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From: Jan Beulich <jbeulich@suse.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Xen-devel <xen-devel@lists.xenproject.org>,
	"Wei Liu" <wl@xen.org>, "Roger Pau Monné" <roger.pau@citrix.com>
Subject: Re: [Xen-devel] [PATCH 4/4] x86/svm: Use named (bit)fields for task switch exit info
Date: Thu, 5 Dec 2019 10:05:55 +0100
Message-ID: <50acce40-7a70-3dad-af18-8320b809fcd3@suse.com> (raw)
In-Reply-To: <d4fc4cfe-b4d0-5c26-12dc-df1631f8d49b@citrix.com>

On 04.12.2019 21:04, Andrew Cooper wrote:
> Net delta is:
> 
> diff --git a/xen/include/asm-x86/hvm/svm/vmcb.h
> b/xen/include/asm-x86/hvm/svm/vmcb.h
> index 02b5e86b49..864618ccf9 100644
> --- a/xen/include/asm-x86/hvm/svm/vmcb.h
> +++ b/xen/include/asm-x86/hvm/svm/vmcb.h
> @@ -419,17 +419,15 @@ struct vmcb_struct {
>      u64 interrupt_shadow;       /* offset 0x68 */
>      u64 exitcode;               /* offset 0x70 */
>      union {
> -        u64 exitinfo1;          /* offset 0x78 */
> +        struct {
> +            uint64_t exitinfo1; /* offset 0x78 */
> +            uint64_t exitinfo2; /* offset 0x80 */
> +        };
>          union {
>              struct {
>                  uint16_t sel;
> -            } task_switch;
> -        } e1;
> -    };
> -    union {
> -        u64 exitinfo2;          /* offset 0x80 */
> -        union {
> -            struct {
> +                uint64_t :48;
> +
>                  uint32_t ec;
>                  uint32_t :4;
>                  bool     iret:1;
> @@ -440,7 +438,7 @@ struct vmcb_struct {
>                  uint32_t :3;
>                  bool     rf:1;
>              } task_switch;
> -        } e2;
> +        } ei;
>      };
>      intinfo_t exitintinfo;      /* offset 0x88 */
>      u64 _np_enable;             /* offset 0x90 - cleanbit 4 */
> 
> LGTM.

And the result then
Reviewed-by: Jan Beulich <jbeulich@suse.com>

Jan

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Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-04  9:43 [Xen-devel] [PATCH 0/4] x86/svm: (Post TASK_SWITCH) cleanup Andrew Cooper
2019-12-04  9:43 ` [Xen-devel] [PATCH 1/4] x86/svm: Clean up construct_vmcb() Andrew Cooper
2019-12-04 10:06   ` Jan Beulich
2019-12-04 19:21     ` Andrew Cooper
2019-12-04  9:43 ` [Xen-devel] [PATCH 2/4] x86/svm: Don't shadow variables in svm_vmexit_handler() Andrew Cooper
2019-12-04 10:10   ` Jan Beulich
2019-12-04  9:43 ` [Xen-devel] [PATCH 3/4] x86/svm: Clean up intinfo_t variables Andrew Cooper
2019-12-04 10:19   ` Jan Beulich
2019-12-04 19:22     ` Andrew Cooper
2019-12-04 19:38   ` Andrew Cooper
2019-12-05  9:11     ` Jan Beulich
2019-12-05 12:33   ` Andrew Cooper
2019-12-04  9:43 ` [Xen-devel] [PATCH 4/4] x86/svm: Use named (bit)fields for task switch exit info Andrew Cooper
2019-12-04 10:24   ` Jan Beulich
2019-12-04 20:04     ` Andrew Cooper
2019-12-05  9:05       ` Jan Beulich [this message]
2019-12-05 10:51 ` [Xen-devel] [PATCH 5/4] x86/svm: Minor cleanup to start_svm() Andrew Cooper
2019-12-05 10:53   ` Jan Beulich

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