In pure AMP * mode this needs to be followed by a synchronization w/ the device * before reading VIRTIO_MMIO_QUEUE_NUM_MAX */ virtio_mmio_write32(vdev, VIRTIO_MMIO_QUEUE_SEL, idx); maxq = virtio_mmio_read32(vdev, VIRTIO_MMIO_QUEUE_NUM_MAX);...
Given that the purpose of write-combining buffers is to stay open long enough to combine writes, there will always be a tension between low latency and high utilization. (UC writes have no such tension -- the implementation going to try to execute them as fast as...
be setting status to 0. */ BUG_ON(status == 0); writel(status, vm_dev->base + VIRTIO_MMIO_STATUS); } static void vm_reset(struct virtio_device *vdev) { struct virtio_mmio_device *vm_dev = to_virtio_mmio_device(vdev); /* 0 status means a reset. */ writel(0, vm_...
typedef struct { UINT64 GpaAddress; // GPA address of the memory access UINT8 Direction; // Read or write UINT8 AccessSize; // 1, 2, 4, or 8 bytes union { UINT64 Value; // Input value (for write), output value (for read) UINT64 GpaAddress2; // GPA address of the second in...
switch ((size | (int)addr) & 7) {case 1:case 3:case 5:case 7:io_writex(env, full, mmu_idx, val_le, addr, ra, MO_UB);val_le >>= 8;size -= 1;addr += 1;break;case 2:case 6:io_writex(env, full, mmu_idx, val_le, addr, ra, MO_LEUW);val_le >>= 16;size -...
gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); /* Is it a read fault? */ error_code = (exit_qualification & EPT_VIOLATION_ACC_READ) ? PFERR_USER_MASK : 0; /* Is it a write fault? */ error_code |= (exit_qualification & EPT_VIOLATION_ACC_WRITE) ...
18 FB_CLEAR_CTRL: The processor supports read and write to the IA32_MCU_OPT_CTRL MSR (MSR 123H) and to the FB_CLEAR_DIS bit in that MSR (bit position 3). On such processors, the FB_CLEAR_DIS bit can be set to cause the VERW instruction to skip the ...
8-42 PCD Write Configuration 可将不同参数分配给 PPO 的 PCD 3 到 PCD 10(PCD 的数目 取决于 PPO 类型).PCD 3 到 10 的值将作为数据值写入所选 参数. 选项: 功能: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [...
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A command line utility to read/write physical memory on Windows via vulnerable asmmap64 or inpoutx64 driver. Administrative privileges is required to install the kernel driver. Thanks @Hyatice and @ciphray for helps. ⚠ Warning ⚠ Reading or writing some locations of physical memory can caus...