diff mbox series

[v2,01/19] block/nvme: Correct minimum device page size

Message ID 20201026105504.4023620-2-philmd@redhat.com
State New, archived
Headers show
Series util/vfio-helpers: Allow using multiple MSIX IRQs | expand

Commit Message

Philippe Mathieu-Daudé Oct. 26, 2020, 10:54 a.m. UTC
While trying to simplify the code using a macro, we forgot
the 12-bit shift... Correct that.

Fixes: fad1eb68862 ("block/nvme: Use register definitions from 'block/nvme.h'")
Reported-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 block/nvme.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Auger Eric Oct. 26, 2020, 5:57 p.m. UTC | #1
Hi Philippe,

On 10/26/20 11:54 AM, Philippe Mathieu-Daudé wrote:
> While trying to simplify the code using a macro, we forgot
> the 12-bit shift... Correct that.
> 
> Fixes: fad1eb68862 ("block/nvme: Use register definitions from 'block/nvme.h'")
> Reported-by: Eric Auger <eric.auger@redhat.com>
> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---

>  block/nvme.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/block/nvme.c b/block/nvme.c
> index b48f6f25881..029694975b9 100644
> --- a/block/nvme.c
> +++ b/block/nvme.c
> @@ -724,7 +724,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
>          goto out;
>      }
>  
> -    s->page_size = MAX(4096, 1 << NVME_CAP_MPSMIN(cap));
> +    s->page_size = MAX(4096, 1u << (12 + NVME_CAP_MPSMIN(cap)));
nit the MAX(4096,) could have been removed

Reviewed-by: Eric Auger <eric.auger@redhat.com>

Thanks

Eric
>      s->doorbell_scale = (4 << NVME_CAP_DSTRD(cap)) / sizeof(uint32_t);
>      bs->bl.opt_mem_alignment = s->page_size;
>      timeout_ms = MIN(500 * NVME_CAP_TO(cap), 30000);
>
diff mbox series

Patch

diff --git a/block/nvme.c b/block/nvme.c
index b48f6f25881..029694975b9 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -724,7 +724,7 @@  static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
         goto out;
     }
 
-    s->page_size = MAX(4096, 1 << NVME_CAP_MPSMIN(cap));
+    s->page_size = MAX(4096, 1u << (12 + NVME_CAP_MPSMIN(cap)));
     s->doorbell_scale = (4 << NVME_CAP_DSTRD(cap)) / sizeof(uint32_t);
     bs->bl.opt_mem_alignment = s->page_size;
     timeout_ms = MIN(500 * NVME_CAP_TO(cap), 30000);