Hi Julien,
Julien Grall <jul...@xen.org> writes: > Hi Volodymyr, > > On 19/09/2023 12:28, Volodymyr Babchuk wrote: >> There is no need to invalidate cache entry because we just wrote into a >> memory region. Writing itself guarantees that cache entry is valid. > > The goal of invalidate is to remove the line from the cache. So I > don't quite understand the reasoning here. > Well, I may be wrong, but what is the goal in removing line from the cache? As I see this, we want to be sure that ITS sees data written in the memory, so we should flush a cache line. But why do we need to remove it from CPU's cache? -- WBR, Volodymyr
