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Commit 520e18a5 authored by James Morse's avatar James Morse Committed by Rafael J. Wysocki
Browse files

ACPI / APEI: Remove ghes_ioremap_area 



Now that nothing is using the ghes_ioremap_area pages, rip them out.

Signed-off-by: default avatarJames Morse <james.morse@arm.com>
Reviewed-by: default avatarBorislav Petkov <bp@suse.de>
Tested-by: default avatarTyler Baicar <tbaicar@codeaurora.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: All applicable <stable@vger.kernel.org>
parent 4f89fa28

drivers/acpi/apei/ghes.c

+2 −37
Original line number Diff line number Diff line
@@ -114,19 +114,7 @@ static DEFINE_MUTEX(ghes_list_mutex); 
 * from BIOS to Linux can be determined only in NMI, IRQ or timer

 * handler, but general ioremap can not be used in atomic context, so

 * the fixmap is used instead.

 */



/*

 * Two virtual pages are used, one for IRQ/PROCESS context, the other for

 * NMI context (optionally).

 */

#define GHES_IOREMAP_PAGES           2

#define GHES_IOREMAP_IRQ_PAGE(base)	(base)

#define GHES_IOREMAP_NMI_PAGE(base)	((base) + PAGE_SIZE)



/* virtual memory area for atomic ioremap */

static struct vm_struct *ghes_ioremap_area;

/*

 *

 * These 2 spinlocks are used to prevent the fixmap entries from being used

 * simultaneously.

 */
@@ -141,23 +129,6 @@ static atomic_t ghes_estatus_cache_alloced; 


static int ghes_panic_timeout __read_mostly = 30;



static int ghes_ioremap_init(void)

{

	ghes_ioremap_area = __get_vm_area(PAGE_SIZE * GHES_IOREMAP_PAGES,

		VM_IOREMAP, VMALLOC_START, VMALLOC_END);

	if (!ghes_ioremap_area) {

		pr_err(GHES_PFX "Failed to allocate virtual memory area for atomic ioremap.\n");

		return -ENOMEM;

	}



	return 0;

}



static void ghes_ioremap_exit(void)

{

	free_vm_area(ghes_ioremap_area);

}



static void __iomem *ghes_ioremap_pfn_nmi(u64 pfn)

{

	phys_addr_t paddr;
@@ -1247,13 +1218,9 @@ static int __init ghes_init(void) 


	ghes_nmi_init_cxt();



	rc = ghes_ioremap_init();

	if (rc)

		goto err;



	rc = ghes_estatus_pool_init();

	if (rc)

		goto err_ioremap_exit;

		goto err;



	rc = ghes_estatus_pool_expand(GHES_ESTATUS_CACHE_AVG_SIZE *

				      GHES_ESTATUS_CACHE_ALLOCED_MAX);
@@ -1277,8 +1244,6 @@ static int __init ghes_init(void) 
	return 0;

err_pool_exit:

	ghes_estatus_pool_exit();

err_ioremap_exit:

	ghes_ioremap_exit();

err:

	return rc;

}