @@ boot_entry: movl $solid_intstack+INTSTACK_SIZE-4, %esp andl $0xfffffff0,%esp - /* Enable local apic */ + /* Enable local apic in xAPIC mode */ xorl %eax, %eax xorl %edx, %edx movl $APIC_MSR, %ecx rdmsr orl $APIC_MSR_ENABLE, %eax orl $APIC_MSR_BSP, %eax + andl $(~APIC_MSR_X2APIC), %eax movl $APIC_MSR, %ecx wrmsr |