From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Date: Mon, 25 May 2009 11:25:09 +0000
Subject: Re: [PATCH] qemu-kvm: Flush icache after dma operations for ia64
Message-Id: <4A1A8015.8080908@redhat.com>
List-Id: <kvm-ia64.vger.kernel.org>
References: <706158FABBBA044BAD4FE898A02E4BC236B1935F@pdsmsx503.ccr.corp.intel.com>
In-Reply-To: <706158FABBBA044BAD4FE898A02E4BC236B1935F@pdsmsx503.ccr.corp.intel.com>
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To: kvm-ia64@vger.kernel.org

Jes Sorensen wrote:
>  
> +/*
> + * Is this correct for PPC?
> + */
> +#define dma_flush_range(start, end)                  \
> +    do { (void) (start); (void) (end); } while (0)
>   

Correct or not, should be a function/

> +#define dma_flush_range(start, end)              \
> +    do { (void) (start); (void) (end); } while (0)
>  
>   
Another function.

> @@ -24,6 +24,7 @@
>  #include "qemu-common.h"
>  #include "host-utils.h"
>  #include <assert.h>
> +#include "cache-utils.h"
>  
>  void pstrcpy(char *buf, int buf_size, const char *str)
>  {
> @@ -176,6 +177,10 @@
>          if (copy > qiov->iov[i].iov_len)
>              copy = qiov->iov[i].iov_len;
>          memcpy(qiov->iov[i].iov_base, p, copy);
> +
> +        dma_flush_range((unsigned long)qiov->iov[i].iov_base,
> +                        (unsigned long)qiov->iov[i].iov_base + copy);
> +
>   

Bogus.

>  static AIOPool dma_aio_pool;
>  
> @@ -149,6 +150,17 @@
>      dbs->bh = NULL;
>      qemu_iovec_init(&dbs->iov, sg->nsg);
>      dma_bdrv_cb(dbs, 0);
> +
> +    if (!is_write) {
> +        int i;
> +        QEMUIOVector *qiov;
> +        qiov = &dbs->iov;
> +        for (i = 0; i < qiov->niov; ++i) {
> +            dma_flush_range((unsigned long)qiov->iov[i].iov_base,
> +                (unsigned long)(qiov->iov[i].iov_base + qiov->iov[i].iov_len));
> +	}
> +    }
> +
>   

cpu_physical_memory_unmap() will do this for you...

>  
>  #if !defined(TARGET_IA64)
>  #include "tcg.h"
> @@ -3385,6 +3386,8 @@
>  void cpu_physical_memory_unmap(void *buffer, target_phys_addr_t len,
>                                 int is_write, target_phys_addr_t access_len)
>  {
> +    unsigned long flush_len = (unsigned long)access_len;
> +
>      if (buffer != bounce.buffer) {
>          if (is_write) {
>              ram_addr_t addr1 = qemu_ram_addr_from_host(buffer);
> @@ -3402,7 +3405,9 @@
>                  }
>                  addr1 += l;
>                  access_len -= l;
> -            }
> +	    }
> +	    dma_flush_range((unsigned long)buffer,
> +			    (unsigned long)buffer + flush_len);
>          }
>   

... here.

-- 
error compiling committee.c: too many arguments to function