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SubjectRe: [PATCH] x86/Hyper-V: Fix definition HV_MAX_FLUSH_REP_COUNT
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On 22/02/19 11:48, lantianyu1986@gmail.com wrote:
> From: Lan Tianyu <Tianyu.Lan@microsoft.com>
>
> The max flush rep count of HvFlushGuestPhysicalAddressList hypercall
> is equal with how many entries of union hv_gpa_page_range can be populated
> into the input parameter page. The origin code lacks parenthesis around
> PAGE_SIZE - 2 * sizeof(u64). This patch is to fix it.
>
> Cc: <stable@vger.kernel.org>
> Fixs: cc4edae4b9(x86/hyper-v: Add HvFlushGuestAddressList hypercall support)
> Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
> ---
> arch/x86/include/asm/hyperv-tlfs.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
> index 705dafc2d11a..2bdbbbcfa393 100644
> --- a/arch/x86/include/asm/hyperv-tlfs.h
> +++ b/arch/x86/include/asm/hyperv-tlfs.h
> @@ -841,7 +841,7 @@ union hv_gpa_page_range {
> * count is equal with how many entries of union hv_gpa_page_range can
> * be populated into the input parameter page.
> */
> -#define HV_MAX_FLUSH_REP_COUNT (PAGE_SIZE - 2 * sizeof(u64) / \
> +#define HV_MAX_FLUSH_REP_COUNT ((PAGE_SIZE - 2 * sizeof(u64)) / \
> sizeof(union hv_gpa_page_range))
>
> struct hv_guest_mapping_flush_list {
>

Queued for after he merge window, with the fixed "Fixes" tag.

Paolo

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