linux-kernel - Re: [PATCH RFC 5/7] Revert "x86: use typedef for SetupData struct"

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Date:   Thu, 9 Feb 2023 02:41:03 -0500
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     qemu-devel@...gnu.org, "Jason A. Donenfeld" <Jason@...c4.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Dov Murik <dovmurik@...ux.ibm.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Daniel P . Berrangé <berrange@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Richard Henderson <richard.henderson@...aro.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Philippe Mathieu-Daudé <philmd@...aro.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Borislav Petkov <bp@...en8.de>,
        Eric Biggers <ebiggers@...nel.org>,
        Eduardo Habkost <eduardo@...kost.net>,
        Marcel Apfelbaum <marcel.apfelbaum@...il.com>
Subject: Re: [PATCH RFC 5/7] Revert "x86: use typedef for SetupData struct"

On Wed, Feb 08, 2023 at 04:12:51PM -0500, Michael S. Tsirkin wrote:
> This reverts commit eebb38a5633a77f5fa79d6486d5b2fcf8fbe3c07.
> 
> Fixes: eebb38a563 ("x86: use typedef for SetupData struct")
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>


This one was actually good, I reverted so other reverts are clean.
Jason I would appreciate it if you can rebase this on top
of the revert.


> ---
>  hw/i386/x86.c | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/i386/x86.c b/hw/i386/x86.c
> index 32f37ab7c2..76b12108b4 100644
> --- a/hw/i386/x86.c
> +++ b/hw/i386/x86.c
> @@ -657,12 +657,12 @@ DeviceState *ioapic_init_secondary(GSIState *gsi_state)
>      return dev;
>  }
>  
> -typedef struct SetupData {
> +struct setup_data {
>      uint64_t next;
>      uint32_t type;
>      uint32_t len;
>      uint8_t data[];
> -} __attribute__((packed)) SetupData;
> +} __attribute__((packed));
>  
>  
>  /*
> @@ -803,7 +803,7 @@ void x86_load_linux(X86MachineState *x86ms,
>      FILE *f;
>      char *vmode;
>      MachineState *machine = MACHINE(x86ms);
> -    SetupData *setup_data;
> +    struct setup_data *setup_data;
>      const char *kernel_filename = machine->kernel_filename;
>      const char *initrd_filename = machine->initrd_filename;
>      const char *dtb_filename = machine->dtb;
> @@ -1086,11 +1086,11 @@ void x86_load_linux(X86MachineState *x86ms,
>          }
>  
>          setup_data_offset = QEMU_ALIGN_UP(kernel_size, 16);
> -        kernel_size = setup_data_offset + sizeof(SetupData) + dtb_size;
> +        kernel_size = setup_data_offset + sizeof(struct setup_data) + dtb_size;
>          kernel = g_realloc(kernel, kernel_size);
>  
>  
> -        setup_data = (SetupData *)(kernel + setup_data_offset);
> +        setup_data = (struct setup_data *)(kernel + setup_data_offset);
>          setup_data->next = cpu_to_le64(first_setup_data);
>          first_setup_data = prot_addr + setup_data_offset;
>          setup_data->type = cpu_to_le32(SETUP_DTB);
> @@ -1101,9 +1101,9 @@ void x86_load_linux(X86MachineState *x86ms,
>  
>      if (!legacy_no_rng_seed) {
>          setup_data_offset = QEMU_ALIGN_UP(kernel_size, 16);
> -        kernel_size = setup_data_offset + sizeof(SetupData) + RNG_SEED_LENGTH;
> +        kernel_size = setup_data_offset + sizeof(struct setup_data) + RNG_SEED_LENGTH;
>          kernel = g_realloc(kernel, kernel_size);
> -        setup_data = (SetupData *)(kernel + setup_data_offset);
> +        setup_data = (struct setup_data *)(kernel + setup_data_offset);
>          setup_data->next = cpu_to_le64(first_setup_data);
>          first_setup_data = prot_addr + setup_data_offset;
>          setup_data->type = cpu_to_le32(SETUP_RNG_SEED);
> -- 
> MST
>