On 1/21/2021 12:41 PM, Borislav Petkov wrote:
On Thu, Jan 21, 2021 at 12:16:23PM -0800, Yu, Yu-cheng wrote:It clears _PAGE_DIRTY and sets _PAGE_COW. That is, if (pte.pte & _PAGE_DIRTY) { pte.pte &= ~_PAGE_DIRTY; pte.pte |= _PAGE_COW; } So, shifting makes resulting code more efficient.Efficient for what? Is this a hot path? If not, I'd take readable code any day of the week.
Ok, I will change it to the more readable code as stated earlier. -- Yu-cheng
