Displaying 3 results from an estimated 3 matches for "purge_tlb_end".
2019 Mar 12
0
[RFC PATCH V2 0/5] vhost: accelerate metadata access through vmap()
...at I mean by there not really being
> a double hit.
Ok I wasn't sure it was clear there was a double (profiling) hit on
that function.
void flush_kernel_dcache_page_addr(void *addr)
{
unsigned long flags;
flush_kernel_dcache_page_asm(addr);
purge_tlb_start(flags);
pdtlb_kernel(addr);
purge_tlb_end(flags);
}
#define purge_tlb_start(flags) spin_lock_irqsave(&pa_tlb_lock, flags)
#define purge_tlb_end(flags) spin_unlock_irqrestore(&pa_tlb_lock, flags)
You got a system-wide spinlock in there that won't just go away the
second time. So it's a bit more than a tightly pipelined &qu...
2019 Mar 12
9
[RFC PATCH V2 0/5] vhost: accelerate metadata access through vmap()
On Tue, Mar 12, 2019 at 10:59:09AM +0800, Jason Wang wrote:
>
> On 2019/3/12 ??2:14, David Miller wrote:
> > From: "Michael S. Tsirkin" <mst at redhat.com>
> > Date: Mon, 11 Mar 2019 09:59:28 -0400
> >
> > > On Mon, Mar 11, 2019 at 03:13:17PM +0800, Jason Wang wrote:
> > > > On 2019/3/8 ??10:12, Christoph Hellwig wrote:
> > >
2019 Mar 12
9
[RFC PATCH V2 0/5] vhost: accelerate metadata access through vmap()
On Tue, Mar 12, 2019 at 10:59:09AM +0800, Jason Wang wrote:
>
> On 2019/3/12 ??2:14, David Miller wrote:
> > From: "Michael S. Tsirkin" <mst at redhat.com>
> > Date: Mon, 11 Mar 2019 09:59:28 -0400
> >
> > > On Mon, Mar 11, 2019 at 03:13:17PM +0800, Jason Wang wrote:
> > > > On 2019/3/8 ??10:12, Christoph Hellwig wrote:
> > >